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  1. Employees

Språkvelger

Norsk

Raghavendra Ramachandra

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Raghavendra Ramachandra

Professor
Department of Information Security and Communication Technology
Faculty of Information Technology and Electrical Engineering

raghavendra.ramachandra@ntnu.no
+4761135458 T512 Topasbygget Kallerud, Gjøvik
ResearchGate Google Scholar
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About

Raghavendra Ramachandra is working as a Professor in Department of Information Security and Communication Technology (IIK)  at NTNU, Gjøvik. 

Research Interests

Biometrics (Verification and Attack Detection), Machine Learning, Deep learning, Image and video analytics, Human Behaviour Anlaysis, Video Surviellance,  Health Biometrics, Smartphone Authentication.

Competencies

  • Biometrics
  • Deep learning
  • Fake Face Generation and Detection
  • Image and Video Processing
  • Machine Learning
  • Morphing Attack Detection
  • Presentation Attack Detection
  • SmartPhone Biometrics

Research

A highly motivated academician with an extensive background in biometrics, image/video processing, deep learning, and image fusion. Strong working background on various biometric modalities, including the face, palmprint, finger vein, iris, and multimodal biometrics. In-depth knowledge of image processing (2D/3D), Deep Learning, machine learning, and their application to human behavior, crowd behavior, and biometric applications. Extensive experience has been gained in developing biometric sensors, such as finger veins and multispectral face devices, as well as different feature extraction algorithms for various biometric modalities. Experience of bringing biometrics to smartphones. Adept works by developing algorithms for spoof and morphing attack detection on biometric (face, finger vein, iris (visible and near-infrared)) systems. Experience in leading and managing national/EU research projects and project acquisition. Worked as a Consultant to the Norwegian Directorate of Immigration (UDI). Supervising/co-supervising Ph.D. and master’s students.

SALT (2022 - 2026) funded by Norwegian Research Council

SALT, (Secure privacy preserving Authentication using faciaL biometrics to proTect your identity) project will develop new algorithms for privacy preserving, presentation/Morphing attack detection techniques on face biometrics.

“OffPAD” - Optimizing balance between high security and usability (2022-2025)

“OffPAD” project will develop cryptographic tools and presentation attack detection techniques for fingerprint biometrics.

Secure Access Control over Wide Area Network (SWAN) (2015-2020)

The SWAN-project will develop innovative technologies and countermeasures to mitigate presentation attacks (also coined as spoofing attacks), which lead to a usable, economic, and privacy-preserving access control platform based on biometrics.

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Prabhu, Anish; Naik, Aparajita; Raut, Sakshi; Vetrekar, Narayan; Ramachandra, Raghavendra; Gad, R.S.. (2025) Employing Non-Destructive Approach of Spectral Imaging to Detect Artificially Degreened Lemon. IEEE Sensors Letters
    Academic article
  • Chatterjee, Ayan; Riegler, Michael; Johnson, Miriam S.; Das, Jishnu; Pahari, Nibedita; Ramachandra, Raghavendra. (2025) Erratum: Author Correction: Exploring online public survey lifestyle datasets with statistical analysis, machine learning and semantic ontology (Scientific reports (2024) 14 1 DOI: 10.1038/s41598-024-74539-6.). Scientific Reports
    Errata
  • Ramachandra, Raghavendra; Vetrekar, Narayan; Patwardhan, Sushrut Dattatraya; Venkatesh, Sushma Krupa; Naik, Gauresh; Gad, R.S.. (2025) PCGattnNet: A 3D Point Cloud Dynamic Graph Attention for Generalizable Face Presentation Attack Detection. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Albaluchi, Yousaf Mohammad Yaqoob; Fu, Biying; Damer, Naser; Ramachandra, Raghavendra; Raja, Kiran. (2025) UAV-based person re-identification: A survey of UAV datasets, approaches, and challenges. Computer Vision and Image Understanding
    Academic article
  • Mondal, Ayan; Shrivastava, Vimal K.; Chatterjee, Ayan; Ramachandra, Raghavendra. (2025) Sb-PiPLU: A Novel Parametric Activation Function for Deep Learning. IEEE Access
    Academic article
  • Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph Günther. (2025) SynMorph: Generating Synthetic Face Morphing Dataset With Mated Samples. IEEE Access
    Academic article
  • Panchananam, Lakshmi Srinivas; Chandaliya, Praveen Kumar; Akhtar, Zahid; Upla, Kishor; Ramachandra, Raghavendra. (2025) WaveletFusion: enhancing plant leaf disease classification with multi-scale feature extraction and explainable AI. Expert Systems With Applications
    Academic article
  • Sharma, Geetanjali; Jaswal, Gaurav; Nigam, Aditya; Ramachandra, Raghavendra. (2025) FISNET: A Learnable Fusion-based Iris Segmentation Network Improving Robustness Across NIR and VIS Modalities. IEEE Access
    Academic article

2024

  • Kabbani, Wassim Hassan; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Radial Distortion in Face Images: Detection and Impact. IEEE conference proceedings IEEE conference proceedings
    Academic anthology/Conference proceedings
  • Singh, Jag Mohan; Ramachandra, Raghavendra. (2024) 3-D Face Morphing Attacks: Generation, Vulnerability and Detection. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Jalab, Hamid A.; Ibrahim, Rabha W.; Ramachandra, Raghavendra; Pal, Umapada. (2024) A Conformable Moments-Based Deep Learning System for Forged Handwriting Detection. IEEE Transactions on Neural Networks and Learning Systems
    Academic article
  • Zhang, Wentian; Liu, Haozhe; Xie, Jinheng; Huang, Yawen; Zhang, Yu; Li, Yuexiang. (2024) Anomaly detection via gating highway connection for retinal fundus images. Pattern Recognition
    Academic article
  • Zhang, Wentian; Liu, Haozhe; Liu, Feng; Ramachandra, Raghavendra. (2024) A uniform representation model for OCT-based fingerprint presentation attack detection and reconstruction. Pattern Recognition
    Academic article
  • Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph Günther. (2024) Generalized Single-Image-Based Morphing Attack Detection Using Deep Representations from Vision Transformer. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Chandaliya, Praveen Kumar; Bylappa Raja, Kiran; Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Synthetic Ethnicity Alteration for Diversifying Face Datasets - Investigating Recognition and Quality. IEEE International Workshop on Information Forensics and Security (WIFS)
    Academic article
  • Liu, Xinwei; Raja, Kiran; Wang, Renfang; Qiu, Hong; Wu, Hucheng; Sun, Dechao. (2024) A Latent Fingerprint in the Wild Database. IEEE Transactions on Information Forensics and Security
    Academic article
  • Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph . (2024) Eye Sclera for Fair Face Image Quality Assessment. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph . (2024) Demographic Variability in Face Image Quality Measures. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Chatterjee, Ayan; Riegler, Michael; Johnson, Miriam S.; Das, Jishnu; Pahari, Nibedita; Ramachandra, Raghavendra. (2024) Exploring online public survey lifestyle datasets with statistical analysis, machine learning and semantic ontology. Scientific Reports
    Academic article
  • Arıcan, Tuğçe; Veldhuis, Raymond Nicolaas Johan; Spreeuwers, Luuk; Bergeron, Loic Kevin; Busch, Christoph ; Jalilian, Ehsaneddin. (2024) A Comparative Study of Cross-Device Finger Vein Recognition Using Classical and Deep Learning Approaches. IET Biometrics
    Academic article
  • Agarwal, Ayush; Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Prasanna, S. R. Mahadeva. (2024) Biometrics in extended reality: a review. Discover Artificial Intelligence
    Academic literature review
  • Li, Hailin; Ramachandra, Raghavendra. (2024) Fingerphoto morphing attack generation using texture descriptors based landmarks. Scientific Reports
    Academic article

2023

  • Ramachandra, Raghavendra; Venkatesh, Sushma; Li, Guoqiang; Raja, Kiran. (2023) Differential Newborn Face Morphing Attack Detection using Wavelet Scatter Network. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
    Academic anthology/Conference proceedings
  • Kong, Zhe; Zhang, Wentian; Liu, Feng; Luo, Wenhan; Liu, Haozhe; Shen, Linlin. (2023) Taming Self-Supervised Learning for Presentation Attack Detection: De-Folding and De-Mixing. IEEE Transactions on Neural Networks and Learning Systems
    Academic article
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Jaswal, Gaurav; Li, Guoqiang. (2023) Vulnerability of Face Morphing Attacks: A Case Study on Lookalike and Identical Twins. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
    Academic anthology/Conference proceedings
  • Das, Soumik; palaiahnakote, Shivakumara; Pal, Umapada; Ramachandra, Raghavendra. (2023) Gaussian Kernels Based Network for Multiple License Plate Number Detection in Day-Night Images. Springer Nature Springer Nature
    Academic anthology/Conference proceedings
  • Reddy, Arvind; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra. (2023) MLSD-GAN - Generating Strong High Quality Face Morphing Attacks using Latent Semantic Disentanglement. IEEE conference proceedings IEEE conference proceedings
    Academic anthology/Conference proceedings
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Gaonkar, Aniketh; Gad, Rajendra. (2023) Towards the Influence of Eyeglasses on the Cross-spectral Periocular Verification: Does Eyeglass Detection Improve Verification Performance?. ACM Publications ACM Publications
    Academic anthology/Conference proceedings
  • Singh, Jag Mohan; Venkatesh, Sushma Krupa; Ramachandra, Raghavendra. (2023) Robust Face Morphing Attack Detection Using Fusion of Multiple Features and Classification Techniques. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph Günther. (2023) Morph-PIPE: Plugging in Identity Prior to Enhance Face Morphing Attack Based on Diffusion Model. NIKT: Norsk IKT-konferanse for forskning og utdanning
    Academic article
  • Busch, Christoph ; Deravi, Farzin; Frings, Dinusha; Kindt, Els; Lessmann, Ralph; Nouak, Alexander. (2023) Facilitating free travel in the Schengen area—A position paper by the European Association for Biometrics. IET Biometrics
    Academic article
  • Ramachandra, Raghavendra; Li, Hailin. (2023) 2023 IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW). IEEE conference proceedings IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW) (2023)
    Academic anthology/Conference proceedings
  • Ramachandra, Raghavendra; Li, Hailin. (2023) Finger-NestNet: Interpretable Fingerphoto Verification on Smartphone using Deep Nested Residual Network . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Gad, R.S.. (2023) Multilevel Fusion of Multispectral Images to Detect the Artificially Ripened Banana. IEEE Sensors Letters
    Academic article
  • Myhrvold, Henning; Zhang, Haoyu; Tapia, Juan; Ramachandra, Raghavendra; Busch, Christoph Günther. (2023) Explainable Visualization for Morphing Attack Detection. NIKT: Norsk IKT-konferanse for forskning og utdanning
    Academic article
  • Singh, Jag Mohan; Ramachandra, Raghavendra. (2023) Deep Composite Face Image Attacks: Generation, Vulnerability and Detection. IEEE Access
    Academic article
  • Montazerian, Arman; Haj Mohammadian Baghban, Mohammad; Ramachandra, Raghavendra; Goutianos, Stergios. (2023) A machine learning approach for assessing the compressive strength of cementitious composites reinforced by graphene derivatives. Construction and Building Materials
    Academic article
  • Tapia, Juan E.; Busch, Christoph Günther; Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2023) Simulating Print/Scan Textures for Morphing Attack Detection. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2023) Face Presentation Attack Detection Using Remote Photoplethysmography Transformer Model. Springer Nature
    Academic chapter/article/Conference paper

