Raghavendra Ramachandra

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.

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

2023

Busch, Christoph; Deravi, Farzin; Frings, Dinusha; Kindt, Els; Lessmann, Ralph; Nouak, Alexander; Salomon, Jean; Achcar, Mateus; Alonso-Fernandez, Fernando; Bachenheimer, Daniel; Bethell, David; Bigun, Josef; Brawley, Matthew; Brockmann, Guido; Cabello, Enrique; Campisi, Patrizio; Cepilovs, Aleksandrs; Clee, Miles; Cohen, Mickey. (2023) Facilitating free travel in the Schengen area—A position paper by the European Association for Biometrics. IET Biometrics. volum 12 (2).
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
Ramachandra, Raghavendra; Li, Hailin. (2023) 2023 IEEE/CVF Winter Conference on Applications of Computer Vision (WACV). IEEE Computer Society Digital Library. 2023. ISBN 978-1-6654-9346-8. 2020 IEEE Winter Conference on Applications of Computer Vision (WACV) (xx).
Academic anthology/Conference proceedings
Ramachandra, Raghavendra; Li, Hailin. (2023) Finger-NestNet: Interpretable Fingerphoto Verification on Smartphone using Deep Nested Residual Network. 2023 IEEE/CVF Winter Conference on Applications of Computer Vision (WACV).
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. volum 7 (1).
Academic article

2022

Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben; Fierrez, Julian. (2022) Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach. Information Fusion. volum 83-84.
Academic article
Banerjee, Ayan; Shivakumara, Palaiahnakote; Pal, Umapada; Ramachandra, Raghavendra; Liu, Cheng-Lin. (2022) A comprehensive scheme for tattoo text detection. Pattern Recognition Letters. volum 163.
Academic article
Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Nag, Sauradip; Pal, Umapada; Lu, Tong; Lopresti, Daniel. (2022) An Episodic Learning Network for Text Detection on Human Bodies in Sports Images. IEEE transactions on circuits and systems for video technology (Print). volum 32 (4).
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
Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Lu, Tong; Pal, Umapada; Antonacopoulos, Apostolos; Lu, Yue. (2022) A New Deep Wavefront Based Model for Text Localization in 3D Video. IEEE transactions on circuits and systems for video technology (Print). volum 32 (6).
Academic article
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Sarvaiya, Anjali; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2022) Unsupervised Denoising for Super-Resolution (UDSR) of Real-World Images. IEEE Access. volum 10.
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). volum 25 (1).
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. volum 126.
Academic article
Ramachandra, Raghavendra; Li, Guoqiang. (2022) Multimodality for Reliable Single Image Based Face Morphing Attack Detection. IEEE Access. volum 10.
Academic article
Shivakumara, Palaiahnakote; Chowdhury, Pinaki Nath; Pal, Umapada; Doermann, David; Ramachandra, Raghavendra; Lu, Tong; Blumenstein, Michael. (2022) A Knowledge Enforcement Network-Based Approach for Classifying a Photographer's Images. International Journal of Pattern Recognition and Artificial Intelligence. volum 36 (15).
Academic article
Vetrekar, Narayan; Prabhu, Anish K.; Naik, Aparajita; Ramachandra, Raghavendra; Raja, Kiran; Desai, Adavi R.; Gad, Rajendra S.. (2022) Collaborative representation of convolutional neural network features to detect artificial ripening of banana using multispectral imaging. Journal of Food Processing and Preservation. volum 46 (10).
Academic article
Xu, Ying; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2022) Adversarial Attacks on Face Recognition Systems. Handbook of Digital Face Manipulation and Detection.
Chapter

2021

Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg; Henniger, Olaf; Kindt, Els; Kolberg, Jascha; Nouak, Alexander; Raja, Kiran; Ramachandra, Raghavendra; Rathgeb, Christian; Salomon, Jean; Veldhuis, Raymond Nicolaas Johan. (2021) A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics. IET Biometrics. volum 11 (1).
Academic article
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. Document Analysis and Recognition – ICDAR 2021: 16th International Conference, Lausanne, Switzerland, September 5–10, 2021, Proceedings, Part II.
Academic chapter/article/Conference paper
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
Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling; Kirchbuchner, Florian; Ramachandra, Raghavendra; Kuijiper, Arjan. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. Lecture Notes in Computer Science (LNCS). volum 13017.
Academic article
Grimmer, Marcel; Ramachandra, Raghavendra; Busch, Christoph. (2021) Deep Face Age Progression: A Survey. IEEE Access. volum 9.
Academic article
Mandalapu, Hareesh; Busch, Christoph; Ramachandra, Raghavendra. (2021) Multilingual Voice Impersonation Dataset and Evaluation. Proceeding of the 3rd International Conference on Intelligent Technologies and Applications (INTAP).
Academic chapter/article/Conference paper
Mandalapu, Hareesh; Elbo, Thomas Møller; Ramachandra, Raghavendra; Busch, Christoph. (2021) Cross-lingual Speaker Verification: Evaluation On X-Vector Method. Proceeding of the 3rd International Conference on Intelligent Technologies and Applications (INTAP).
Academic chapter/article/Conference paper
Mandalapu, Hareesh; Reddy P N, Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva; Busch, Christoph. (2021) Audio-Visual Biometric Recognition and Presentation Attack Detection: A Comprehensive Survey. IEEE Access. volum 9.
Academic literature review
Mandalapu, Hareesh; Reddy, P. N. Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva; Busch, Christoph. (2021) Multilingual Audio-Visual Smartphone Dataset and