2022

  • Shivakumara, Palaiahnakote; Chowdhury, Pinaki Nath; Pal, Umapada; Doermann, David; Ramachandra, Raghavendra; Lu, Tong. (2022) A Knowledge Enforcement Network-Based Approach for Classifying a Photographer's Images. International Journal of Pattern Recognition and Artificial Intelligence
    Academic article
  • Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Sarvaiya, Anjali; Upla, Kishor; Raja, Kiran. (2022) Unsupervised Denoising for Super-Resolution (UDSR) of Real-World Images. IEEE Access
    Academic article
  • Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Nag, Sauradip; Pal, Umapada; Lu, Tong. (2022) An Episodic Learning Network for Text Detection on Human Bodies in Sports Images. IEEE transactions on circuits and systems for video technology (Print)
    Academic article
  • Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben. (2022) Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach. Information Fusion
    Academic article
  • Ramachandra, Raghavendra; Li, Guoqiang. (2022) Multimodality for Reliable Single Image Based Face Morphing Attack Detection. IEEE Access
    Academic article
  • Banerjee, Ayan; Shivakumara, Palaiahnakote; Pal, Umapada; Ramachandra, Raghavendra; Liu, Cheng-Lin. (2022) A comprehensive scheme for tattoo text detection. Pattern Recognition Letters
    Academic article
  • Raja, Kiran; Gupta, Gourav; Venkatesh, Sushma; Ramachandra, Raghavendra; Busch, Christoph. (2022) Towards generalized morphing attack detection by learning residuals. Image and Vision Computing
    Academic article
  • Xu, Ying; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph . (2022) Adversarial Attacks on Face Recognition Systems. Springer
    Chapter
  • Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Lu, Tong; Pal, Umapada; Antonacopoulos, Apostolos. (2022) A New Deep Wavefront Based Model for Text Localization in 3D Video. IEEE transactions on circuits and systems for video technology (Print)
    Academic article
  • Vetrekar, Narayan; Prabhu, Anish K.; Naik, Aparajita; Ramachandra, Raghavendra; Raja, Kiran; Desai, Adavi R.. (2022) Collaborative representation of convolutional neural network features to detect artificial ripening of banana using multispectral imaging. Journal of Food Processing and Preservation
    Academic article
  • Mudgalgundurao, Raghavendra; Schuch, Patrick; Raja, Kiran; Ramachandra, Raghavendra; Damer, Naser. (2022) Pixel-wise supervision for presentation attack detection on identity document cards. IET Biometrics
    Academic article
  • Qin, Le; Peng, Fei; Long, Min; Ramachandra, Raghavendra; Busch, Christoph. (2022) Vulnerabilities of Unattended Face Verification Systems to Facial Components-based Presentation Attacks: An Empirical Study. ACM Transactions on Privacy and Security (TOPS)
    Academic article

2021

  • Khodabakhsh, Ali; Busch, Christoph; Ramachandra, Raghavendra. (2021) Automated Authentication of Audiovisual Contents: A Biometric Approach. Doktoravhandlinger ved NTNU (213)
    Doctoral dissertation
  • Grimmer, Marcel; Ramachandra, Raghavendra; Busch, Christoph. (2021) Deep Face Age Progression: A Survey. IEEE Access
    Academic article
  • Zhang, Haoyu; Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Damer, Naser; Busch, Christoph. (2021) MIPGAN—Generating Strong and High Quality Morphing Attacks Using Identity Prior Driven GAN. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2021) Face Morphing Attack Generation and Detection: A Comprehensive Survey. IEEE Transactions on Technology and Society
    Academic article
  • Qin, Le; Peng, Fei; Venkatesh, Sushma; Ramachandra, Raghavendra; Long, Min; Busch, Christoph. (2021) Low Visual Distortion and Robust Morphing Attacks Based on Partial Face Image Manipulation. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics
    Editorial
  • Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) Direct Unsupervised Super-Resolution Using Generative Adversarial Network (DUS-GAN) for Real-World Data. IEEE Transactions on Image Processing
    Academic article
  • Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security
    Academic article
  • Mandalapu, Hareesh; Reddy, P. N. Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva. (2021) Multilingual Audio-Visual Smartphone Dataset and Evaluation. IEEE Access
    Academic article
  • Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg. (2021) A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics. IET Biometrics
    Academic article
  • Patel, Heena; Chudasama, Vishal; Prajapati, Kalpesh; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) ThermISRnet: An efficient thermal image super-resolution network. Optical Engineering: The Journal of SPIE
    Academic article
  • Vakhshiteh, Fatemeh; Nickabadi, Ahmad; Ramachandra, Raghavendra. (2021) Adversarial Attacks against Face Recognition: A Comprehensive Study. IEEE Access
    Academic article
  • Chudasama, Vishal; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2021) Compact and progressive network for enhanced single image super-resolution—ComPrESRNet. The Visual Computer
    Academic article
  • Mandalapu, Hareesh; Reddy P N, Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva. (2021) Audio-Visual Biometric Recognition and Presentation Attack Detection: A Comprehensive Survey. IEEE Access
    Academic literature review
  • Mandalapu, Hareesh; Elbo, Thomas Møller; Ramachandra, Raghavendra; Busch, Christoph. (2021) Cross-lingual Speaker Verification: Evaluation On X-Vector Method. Springer
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Busch, Christoph; Ramachandra, Raghavendra. (2021) Multilingual Voice Impersonation Dataset and Evaluation. Springer
    Academic chapter/article/Conference paper
  • Chowdhury, Tamal; Shivakumara, Palaiahnakote; Pal, Umapada; Lu, Tong; Ramachandra, Raghavendra; Chanda, Sukalpa. (2021) DCINN: Deformable Convolution and Inception Based Neural Network for Tattoo Text Detection Through Skin Region. Springer
    Academic chapter/article/Conference paper
  • Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. Lecture Notes in Computer Science (LNCS)
    Academic article

2020

  • Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2020) Video based deception detection using deep recurrent convolutional neural network. Communications in Computer and Information Science (CCIS)
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2020) Single image face morphing attack detection using ensemble of features. 2020 IEEE 23rd International Conference on Information Fusion (FUSION)
    Academic article
  • Ahmed, Javed; Yildirim Yayilgan, Sule; Nowostaki, Mariusz; Ramachandra, Raghavendra; Elezaj, Ogerta; Abomohara, Mohamad. (2020) GDPR compliant consent driven data protection in online social networks: A blockchain-based approach. 2020 3rd International Conference on Information and Computer Technologies (ICICT)
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Spreeuwers, Luuk; Veldhuis, Raymond; Busch, Christoph. (2020) Detecting morphed face attacks using residual noise from deep multi-scale context aggregation network. 2020 IEEE Winter Conference on Applications of Computer Vision (WACV)
    Academic article
  • Krishnani, Divya; Shivakumara, Palaiahnakote; Lu, Tong; Pal, Umapada; Ramachandra, Raghavendra. (2020) Structure Function Based Transform Features for Behavior-Oriented Social Media Image Classification. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong; Blumenstein, Michael. (2020) A New U-Net Based License Plate Enhancement Model in Night and Day Images. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) Fused Spectral Features in Kernel Weighted Collaborative Representation for Gender Classification Using Ocular Images. Advances in Intelligent Systems and Computing
    Academic article
  • Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Kanchan, Swati; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong. (2020) Graph attention network for detecting license plates in crowded street scenes. Pattern Recognition Letters
    Academic article
  • Auksorius, Egidijus; Raja, Kiran; Topcu, Berkay; Ramachandra, Raghavendra; Busch, Christoph; Boccara, Claude A. (2020) Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging. IEEE Access
    Academic article
  • Ahmed, Javed; Yildirim Yayilgan, Sule; Nowostawski, Mariusz; Abomhara, Mohamed Ali Saleh; Ramachandra, Raghavendra; Elezaj, Ogerta. (2020) Towards Blockchain-based GDPR-compliant Online Social Networks: Challenges, Opportunities and Way Forward. Advances in Intelligent Systems and Computing
    Academic article
  • Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Iris and periocular biometrics for head mounted displays: Segmentation, recognition, and synthetic data generation. Image and Vision Computing
    Academic article
  • Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Periocular Biometrics in Head-Mounted Displays: A Sample Selection Approach for Better Recognition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) Collaborative representation of blur invariant deep sparse features for periocular recognition from smartphones. Image and Vision Computing
    Academic article
  • Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Fusing Iris and Periocular Region for User Verification in Head Mounted Displays. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Rai, Aashish; Chudasama, Vishal; Upla, Kishor; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) ComSupResNet: A Compact Super-Resolution Network for Low-Resolution Face Images. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper

2019

  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Anchored kernel hashing for cancelable template protection for cross-spectral periocular data. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma; Busch, Christoph. (2019) Design and Development of Low-Cost Sensor to Capture Ventral and Dorsal Finger Vein for Biometric Authentication . IEEE Sensors Journal
    Academic article
  • Nag, Sauradip; Ramachandra, Raghavendra; Shivakumara, Palaiahnakote; Pal, Umapada; Lu, Tong; Kankanhalli, Mohan S.. (2019) CRNN Based Jersey-Bib Number/Text Recognition in Sports and Marathon Images. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Spreeuwers, Luuk; Veldhuis, Raymond N.J.; Busch, Christoph. (2019) Morphed Face Detection Based on Deep Color Residual Noise. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raja, Kiran; Damer, Naser; Ramachandra, Raghavendra; Boutros, Fadi; Busch, Christoph. (2019) Cross-Spectral Periocular Recognition by Cascaded Spectral Image Transformation. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-spectral Imaging To Detect Artificial Ripening Of Banana: A Comprehensive Empirical Study. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2019) Robust Algorithm for Multimodal Deception Detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Towards Reducing the Error Rates in Template Protection for Iris Recognition Using Custom Cuckoo Filters. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) An Empirical Evaluation of Deep Architectures on Generalization of Smartphone-based Face Image Quality Assessment. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Image Quality and Texture-Based Features for Reliable Textured Contact Lens Detection. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Empirical Evaluation of Texture-Based Print and Contact Lens Iris Presentation Attack Detection Methods. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) A New Multi-spectral Iris Acquisition Sensor for Biometric Verification and Presentation Attack Detection . IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2019) Towards making Morphing Attack Detection robust using hybrid Scale-Space Colour Texture Features. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Das, Abhijit; Galdi, Chiara; Han, Hu; Ramachandra, Raghavendra; Dugelay, Jean-Luc; Dantcheva, An-titza. (2019) Recent Advances in Biometric Technology for Mobile Devices. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, Rajendra S. (2019) Detecting Glass in Ocular Region Based on Grassmann Manifold Projection Metric Learning by Exploring Spectral Imaging. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2019) Subjective Evaluation of Media Consumer Vulnerability to Fake Audiovisual Content. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-Spectral Imaging for Artificial Ripened Banana Detection. European Workshop on Visual Information Processing
    Academic article
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma; Gad, Rajendra; Busch, Christoph. (2019) Visible to band gender classification: An extensive experimental evaluation based on multi-spectral imaging. IEEE Xplore Digital Library
    Academic article
  • Raja, Kiran; Ramachandra, Raghavendra; Auksorius, Egidijus; Busch, Christoph. (2019) Subsurface and layer intertwined template protection using inherent properties of full-field optical coherence tomography fingerprint imaging. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Obtaining Stable Iris Codes Exploiting Low-Rank Tensor Space and Spatial Structure Aware Refinement for Better Iris Recognition. IEEE Xplore Digital Library
    Academic article

2018

  • Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2018) Improved ear verification after surgery - An approach based on collaborative representation of locally competitive features. Pattern Recognition
    Academic article
  • Singh, Jag Mohan; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra. (2018) Hessian-based Robust Ray-Tracing of Implicit Surfaces on GPU. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Vetrekar, Narayan; Bylappa Raja, Kiran; Gad, Rajendra S; Busch, Christoph. (2018) Detecting Disguise Attacks on Multi-spectral Face Recognition Through Spectral Signatures. International Conference on Pattern Recognition
    Academic article
  • Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2018) Towards Protected and Cancelable Multi-Spectral Face Templates Using Feature Fusion and Kernalized Hashing. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2018) Manifold-Structure Preserving Biometric Templates - A Preliminary Study On Fully Cancelable Smartphone Biometric Templates. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2018) Multi-spectral Imaging For Robust Ocular Biometrics. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2018) Towards a Cancelable Template Protection Across NIR to Visible Spectrum Using Anchored Kernel Hashing – A Study on Cross-Spectral Periocular Images. Advances in Intelligent Systems and Computing
    Academic article
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) Detecting Face Morphing Attacks with Collaborative Representation of Steerable Features. Advances in Intelligent Systems and Computing
    Academic article
  • Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2018) Subjective Logic Based Score Level Fusion: Combining Faces and Fingerprints. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) Transgender Face Recognition with Off-the-shelf Pre-trained CNNs: A comprehensive study. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Stokkenes, Martin; Ramachandra, Raghavendra; Busch, Christoph. (2018) Biometric Transaction Authentication using Smartphones. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Wasnik, Pankaj Shivdayal; Stokkenes, Martin; Busch, Christoph. (2018) Fusion of Multi-Scale Local Phase Quantization Features for Face Presentation Attack Detection. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Thorsen, Tommy Arild Garden; Wasnik, Pankaj Shivdayal; Busch, Christoph; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2018) Assessing Face Image Quality with LSTMs. Norsk Informasjonssikkerhetskonferanse (NISK)
    Academic article
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) A low-cost Multi-Fingervein Verification System. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Vetrekar, Narayan; Bylappa Raja, Kiran; Gad, Rajendra S; Busch, Christoph. (2018) Robust gender classification using extended multi-spectral imaging by exploring the spectral angle mapper. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma; Hegde, Sneha; Dandappanavar, Shreedhar; Busch, Christoph. (2018) Verifying the Newborns without Infection Risks Using Contactless Palmprints. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Stokkenes, Martin; Dunfjeld, Mihkal; Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph. (2018) Baseline Evaluation of Smartphone based Finger-photo Verification System. Norsk Informasjonssikkerhetskonferanse (NISK)
    Academic article
  • Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Stokkenes, Martin; Raja, Kiran B.; Busch, Christoph. (2018) Improved Fingerphoto Verification System Using Multi-scale Second Order Local Structures. Gesellschaft für Informatik
    Academic chapter/article/Conference paper
  • Khodabakhsh, Ali; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Wasnik, Pankaj Shivdayal; Busch, Christoph. (2018) Fake Face Detection Methods: Can They Be Generalized?. Gesellschaft für Informatik
    Academic chapter/article/Conference paper
  • Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2018) A Taxonomy of Audiovisual Fake Multimedia Content Creation Technology. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper

2017

  • Bylappa Raja, Kiran; Auksorius, Egidijus; Ramachandra, Raghavendra; Boccara, A. Claude; Busch, Christoph. (2017) Robust Verification With Subsurface Fingerprint Recognition Using Full Field Optical Coherence Tomography. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Gomez-Barrero, Marta; Rathgeb, Christian; Li, Guoqiang; Ramachandra, Raghavendra; Galbally, Javier; Busch, Christoph. (2017) Multi-biometric template protection based on bloom filters. Information Fusion
    Academic article
  • Wasnik, Pankaj Shivdayal; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection in Face Biometric Systems Using Raw Sensor Data from Smartphones. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Scale-level score fusion of steered pyramid features for cross-spectral periocular verification. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Alaya Cheikh, Faouzi; Busch, Christoph. (2017) On the Vulnerability of Extended Multispectral Face Recognition Systems Towards Presentation Attacks . IEEE Sarnoff Symposium
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Bylappa Raja, Kiran; Busch, Christoph. (2017) Transferable deep convolutional neural network features for fingervein presentation attack detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Stokkenes, Martin; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Sigaard, Morten; Gomez-Barrero, Marta; Busch, Christoph. (2017) Multi-biometric template protection on smartphones: An approach based on binarized statistical features and bloom filters. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection Methods for Face Recognition Systems: A Comprehensive Survey. ACM Computing Surveys
    Academic article
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Multi-patch deep sparse histograms for iris recognition in visible spectrum using collaborative subspace for robust verification. Pattern Recognition Letters
    Academic article
  • Scherhag, Ulrich; Nautsch, Andreas; Rathgeb, Christian; Gomez-Barrero, Marta; Veldhuis, Raymond N.J.; Spreeuwers, Luuk. (2017) Biometric Systems under Morphing Attacks: Assessment of Morphing Techniques and Vulnerability Reporting. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Transferable Deep-CNN Features for Detecting Digital and Print-Scanned Morphed Face Images. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face Presentation Attack Detection by Exploring Spectral Signatures. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Wasnik, Pankaj Shivdayal; Schäfer, Katharina; Ramachandra, Raghavendra; Busch, Christoph; Bylappa Raja, Kiran. (2017) Fusing Biometric Scores Using Subjective Logic for Gait Recognition on Smartphone. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Marcel, Sebastien; Busch, Christoph. (2017) Face Presentation Attack Detection Across Spectrum using Time-Frequency Descriptors of Maximal Response in Laplacian Scale-Space. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Assessing Face Image Quality for Smartphone based Face Recognition System. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Scherhag, Ulrich; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gomez-Barrero, Marta; Rathgeb, Christian; Busch, Christoph. (2017) On the Vulnerability of Face Recognition Systems Towards Morphed Face Attacks. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Shivakumara, Palaiahnakote; Raghavendra, Ramachandra; Qin, Longfei; Bylappa Raja, Kiran; Lu, Tong; Pal, Umapada. (2017) A new multi-modal approach to bib number/text detection and recognition in Marathon images. Pattern Recognition
    Academic article
  • Narayan Tulshidas, Vetrekar; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, R.S.; Busch, Christoph. (2017) Extended Spectral To Visible Comparison Based On Spectral Band Selection Method For Robust Face Recognition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, R.S.; Busch, Christoph. (2017) Extended Multi-spectral Imaging For Gender Classification Based On Image Set. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face morphing versus face averaging: Vulnerability and detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Busch, Christoph. (2017) Robust face presentation attack detection on smartphones : An approach based on variable focus. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Stokkenes, Martin; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Sigaard, Morten; Busch, Christoph. (2017) Feature Level Fused Templates for Multi-Biometric System on Smartphones. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2017) ContlensNet: Robust Iris Contact Lens Detection Using Deep Convolutional Neural Networks. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Extended multispectral face presentation attack detection: An approach based on fusing information from individual spectral bands. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Sequeira, Ana F; Chen, Lulu; Ferryman, James; Wild, Peter; Alonso-Fernandez, Fernando; Bigun, Josef. (2017) Cross-Eyed 2017: Cross-Spectral Iris/Periocular Recognition Competition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Gomez-Barrero, Marta; Rathgeb, Christian; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Biometric Symmetry: Implications on Template Protection. European Signal Processing Conference
    Academic article
  • Vetrekar, Narayan; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2017) Collaborative Representation of Grassmann Manifold Projection Metric for Robust Multi-spectral Face Recognition. Association for Computing Machinery (ACM)
    Chapter
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Collaborative representation of statistically independent filters? response: An application to face recognition under illicit drug abuse alterations. Lecture Notes in Computer Science (LNCS)
    Academic article

2016

  • Vetrekar, N.T.; Ramachandra, Raghavendra; Gad, R.S.; Naik, G.M.. (2016) Photometric normalization techniques for extended multi-spectral face recognition: A comparative analysis. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Weighted Comparison Score Fusion for Accurate Verification of Surgically Altered Periocular Region. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Collaborative representation of deep sparse filtered features for robust verification of smartphone periocular images. IEEE Signal Processing Society
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Dynamic Scale Selected Laplacian Decomposed Frequency Response for Cross-Smartphone Periocular Verification in Visible Spectrum. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Eye region based multibiometric fusion to mitigate the effects of body weight variations in face recognition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Sequeira, Ana F; Chen, Lulu; Ferryman, James; Alonso-Fernandez, Fernando; Bigun, Josef; Bylappa Raja, Kiran. (2016) Cross-Eyed - Cross-Spectral Iris/Periocular Recognition Database and Competition. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Vetrekar, N.T.; Ramachandra, Raghavendra; Gad, R.S.. (2016) Low-cost Multi-spectral Face Imaging For Robust Face Recognition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2016) Cross-Spectrum Periocular Authentication for NIR and Visible Images Using Bank of Statistical Filters. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Biometric recognition of surgically altered periocular region: A comprehensive study. IEEE Press
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Busch, Christoph. (2016) Learning deeply coupled autoencoders for smartphone based robust periocular verification. Proceedings of IEEE International Conference on Image Processing
    Academic article

2015

  • Roy, Sangheeta; Shivakumara, Palaiahnakote; Mondal, Prabir; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong. (2015) A new multi-modal technique for bib number/text detection in natural images. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Fusion of Face and Periocular Information for Improved Authentication on Smartphones. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Texture based features for robust palmprint recognition: a comparative study. EURASIP Journal on Multimedia and Information Security
    Academic article
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Alaya Cheikh, Faouzi; Busch, Christoph. (2015) Evaluation of Fusion Approaches for Face Recognition using Light Field Cameras. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Vemuri, Vinay Krishna; Busch, Christoph. (2015) Smartphone based visible iris recognition using deep sparse filtering. Pattern Recognition Letters
    Academic article
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Busch, Christoph. (2015) Exploring the Usefulness of Light Field Camera for Biometrics : An Empirical Study on Face and Iris Recognition. IEEE Transactions on Information Forensics and Security
    Academic article
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Exploring dorsal finger vein pattern for robust person recognition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Robust Scheme for Iris Presentation Attack Detection Using Multiscale Binarized Statistical Image Features. IEEE Transactions on Information Forensics and Security
    Academic article
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing
    Academic article
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Multi-modal Authentication System for Smartphones Using Face, Iris and Periocular. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Iris imaging in visible spectrum using white LED. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Avinash, Manasa; Marcel, Sebastien; Busch, Christoph. (2015) Finger vein liveness detection using motion magnification . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation attack detection using Laplacian decomposed frequency response for visible spectrum and Near-Infra-Red iris systems . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation Attack Detection Algorithms for Finger Vein Biometrics: A Comprehensive Study. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Time-Frequency Features of Laplacian Decomposition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) An efficient finger vein indexing scheme based on unsupervised clustering. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Improved Face Recognition by Combining Information from Multiple Cameras in Automatic Border Control System. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Face Image Resolution Enhancement based on Weighted Fusion of Wavelet Decomposition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Surbiryala, Jayachander; Raghavendra, Rachamandra; Busch, Christoph. (2015) Finger vein indexing based on binary features. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) Hand Dorsal Vein Recognition: Sensor, Algorithms and Evaluation. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Tome, P.; Raghavendra, Rachamandra; Busch, Christoph; Tirunagari, Santosh; Poh, Norman; Shekar, B. H.. (2015) The 1st Competition on Counter Measures to Finger Vein Spoofing Attacks. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Video Presentation Attack Detection in Visible Spectrum Iris Recognition Using Magnified Phase Information. IEEE Transactions on Information Forensics and Security
    Academic article

2014

  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Surbiryala, Jayachander; Busch, Christoph. (2014) A low-cost multimodal Biometric Sensor to capture Finger Vein and Fingerprint. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph; Mondal, Soumik. (2014) An Empirical Study of Smartphone Based Iris Recognition in Visible Spectrum. ACM Publications
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Surbiryala, Jayachander; Bylappa Raja, Kiran; Busch, Christoph. (2014) Novel Finger Vascular Pattern Imaging Device for Robust Biometric Verification. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2014) Smartphone Authentication System Using Periocular Biometrics. Gesellschaft für Informatik
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2014) Smartphone Based Robust Iris Recognition in Visible Spectrum using Clustered K-means Features. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection on visible spectrum iris recognition by exploring inherent characteristics of Light Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2014) Automatic Face Quality Assessment from Video using Gray Level Co-occurrence Matrix: An Empirical Study on Automatic Border Control System. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2014) Binarized statistical features for improved iris and periocular recognition in visible spectrum. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Novel image fusion scheme based on dependency measure for robust multispectral palmprint recognition. Pattern Recognition
    Academic article
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Robust palmprint verification using sparse representation of binarized statistical features: a comprehensive study. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics. European Signal Processing Conference
    Academic article

2013

  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Combining Iris and Periocular Recognition using Light Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2013) Robust “On-the-Fly” person identification using Sparse Representation. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Alaya Cheikh, Faouzi; Yang, Bian; Busch, Christoph. (2013) Robust iris recognition using light-field camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Pflug, Anika; Yang, Bian; Busch, Christoph. (2013) 3D face reconstruction and multimodal person identification from video captured using smartphone camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Improved face recognition at a distance using light field camera & super resolution schemes. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph; Yang, Bian. (2013) Scaling-Robust Fingerprint Verification with Smartphone Camera in Real-life Scenarios. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) GUCLF: a new light field face database. SPIE - The International Society for Optics and Photonics
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Comparative Evaluation of Super-Resolution Techniques For Multi-Face Recognition Using Light-Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) A Novel Image Fusion Scheme For Robust Multiple Face Recognition With Light-field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Yang, Bian; Bylappa Raja, Kiran; Busch, Christoph. (2013) A New Perspective - Face Recognition with Light-Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Multi-face recognition at a distance using light-field camera. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper

2012

  • Raghavendra, Rachamandra. (2012) PSO Based Framework for Weighted Feature Level Fusion of Face and Palmprint. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra. (2012) Sparse Representation for Accurate Person Recognition Using Hand Vein Biometrics. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Li, Guoqiang; Yang, Bian; Raghavendra, Rachamandra; Busch, Christoph. (2012) Testing Mobile Phone Camera Based Fingerprint Recognition under Real-Life Scenarios. Akademika forlag
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2012) Accurate face detection in video based on likelihood assessment. Akademika forlag
    Academic chapter/article/Conference paper

Journal publications

  • Prabhu, Anish; Naik, Aparajita; Raut, Sakshi; Vetrekar, Narayan; Ramachandra, Raghavendra; Gad, R.S.. (2025) Employing Non-Destructive Approach of Spectral Imaging to Detect Artificially Degreened Lemon. IEEE Sensors Letters
    Academic article
  • Chatterjee, Ayan; Riegler, Michael; Johnson, Miriam S.; Das, Jishnu; Pahari, Nibedita; Ramachandra, Raghavendra. (2025) Erratum: Author Correction: Exploring online public survey lifestyle datasets with statistical analysis, machine learning and semantic ontology (Scientific reports (2024) 14 1 DOI: 10.1038/s41598-024-74539-6.). Scientific Reports
    Errata
  • Ramachandra, Raghavendra; Vetrekar, Narayan; Patwardhan, Sushrut Dattatraya; Venkatesh, Sushma Krupa; Naik, Gauresh; Gad, R.S.. (2025) PCGattnNet: A 3D Point Cloud Dynamic Graph Attention for Generalizable Face Presentation Attack Detection. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Albaluchi, Yousaf Mohammad Yaqoob; Fu, Biying; Damer, Naser; Ramachandra, Raghavendra; Raja, Kiran. (2025) UAV-based person re-identification: A survey of UAV datasets, approaches, and challenges. Computer Vision and Image Understanding
    Academic article
  • Mondal, Ayan; Shrivastava, Vimal K.; Chatterjee, Ayan; Ramachandra, Raghavendra. (2025) Sb-PiPLU: A Novel Parametric Activation Function for Deep Learning. IEEE Access
    Academic article
  • Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph Günther. (2025) SynMorph: Generating Synthetic Face Morphing Dataset With Mated Samples. IEEE Access
    Academic article
  • Panchananam, Lakshmi Srinivas; Chandaliya, Praveen Kumar; Akhtar, Zahid; Upla, Kishor; Ramachandra, Raghavendra. (2025) WaveletFusion: enhancing plant leaf disease classification with multi-scale feature extraction and explainable AI. Expert Systems With Applications
    Academic article
  • Sharma, Geetanjali; Jaswal, Gaurav; Nigam, Aditya; Ramachandra, Raghavendra. (2025) FISNET: A Learnable Fusion-based Iris Segmentation Network Improving Robustness Across NIR and VIS Modalities. IEEE Access
    Academic article
  • Singh, Jag Mohan; Ramachandra, Raghavendra. (2024) 3-D Face Morphing Attacks: Generation, Vulnerability and Detection. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Jalab, Hamid A.; Ibrahim, Rabha W.; Ramachandra, Raghavendra; Pal, Umapada. (2024) A Conformable Moments-Based Deep Learning System for Forged Handwriting Detection. IEEE Transactions on Neural Networks and Learning Systems
    Academic article
  • Zhang, Wentian; Liu, Haozhe; Xie, Jinheng; Huang, Yawen; Zhang, Yu; Li, Yuexiang. (2024) Anomaly detection via gating highway connection for retinal fundus images. Pattern Recognition
    Academic article
  • Zhang, Wentian; Liu, Haozhe; Liu, Feng; Ramachandra, Raghavendra. (2024) A uniform representation model for OCT-based fingerprint presentation attack detection and reconstruction. Pattern Recognition
    Academic article
  • Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph Günther. (2024) Generalized Single-Image-Based Morphing Attack Detection Using Deep Representations from Vision Transformer. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Chandaliya, Praveen Kumar; Bylappa Raja, Kiran; Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Synthetic Ethnicity Alteration for Diversifying Face Datasets - Investigating Recognition and Quality. IEEE International Workshop on Information Forensics and Security (WIFS)
    Academic article
  • Liu, Xinwei; Raja, Kiran; Wang, Renfang; Qiu, Hong; Wu, Hucheng; Sun, Dechao. (2024) A Latent Fingerprint in the Wild Database. IEEE Transactions on Information Forensics and Security
    Academic article
  • Chatterjee, Ayan; Riegler, Michael; Johnson, Miriam S.; Das, Jishnu; Pahari, Nibedita; Ramachandra, Raghavendra. (2024) Exploring online public survey lifestyle datasets with statistical analysis, machine learning and semantic ontology. Scientific Reports
    Academic article
  • Arıcan, Tuğçe; Veldhuis, Raymond Nicolaas Johan; Spreeuwers, Luuk; Bergeron, Loic Kevin; Busch, Christoph ; Jalilian, Ehsaneddin. (2024) A Comparative Study of Cross-Device Finger Vein Recognition Using Classical and Deep Learning Approaches. IET Biometrics
    Academic article
  • Agarwal, Ayush; Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Prasanna, S. R. Mahadeva. (2024) Biometrics in extended reality: a review. Discover Artificial Intelligence
    Academic literature review
  • Li, Hailin; Ramachandra, Raghavendra. (2024) Fingerphoto morphing attack generation using texture descriptors based landmarks. Scientific Reports
    Academic article
  • Kong, Zhe; Zhang, Wentian; Liu, Feng; Luo, Wenhan; Liu, Haozhe; Shen, Linlin. (2023) Taming Self-Supervised Learning for Presentation Attack Detection: De-Folding and De-Mixing. IEEE Transactions on Neural Networks and Learning Systems
    Academic article
  • Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph Günther. (2023) Morph-PIPE: Plugging in Identity Prior to Enhance Face Morphing Attack Based on Diffusion Model. NIKT: Norsk IKT-konferanse for forskning og utdanning
    Academic article
  • Busch, Christoph ; Deravi, Farzin; Frings, Dinusha; Kindt, Els; Lessmann, Ralph; Nouak, Alexander. (2023) Facilitating free travel in the Schengen area—A position paper by the European Association for Biometrics. IET Biometrics
    Academic article
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Gad, R.S.. (2023) Multilevel Fusion of Multispectral Images to Detect the Artificially Ripened Banana. IEEE Sensors Letters
    Academic article
  • Myhrvold, Henning; Zhang, Haoyu; Tapia, Juan; Ramachandra, Raghavendra; Busch, Christoph Günther. (2023) Explainable Visualization for Morphing Attack Detection. NIKT: Norsk IKT-konferanse for forskning og utdanning
    Academic article
  • Singh, Jag Mohan; Ramachandra, Raghavendra. (2023) Deep Composite Face Image Attacks: Generation, Vulnerability and Detection. IEEE Access
    Academic article
  • Montazerian, Arman; Haj Mohammadian Baghban, Mohammad; Ramachandra, Raghavendra; Goutianos, Stergios. (2023) A machine learning approach for assessing the compressive strength of cementitious composites reinforced by graphene derivatives. Construction and Building Materials
    Academic article
  • Shivakumara, Palaiahnakote; Chowdhury, Pinaki Nath; Pal, Umapada; Doermann, David; Ramachandra, Raghavendra; Lu, Tong. (2022) A Knowledge Enforcement Network-Based Approach for Classifying a Photographer's Images. International Journal of Pattern Recognition and Artificial Intelligence
    Academic article
  • Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Sarvaiya, Anjali; Upla, Kishor; Raja, Kiran. (2022) Unsupervised Denoising for Super-Resolution (UDSR) of Real-World Images. IEEE Access
    Academic article
  • Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Nag, Sauradip; Pal, Umapada; Lu, Tong. (2022) An Episodic Learning Network for Text Detection on Human Bodies in Sports Images. IEEE transactions on circuits and systems for video technology (Print)
    Academic article
  • Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben. (2022) Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach. Information Fusion
    Academic article
  • Ramachandra, Raghavendra; Li, Guoqiang. (2022) Multimodality for Reliable Single Image Based Face Morphing Attack Detection. IEEE Access
    Academic article
  • Banerjee, Ayan; Shivakumara, Palaiahnakote; Pal, Umapada; Ramachandra, Raghavendra; Liu, Cheng-Lin. (2022) A comprehensive scheme for tattoo text detection. Pattern Recognition Letters
    Academic article
  • Raja, Kiran; Gupta, Gourav; Venkatesh, Sushma; Ramachandra, Raghavendra; Busch, Christoph. (2022) Towards generalized morphing attack detection by learning residuals. Image and Vision Computing
    Academic article
  • Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Lu, Tong; Pal, Umapada; Antonacopoulos, Apostolos. (2022) A New Deep Wavefront Based Model for Text Localization in 3D Video. IEEE transactions on circuits and systems for video technology (Print)
    Academic article
  • Vetrekar, Narayan; Prabhu, Anish K.; Naik, Aparajita; Ramachandra, Raghavendra; Raja, Kiran; Desai, Adavi R.. (2022) Collaborative representation of convolutional neural network features to detect artificial ripening of banana using multispectral imaging. Journal of Food Processing and Preservation
    Academic article
  • Mudgalgundurao, Raghavendra; Schuch, Patrick; Raja, Kiran; Ramachandra, Raghavendra; Damer, Naser. (2022) Pixel-wise supervision for presentation attack detection on identity document cards. IET Biometrics
    Academic article
  • Qin, Le; Peng, Fei; Long, Min; Ramachandra, Raghavendra; Busch, Christoph. (2022) Vulnerabilities of Unattended Face Verification Systems to Facial Components-based Presentation Attacks: An Empirical Study. ACM Transactions on Privacy and Security (TOPS)
    Academic article
  • Grimmer, Marcel; Ramachandra, Raghavendra; Busch, Christoph. (2021) Deep Face Age Progression: A Survey. IEEE Access
    Academic article
  • Zhang, Haoyu; Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Damer, Naser; Busch, Christoph. (2021) MIPGAN—Generating Strong and High Quality Morphing Attacks Using Identity Prior Driven GAN. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2021) Face Morphing Attack Generation and Detection: A Comprehensive Survey. IEEE Transactions on Technology and Society
    Academic article
  • Qin, Le; Peng, Fei; Venkatesh, Sushma; Ramachandra, Raghavendra; Long, Min; Busch, Christoph. (2021) Low Visual Distortion and Robust Morphing Attacks Based on Partial Face Image Manipulation. IEEE Transactions on Biometrics, Behavior, and Identity Science
    Academic article
  • Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics
    Editorial
  • Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) Direct Unsupervised Super-Resolution Using Generative Adversarial Network (DUS-GAN) for Real-World Data. IEEE Transactions on Image Processing
    Academic article
  • Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security
    Academic article
  • Mandalapu, Hareesh; Reddy, P. N. Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva. (2021) Multilingual Audio-Visual Smartphone Dataset and Evaluation. IEEE Access
    Academic article
  • Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg. (2021) A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics. IET Biometrics
    Academic article
  • Patel, Heena; Chudasama, Vishal; Prajapati, Kalpesh; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) ThermISRnet: An efficient thermal image super-resolution network. Optical Engineering: The Journal of SPIE
    Academic article
  • Vakhshiteh, Fatemeh; Nickabadi, Ahmad; Ramachandra, Raghavendra. (2021) Adversarial Attacks against Face Recognition: A Comprehensive Study. IEEE Access
    Academic article
  • Chudasama, Vishal; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2021) Compact and progressive network for enhanced single image super-resolution—ComPrESRNet. The Visual Computer
    Academic article
  • Mandalapu, Hareesh; Reddy P N, Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva. (2021) Audio-Visual Biometric Recognition and Presentation Attack Detection: A Comprehensive Survey. IEEE Access
    Academic literature review
  • Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2020) Video based deception detection using deep recurrent convolutional neural network. Communications in Computer and Information Science (CCIS)
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2020) Single image face morphing attack detection using ensemble of features. 2020 IEEE 23rd International Conference on Information Fusion (FUSION)
    Academic article
  • Ahmed, Javed; Yildirim Yayilgan, Sule; Nowostaki, Mariusz; Ramachandra, Raghavendra; Elezaj, Ogerta; Abomohara, Mohamad. (2020) GDPR compliant consent driven data protection in online social networks: A blockchain-based approach. 2020 3rd International Conference on Information and Computer Technologies (ICICT)
    Academic article
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Spreeuwers, Luuk; Veldhuis, Raymond; Busch, Christoph. (2020) Detecting morphed face attacks using residual noise from deep multi-scale context aggregation network. 2020 IEEE Winter Conference on Applications of Computer Vision (WACV)
    Academic article
  • Krishnani, Divya; Shivakumara, Palaiahnakote; Lu, Tong; Pal, Umapada; Ramachandra, Raghavendra. (2020) Structure Function Based Transform Features for Behavior-Oriented Social Media Image Classification. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong; Blumenstein, Michael. (2020) A New U-Net Based License Plate Enhancement Model in Night and Day Images. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) Fused Spectral Features in Kernel Weighted Collaborative Representation for Gender Classification Using Ocular Images. Advances in Intelligent Systems and Computing
    Academic article
  • Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Kanchan, Swati; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong. (2020) Graph attention network for detecting license plates in crowded street scenes. Pattern Recognition Letters
    Academic article
  • Auksorius, Egidijus; Raja, Kiran; Topcu, Berkay; Ramachandra, Raghavendra; Busch, Christoph; Boccara, Claude A. (2020) Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging. IEEE Access
    Academic article
  • Ahmed, Javed; Yildirim Yayilgan, Sule; Nowostawski, Mariusz; Abomhara, Mohamed Ali Saleh; Ramachandra, Raghavendra; Elezaj, Ogerta. (2020) Towards Blockchain-based GDPR-compliant Online Social Networks: Challenges, Opportunities and Way Forward. Advances in Intelligent Systems and Computing
    Academic article
  • Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Iris and periocular biometrics for head mounted displays: Segmentation, recognition, and synthetic data generation. Image and Vision Computing
    Academic article
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) Collaborative representation of blur invariant deep sparse features for periocular recognition from smartphones. Image and Vision Computing
    Academic article
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Anchored kernel hashing for cancelable template protection for cross-spectral periocular data. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma; Busch, Christoph. (2019) Design and Development of Low-Cost Sensor to Capture Ventral and Dorsal Finger Vein for Biometric Authentication . IEEE Sensors Journal
    Academic article
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-Spectral Imaging for Artificial Ripened Banana Detection. European Workshop on Visual Information Processing
    Academic article
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma; Gad, Rajendra; Busch, Christoph. (2019) Visible to band gender classification: An extensive experimental evaluation based on multi-spectral imaging. IEEE Xplore Digital Library
    Academic article
  • Raja, Kiran; Ramachandra, Raghavendra; Auksorius, Egidijus; Busch, Christoph. (2019) Subsurface and layer intertwined template protection using inherent properties of full-field optical coherence tomography fingerprint imaging. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Obtaining Stable Iris Codes Exploiting Low-Rank Tensor Space and Spatial Structure Aware Refinement for Better Iris Recognition. IEEE Xplore Digital Library
    Academic article
  • Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2018) Improved ear verification after surgery - An approach based on collaborative representation of locally competitive features. Pattern Recognition
    Academic article
  • Ramachandra, Raghavendra; Vetrekar, Narayan; Bylappa Raja, Kiran; Gad, Rajendra S; Busch, Christoph. (2018) Detecting Disguise Attacks on Multi-spectral Face Recognition Through Spectral Signatures. International Conference on Pattern Recognition
    Academic article
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2018) Towards a Cancelable Template Protection Across NIR to Visible Spectrum Using Anchored Kernel Hashing – A Study on Cross-Spectral Periocular Images. Advances in Intelligent Systems and Computing
    Academic article
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) Detecting Face Morphing Attacks with Collaborative Representation of Steerable Features. Advances in Intelligent Systems and Computing
    Academic article
  • Stokkenes, Martin; Ramachandra, Raghavendra; Busch, Christoph. (2018) Biometric Transaction Authentication using Smartphones. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Thorsen, Tommy Arild Garden; Wasnik, Pankaj Shivdayal; Busch, Christoph; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2018) Assessing Face Image Quality with LSTMs. Norsk Informasjonssikkerhetskonferanse (NISK)
    Academic article
  • Wasnik, Pankaj Shivdayal; Stokkenes, Martin; Dunfjeld, Mihkal; Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph. (2018) Baseline Evaluation of Smartphone based Finger-photo Verification System. Norsk Informasjonssikkerhetskonferanse (NISK)
    Academic article
  • Gomez-Barrero, Marta; Rathgeb, Christian; Li, Guoqiang; Ramachandra, Raghavendra; Galbally, Javier; Busch, Christoph. (2017) Multi-biometric template protection based on bloom filters. Information Fusion
    Academic article
  • Stokkenes, Martin; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Sigaard, Morten; Gomez-Barrero, Marta; Busch, Christoph. (2017) Multi-biometric template protection on smartphones: An approach based on binarized statistical features and bloom filters. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection Methods for Face Recognition Systems: A Comprehensive Survey. ACM Computing Surveys
    Academic article
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Multi-patch deep sparse histograms for iris recognition in visible spectrum using collaborative subspace for robust verification. Pattern Recognition Letters
    Academic article
  • Scherhag, Ulrich; Nautsch, Andreas; Rathgeb, Christian; Gomez-Barrero, Marta; Veldhuis, Raymond N.J.; Spreeuwers, Luuk. (2017) Biometric Systems under Morphing Attacks: Assessment of Morphing Techniques and Vulnerability Reporting. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Transferable Deep-CNN Features for Detecting Digital and Print-Scanned Morphed Face Images. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face Presentation Attack Detection by Exploring Spectral Signatures. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
    Academic article
  • Wasnik, Pankaj Shivdayal; Schäfer, Katharina; Ramachandra, Raghavendra; Busch, Christoph; Bylappa Raja, Kiran. (2017) Fusing Biometric Scores Using Subjective Logic for Gait Recognition on Smartphone. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Shivakumara, Palaiahnakote; Raghavendra, Ramachandra; Qin, Longfei; Bylappa Raja, Kiran; Lu, Tong; Pal, Umapada. (2017) A new multi-modal approach to bib number/text detection and recognition in Marathon images. Pattern Recognition
    Academic article
  • Gomez-Barrero, Marta; Rathgeb, Christian; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Biometric Symmetry: Implications on Template Protection. European Signal Processing Conference
    Academic article
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Collaborative representation of statistically independent filters? response: An application to face recognition under illicit drug abuse alterations. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Vetrekar, N.T.; Ramachandra, Raghavendra; Gad, R.S.; Naik, G.M.. (2016) Photometric normalization techniques for extended multi-spectral face recognition: A comparative analysis. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Sequeira, Ana F; Chen, Lulu; Ferryman, James; Alonso-Fernandez, Fernando; Bigun, Josef; Bylappa Raja, Kiran. (2016) Cross-Eyed - Cross-Spectral Iris/Periocular Recognition Database and Competition. GI-Edition Lecture Notes in Informatics (LNI)
    Academic article
  • Ramachandra, Raghavendra; Busch, Christoph. (2016) Learning deeply coupled autoencoders for smartphone based robust periocular verification. Proceedings of IEEE International Conference on Image Processing
    Academic article
  • Roy, Sangheeta; Shivakumara, Palaiahnakote; Mondal, Prabir; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong. (2015) A new multi-modal technique for bib number/text detection in natural images. Lecture Notes in Computer Science (LNCS)
    Academic article
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Texture based features for robust palmprint recognition: a comparative study. EURASIP Journal on Multimedia and Information Security
    Academic article
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Vemuri, Vinay Krishna; Busch, Christoph. (2015) Smartphone based visible iris recognition using deep sparse filtering. Pattern Recognition Letters
    Academic article
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Busch, Christoph. (2015) Exploring the Usefulness of Light Field Camera for Biometrics : An Empirical Study on Face and Iris Recognition. IEEE Transactions on Information Forensics and Security
    Academic article
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Robust Scheme for Iris Presentation Attack Detection Using Multiscale Binarized Statistical Image Features. IEEE Transactions on Information Forensics and Security
    Academic article
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing
    Academic article
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Video Presentation Attack Detection in Visible Spectrum Iris Recognition Using Magnified Phase Information. IEEE Transactions on Information Forensics and Security
    Academic article
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Novel image fusion scheme based on dependency measure for robust multispectral palmprint recognition. Pattern Recognition
    Academic article
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics. European Signal Processing Conference
    Academic article

Books

  • Kabbani, Wassim Hassan; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Radial Distortion in Face Images: Detection and Impact. IEEE conference proceedings IEEE conference proceedings
    Academic anthology/Conference proceedings
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Li, Guoqiang; Raja, Kiran. (2023) Differential Newborn Face Morphing Attack Detection using Wavelet Scatter Network. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
    Academic anthology/Conference proceedings
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Jaswal, Gaurav; Li, Guoqiang. (2023) Vulnerability of Face Morphing Attacks: A Case Study on Lookalike and Identical Twins. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
    Academic anthology/Conference proceedings
  • Das, Soumik; palaiahnakote, Shivakumara; Pal, Umapada; Ramachandra, Raghavendra. (2023) Gaussian Kernels Based Network for Multiple License Plate Number Detection in Day-Night Images. Springer Nature Springer Nature
    Academic anthology/Conference proceedings
  • Reddy, Arvind; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra. (2023) MLSD-GAN - Generating Strong High Quality Face Morphing Attacks using Latent Semantic Disentanglement. IEEE conference proceedings IEEE conference proceedings
    Academic anthology/Conference proceedings
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Gaonkar, Aniketh; Gad, Rajendra. (2023) Towards the Influence of Eyeglasses on the Cross-spectral Periocular Verification: Does Eyeglass Detection Improve Verification Performance?. ACM Publications ACM Publications
    Academic anthology/Conference proceedings
  • Ramachandra, Raghavendra; Li, Hailin. (2023) 2023 IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW). IEEE conference proceedings IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW) (2023)
    Academic anthology/Conference proceedings

Part of book/report

  • Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph . (2024) Eye Sclera for Fair Face Image Quality Assessment. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph . (2024) Demographic Variability in Face Image Quality Measures. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Singh, Jag Mohan; Venkatesh, Sushma Krupa; Ramachandra, Raghavendra. (2023) Robust Face Morphing Attack Detection Using Fusion of Multiple Features and Classification Techniques. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Li, Hailin. (2023) Finger-NestNet: Interpretable Fingerphoto Verification on Smartphone using Deep Nested Residual Network . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Tapia, Juan E.; Busch, Christoph Günther; Zhang, Haoyu; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2023) Simulating Print/Scan Textures for Morphing Attack Detection. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2023) Face Presentation Attack Detection Using Remote Photoplethysmography Transformer Model. Springer Nature
    Academic chapter/article/Conference paper
  • Xu, Ying; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph . (2022) Adversarial Attacks on Face Recognition Systems. Springer
    Chapter
  • Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Elbo, Thomas Møller; Ramachandra, Raghavendra; Busch, Christoph. (2021) Cross-lingual Speaker Verification: Evaluation On X-Vector Method. Springer
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Busch, Christoph; Ramachandra, Raghavendra. (2021) Multilingual Voice Impersonation Dataset and Evaluation. Springer
    Academic chapter/article/Conference paper
  • Chowdhury, Tamal; Shivakumara, Palaiahnakote; Pal, Umapada; Lu, Tong; Ramachandra, Raghavendra; Chanda, Sukalpa. (2021) DCINN: Deformable Convolution and Inception Based Neural Network for Tattoo Text Detection Through Skin Region. Springer
    Academic chapter/article/Conference paper
  • Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Periocular Biometrics in Head-Mounted Displays: A Sample Selection Approach for Better Recognition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Fusing Iris and Periocular Region for User Verification in Head Mounted Displays. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Rai, Aashish; Chudasama, Vishal; Upla, Kishor; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) ComSupResNet: A Compact Super-Resolution Network for Low-Resolution Face Images. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Nag, Sauradip; Ramachandra, Raghavendra; Shivakumara, Palaiahnakote; Pal, Umapada; Lu, Tong; Kankanhalli, Mohan S.. (2019) CRNN Based Jersey-Bib Number/Text Recognition in Sports and Marathon Images. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Spreeuwers, Luuk; Veldhuis, Raymond N.J.; Busch, Christoph. (2019) Morphed Face Detection Based on Deep Color Residual Noise. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raja, Kiran; Damer, Naser; Ramachandra, Raghavendra; Boutros, Fadi; Busch, Christoph. (2019) Cross-Spectral Periocular Recognition by Cascaded Spectral Image Transformation. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-spectral Imaging To Detect Artificial Ripening Of Banana: A Comprehensive Empirical Study. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2019) Robust Algorithm for Multimodal Deception Detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Towards Reducing the Error Rates in Template Protection for Iris Recognition Using Custom Cuckoo Filters. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) An Empirical Evaluation of Deep Architectures on Generalization of Smartphone-based Face Image Quality Assessment. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Image Quality and Texture-Based Features for Reliable Textured Contact Lens Detection. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Empirical Evaluation of Texture-Based Print and Contact Lens Iris Presentation Attack Detection Methods. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Venkatesh, Sushma; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) A New Multi-spectral Iris Acquisition Sensor for Biometric Verification and Presentation Attack Detection . IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2019) Towards making Morphing Attack Detection robust using hybrid Scale-Space Colour Texture Features. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Das, Abhijit; Galdi, Chiara; Han, Hu; Ramachandra, Raghavendra; Dugelay, Jean-Luc; Dantcheva, An-titza. (2019) Recent Advances in Biometric Technology for Mobile Devices. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, Rajendra S. (2019) Detecting Glass in Ocular Region Based on Grassmann Manifold Projection Metric Learning by Exploring Spectral Imaging. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2019) Subjective Evaluation of Media Consumer Vulnerability to Fake Audiovisual Content. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Singh, Jag Mohan; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra. (2018) Hessian-based Robust Ray-Tracing of Implicit Surfaces on GPU. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2018) Towards Protected and Cancelable Multi-Spectral Face Templates Using Feature Fusion and Kernalized Hashing. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2018) Manifold-Structure Preserving Biometric Templates - A Preliminary Study On Fully Cancelable Smartphone Biometric Templates. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2018) Multi-spectral Imaging For Robust Ocular Biometrics. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2018) Subjective Logic Based Score Level Fusion: Combining Faces and Fingerprints. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) Transgender Face Recognition with Off-the-shelf Pre-trained CNNs: A comprehensive study. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Wasnik, Pankaj Shivdayal; Stokkenes, Martin; Busch, Christoph. (2018) Fusion of Multi-Scale Local Phase Quantization Features for Face Presentation Attack Detection. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) A low-cost Multi-Fingervein Verification System. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Vetrekar, Narayan; Bylappa Raja, Kiran; Gad, Rajendra S; Busch, Christoph. (2018) Robust gender classification using extended multi-spectral imaging by exploring the spectral angle mapper. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma; Hegde, Sneha; Dandappanavar, Shreedhar; Busch, Christoph. (2018) Verifying the Newborns without Infection Risks Using Contactless Palmprints. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Stokkenes, Martin; Raja, Kiran B.; Busch, Christoph. (2018) Improved Fingerphoto Verification System Using Multi-scale Second Order Local Structures. Gesellschaft für Informatik
    Academic chapter/article/Conference paper
  • Khodabakhsh, Ali; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Wasnik, Pankaj Shivdayal; Busch, Christoph. (2018) Fake Face Detection Methods: Can They Be Generalized?. Gesellschaft für Informatik
    Academic chapter/article/Conference paper
  • Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2018) A Taxonomy of Audiovisual Fake Multimedia Content Creation Technology. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Auksorius, Egidijus; Ramachandra, Raghavendra; Boccara, A. Claude; Busch, Christoph. (2017) Robust Verification With Subsurface Fingerprint Recognition Using Full Field Optical Coherence Tomography. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection in Face Biometric Systems Using Raw Sensor Data from Smartphones. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Scale-level score fusion of steered pyramid features for cross-spectral periocular verification. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Alaya Cheikh, Faouzi; Busch, Christoph. (2017) On the Vulnerability of Extended Multispectral Face Recognition Systems Towards Presentation Attacks . IEEE Sarnoff Symposium
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Bylappa Raja, Kiran; Busch, Christoph. (2017) Transferable deep convolutional neural network features for fingervein presentation attack detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Marcel, Sebastien; Busch, Christoph. (2017) Face Presentation Attack Detection Across Spectrum using Time-Frequency Descriptors of Maximal Response in Laplacian Scale-Space. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Assessing Face Image Quality for Smartphone based Face Recognition System. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Scherhag, Ulrich; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gomez-Barrero, Marta; Rathgeb, Christian; Busch, Christoph. (2017) On the Vulnerability of Face Recognition Systems Towards Morphed Face Attacks. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Narayan Tulshidas, Vetrekar; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, R.S.; Busch, Christoph. (2017) Extended Spectral To Visible Comparison Based On Spectral Band Selection Method For Robust Face Recognition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, R.S.; Busch, Christoph. (2017) Extended Multi-spectral Imaging For Gender Classification Based On Image Set. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face morphing versus face averaging: Vulnerability and detection. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Busch, Christoph. (2017) Robust face presentation attack detection on smartphones : An approach based on variable focus. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Stokkenes, Martin; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Sigaard, Morten; Busch, Christoph. (2017) Feature Level Fused Templates for Multi-Biometric System on Smartphones. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2017) ContlensNet: Robust Iris Contact Lens Detection Using Deep Convolutional Neural Networks. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Extended multispectral face presentation attack detection: An approach based on fusing information from individual spectral bands. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Sequeira, Ana F; Chen, Lulu; Ferryman, James; Wild, Peter; Alonso-Fernandez, Fernando; Bigun, Josef. (2017) Cross-Eyed 2017: Cross-Spectral Iris/Periocular Recognition Competition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Vetrekar, Narayan; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2017) Collaborative Representation of Grassmann Manifold Projection Metric for Robust Multi-spectral Face Recognition. Association for Computing Machinery (ACM)
    Chapter
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Weighted Comparison Score Fusion for Accurate Verification of Surgically Altered Periocular Region. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Collaborative representation of deep sparse filtered features for robust verification of smartphone periocular images. IEEE Signal Processing Society
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Dynamic Scale Selected Laplacian Decomposed Frequency Response for Cross-Smartphone Periocular Verification in Visible Spectrum. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Wasnik, Pankaj Shivdayal; Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Eye region based multibiometric fusion to mitigate the effects of body weight variations in face recognition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Vetrekar, N.T.; Ramachandra, Raghavendra; Gad, R.S.. (2016) Low-cost Multi-spectral Face Imaging For Robust Face Recognition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2016) Cross-Spectrum Periocular Authentication for NIR and Visible Images Using Bank of Statistical Filters. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Biometric recognition of surgically altered periocular region: A comprehensive study. IEEE Press
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Fusion of Face and Periocular Information for Improved Authentication on Smartphones. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Alaya Cheikh, Faouzi; Busch, Christoph. (2015) Evaluation of Fusion Approaches for Face Recognition using Light Field Cameras. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Exploring dorsal finger vein pattern for robust person recognition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Multi-modal Authentication System for Smartphones Using Face, Iris and Periocular. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Iris imaging in visible spectrum using white LED. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Avinash, Manasa; Marcel, Sebastien; Busch, Christoph. (2015) Finger vein liveness detection using motion magnification . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation attack detection using Laplacian decomposed frequency response for visible spectrum and Near-Infra-Red iris systems . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation Attack Detection Algorithms for Finger Vein Biometrics: A Comprehensive Study. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Time-Frequency Features of Laplacian Decomposition. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) An efficient finger vein indexing scheme based on unsupervised clustering. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Improved Face Recognition by Combining Information from Multiple Cameras in Automatic Border Control System. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2015) Face Image Resolution Enhancement based on Weighted Fusion of Wavelet Decomposition. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Surbiryala, Jayachander; Raghavendra, Rachamandra; Busch, Christoph. (2015) Finger vein indexing based on binary features. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) Hand Dorsal Vein Recognition: Sensor, Algorithms and Evaluation. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Tome, P.; Raghavendra, Rachamandra; Busch, Christoph; Tirunagari, Santosh; Poh, Norman; Shekar, B. H.. (2015) The 1st Competition on Counter Measures to Finger Vein Spoofing Attacks. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Surbiryala, Jayachander; Busch, Christoph. (2014) A low-cost multimodal Biometric Sensor to capture Finger Vein and Fingerprint. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph; Mondal, Soumik. (2014) An Empirical Study of Smartphone Based Iris Recognition in Visible Spectrum. ACM Publications
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Surbiryala, Jayachander; Bylappa Raja, Kiran; Busch, Christoph. (2014) Novel Finger Vascular Pattern Imaging Device for Robust Biometric Verification. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2014) Smartphone Authentication System Using Periocular Biometrics. Gesellschaft für Informatik
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2014) Smartphone Based Robust Iris Recognition in Visible Spectrum using Clustered K-means Features. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection on visible spectrum iris recognition by exploring inherent characteristics of Light Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics . IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2014) Automatic Face Quality Assessment from Video using Gray Level Co-occurrence Matrix: An Empirical Study on Automatic Border Control System. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2014) Binarized statistical features for improved iris and periocular recognition in visible spectrum. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph. (2014) Robust palmprint verification using sparse representation of binarized statistical features: a comprehensive study. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Combining Iris and Periocular Recognition using Light Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2013) Robust “On-the-Fly” person identification using Sparse Representation. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Bylappa Raja, Kiran; Raghavendra, Rachamandra; Alaya Cheikh, Faouzi; Yang, Bian; Busch, Christoph. (2013) Robust iris recognition using light-field camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Pflug, Anika; Yang, Bian; Busch, Christoph. (2013) 3D face reconstruction and multimodal person identification from video captured using smartphone camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Improved face recognition at a distance using light field camera & super resolution schemes. Association for Computing Machinery (ACM)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Busch, Christoph; Yang, Bian. (2013) Scaling-Robust Fingerprint Verification with Smartphone Camera in Real-life Scenarios. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) GUCLF: a new light field face database. SPIE - The International Society for Optics and Photonics
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Comparative Evaluation of Super-Resolution Techniques For Multi-Face Recognition Using Light-Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) A Novel Image Fusion Scheme For Robust Multiple Face Recognition With Light-field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Yang, Bian; Bylappa Raja, Kiran; Busch, Christoph. (2013) A New Perspective - Face Recognition with Light-Field Camera. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Multi-face recognition at a distance using light-field camera. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra. (2012) PSO Based Framework for Weighted Feature Level Fusion of Face and Palmprint. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra. (2012) Sparse Representation for Accurate Person Recognition Using Hand Vein Biometrics. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Li, Guoqiang; Yang, Bian; Raghavendra, Rachamandra; Busch, Christoph. (2012) Testing Mobile Phone Camera Based Fingerprint Recognition under Real-Life Scenarios. Akademika forlag
    Academic chapter/article/Conference paper
  • Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2012) Accurate face detection in video based on likelihood assessment. Akademika forlag
    Academic chapter/article/Conference paper

Report

  • Khodabakhsh, Ali; Busch, Christoph; Ramachandra, Raghavendra. (2021) Automated Authentication of Audiovisual Contents: A Biometric Approach. Doktoravhandlinger ved NTNU (213)
    Doctoral dissertation

Teaching

Courses

  • IMT4215 - Fordypingsprosjekt
  • IMT4205 - Research Project Planning
  • IMT4210 - Computational Forensics

Outreach

2024

  • Academic lecture
    Ramachandra, Raghavendra; Narayan, Vetrekar; Venkatesh, Sushma Krupa; Nageshker, Savita; Singh, Jag Mohan; Gad, Rajendra. (2024) VoxAtnNet: A 3D Point Clouds Convolutional Neural Network for Generalizable Face Presentation Attack Detection. IEEE 18th IEEE International Conference on Automatic Face and Gesture Recognition, 2024 , Istanbul 2024-05-27 - 2024-05-31
  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra. (2024) 3D Face Morphing Attack Generation using Non-Rigid Registration. IEEE 18th IEEE International Conference on Automatic Face and Gesture Recognition, 2024 , Istanbul 2024-05-27 - 2024-05-31

2023

  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra. (2023) Sound-Print: Generalised Face Presentation Attack Detection using Deep Representation of Sound Echoes. IEEE IEEE International Joint Conference on Biometrics (IJCB) 2023 , Ljubljana 2023-09-25 - 2023-09-28

2022

  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra. (2022) Reliable Face Morphing Attack Detection in On-The-Fly Border Control Scenario with Variation in Image Resolution and Capture Distance. IEEE IEEE International Joint Conference on Biometrics (IJCB 2022) , Abu Dhabi 2022-10-10 - 2022-10-13
  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra. (2022) Fusion of Deep Features for Differential Face Morphing Attack Detection at Automatic Border Control Gates. IEEE IEEE European Workshop on Visual Information Processing (EUVIP 2022) , Lisbon 2022-09-11 - 2022-09-14
  • Academic lecture
    Singh, Jag Mohan; Madhun, Ahmed S.; Kedir, Ahmed; Ramachandra, Raghavendra. (2022) Smartphone based Finger-Photo Verification using Siamese Network. INSTICC Proceedings of the 17th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP , Online 2022-02-06 - 2022-02-08
  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra. (2022) DLDFD: Recurrence free 2D Convolution approach for Deep Fake Detection. SCITEPRESS Proceedings of the 17th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP , Online 2022-02-06 - 2022-02-08
  • Academic lecture
    Patel, C; Jain, A.; Bawkar, S.; Khorasiya, M.; Prajapati, K.; Upla, Kishor. (2022) SRTGAN: Triplet Loss based Generative Adversarial Network for Real-World Super-Resolution. the 7th Seventh International Conference on Computer Vision & Image Processing (CVIP) 2022-11-04 - 2022-11-06
  • Academic lecture
    Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph . (2022) Algorithmic Fairness in Face Morphing Attack Detection. Winter Conference on Applications of Computer Vision Workshops (WACVW) 2022-01-04 - 2022-01-08
  • Academic lecture
    Zhang, W.; Liu, H.; Liu, F.; Ramachandra, Raghavendra; Busch, Christoph . (2022) Effective Presentation Attack Detection Driven by Face Related Task. European Conference on Computer Vision (ECCV) 2022-10-23 - 2022-10-27
  • Poster
    Grimmer, Marcel; Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph Günther. (2022) Time flies by: Analyzing the Impact of Face Ageing on the Recognition Performance with Synthetic Data. 21st International Conference of the Biometrics Special Interest Group (BIOSIG 2022) 2022-09-14 - 2022-09-16
  • Academic lecture
    Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2022) Face Presentation Attack Detection Using Remote Photoplethysmography Transformer Model. VNIT Nagpur 7th International Conference on Computer Vision & Image Processing , Maharashtra - 440010, INDIA 2022-11-04 - 2022-11-06

2021

  • Academic lecture
    Grimmer, Marcel; Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph Günther. (2021) Generation of Non-Deterministic Synthetic Face Datasets Guided by Identity Priors. Norwegian Information Security Conference 2021-11-29 - 2021-12-01
  • Academic lecture
    Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. IEEE International Symposium on Visual Computing , Virtual 2021-10-04 - 2021-10-06
  • Academic lecture
    Purnapatra, Sandip; Smalt, Nic; Bahmani, Keivan; Das, Priyanka; Yambay, David; Mohammadi, Amir. (2021) Face Liveness Detection Competition (LivDet-Face) - 2021. IEEE 2021 IEEE International Joint Conference on Biometrics (IJCB) , Shenzhen, China 2021-07-04 - 2021-07-07

2020

  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra; Busch, Christoph. (2020) Hierarchical Interpolation of Imagenet Features for cross-dataset Presentation Attack Detection. Artificial Intelligence Research Group INTAP 3rd International Conference on Intelligent Technologies and Applications , Gjøvik 2020-09-28 - 2020-09-30
  • Academic lecture
    Singh, Jag Mohan; Madhun, Ahmed Said Mahmoud; Li, Guoqiang; Ramachandra, Raghavendra. (2020) A Survey on Unknown Presentation Attack Detection for Fingerprint. Artificial Intelligence Research Group INTAP 3rd International Conference on Intelligent Technologies and Applications , Gjøvik 2020-09-28 - 2020-09-30
  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra; Bours, Patrick. (2020) Fusion of Texture and Optical Flow using Convolutional Neural Networks for Gender Classification in Videos. Artificial Intelligence Research Group INTAP 3rd International Conference on Intelligent Technologies and Applications , Gjøvik 2020-09-28 - 2020-09-30

2019

  • Academic lecture
    Ramachandra, Raghavendra; Singh, Jag Mohan; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2019) Face presentation attack detection using multi-classifier fusion of off-the-shelf deep features. IAPR Fourth International Conference on Computer Vision & Image Processing , Jaipur 2019-09-27 - 2019-09-29
  • Academic lecture
    Singh, Jag Mohan; Venkatesh, Sushma; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Detecting Finger-Vein Presentation Attacks Using 3D Shape and Diffuse Reflectance Decomposition. IEEE The 15th International Conference on SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS) , Sorrento 2019-11-26 - 2019-11-29
  • Academic lecture
    Singh, Jag Mohan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) Robust Morph-Detection at Automated Border Control Gate using Deep Decomposed 3D Shape and Diffuse Reflectance. IEEE The 15th International Conference on SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS) , Sorrento 2019-11-26 - 2019-11-29

2016

  • Lecture
    Vetrekar, Narayan; Ramachandra, Raghavendra; Soiru Gad, Rajendra. (2016) 'Extended Multi-spectral Face Recognition Across Two Different Age Groups:An Empirical Study'. Indian Conference on Computer Vision, Graphics and Image Processing (ICVGIP 2016) 2016-12-18 - 2016-12-22
  • Lecture
    Vetrekar, Narayan; Ramachandra, Raghavendra; Soiru Gad, Rajendra. (2016) 'Photometric Normalization Techniques For Extended Multi-spectral Face Recognition:A Comparative Analysis'. Workshop on Computer Vision Applications (WCVA 2016) in conjustion with Indian Conference on Computer Vision, Graphics and Image Processing (ICVGIP 2016) 2016-12-12 - 2016-12-15
  • Lecture
    Wasnik, Pankaj Shivdayal; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2016) 'Presentation Attack Detection in Face Biometric Systems Using Raw Sensor Data from Smartphones'. 12th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS -2016) 2016-11-28 - 2016-12-01
  • Lecture
    Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran B.; Cheikh, Faouzi Alaya; Busch, Christoph. (2016) 'Mutual Information Based Multispectral Image Fusion for Improved Face Recognition'. 12th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS -2016) 2016-11-28 - 2016-12-01
  • Lecture
    Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph. (2016) ‘Impact of Drug Abuse on Face Recognition Systems : A Preliminary Study’. 9th International Conference on Security of Information and Networks (SIN 2016) 2016-07-20 - 2016-07-22
  • Lecture
    Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘Learning Deeply Coupled Autoencoders for Smartphone Based Robust Periocular Verification'. 23rd IEEE International Conference in Image Processing (ICIP-2016) 2016-09-25 - 2016-09-28
  • Lecture
    Vetrekar, Narayan; Ramachandra, Raghavendra; Soiru Gad, Rajendra. (2016) ‘Low-cost Multi-Spectral Face Imaging for Robust Face Recognition’. IEEE Conference on Imaging Systems and Technologies (IST 2016) 2016-10-04 - 2016-10-06
  • Lecture
    Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph. (2016) On Comparison Score Fusion of Deep Autoencoders and Relaxed Collaborative Representation for Smartphone Based Accurate Periocular Verification. 19th IEEE International Conference on Information Fusion (FUSION 2016) 2016-07-05 - 2016-07-08
  • Lecture
    Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph. (2016) Ear Recognition after Ear Lobe Surgery: A Preliminary Study. IEEE International Conference on Identity, Security and Behavior Analysis (ISBA 2016) 2016-02-29 - 2016-03-02
  • Lecture
    Kumar, Vijay; Ramachandra, Raghavendra; Namboodiri, Anoop; Busch, Christoph. (2016) Robust Transgender Face Recognition: Approach based on Appearance and Therapy Factors. IEEE International Conference on Identity, Security and Behavior Analysis (ISBA 2016) 2016-02-29 - 2016-03-02
  • Lecture
    Ramachandra, Raghavendra; Raja, Kiran B.; Vemuri, Vinay Krishna; Kumari, Swetha; Gacon, Pierre; Krichen, Emine. (2016) Influence of Cataract Surgery on Iris Recognition: A Preliminary Study. In IAPR International Conference on Biometrics (ICB-2016) 2016-06-13 - 2016-06-16
  • Lecture
    Ramachandra, Raghavendra; Raja, Kiran; Marcel, Sebastian; Busch, Christoph. (2016) 'Face Presentation Attack Detection Across Spectrum using Time-Frequency Descriptors of Maximal Response in Laplacian Scale-Space'. 6th International Conference on Image Processing Theory, Tools and Applications (IPTA 2016) 2016-12-01 - 2016-12-04
  • Lecture
    Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph. (2016) ‘Detecting Morphed Face Images’. IEEE Eighth International Conference on Biometrics: Theory, Applications, and Systems (BTAS 2016) 2016-09-06 - 2016-09-09
  • Lecture
    Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘Presentation Attacks Detection using a Generalizable Statistical Approach for Periocular and Iris Systems’. 15th International Conference of the Biometrics Special Interest Group (BIOSIG-2016) 2016-09-21 - 2016-09-23
  • Lecture
    Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘A Low Cost Wrist Vein Sensor for Biometric Authentication’. IEEE Conference on Imaging Systems and Technologies (IST 2016) 2016-10-04 - 2016-10-06
  • Lecture
    Stokkenes, Martin; Ramachandra, Raghavendra; Raja, Kiran B.; Sigaard, Morten; Gomez-Barrero, Marta; Busch, Christoph. (2016) ‘Multi-Biometric Template Protection on Smartphones: An Approach based on Binarized Statistical Features and Bloom Filters’. 21th Iberoamerican Congress on Pattern Recognition (CIARP 2016) 2016-11-08 - 2016-11-11
  • Lecture
    Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘Hybrid Patterns for Presentation Attack Detection in Ocular Biometrics’. 9th International Conference on Security of Information and Networks (SIN 2016) 2016-07-20 - 2016-07-22
  • Lecture
    Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘Cross-Spectrum Periocular Authentication for NIR and Visible Images Using Bank of Filters’. IEEE Conference on Imaging Systems and Technologies (IST 2016) 2016-10-04 - 2016-10-06
  • Lecture
    Stokkenes, Martin; Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘Authentication protocols for biometric identity on smartphones - An overview’. 9th International Conference on Security of Information and Networks (SIN 2016) 2016-07-20 - 2016-07-22
  • Lecture
    Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2016) ‘Collaborative Representation of Deep Sparse Filtered Feature for Robust Verification of Smartphone Periocular Images'. 23rd IEEE International Conference in Image Processing (ICIP-2016) 2016-09-25 - 2016-09-28

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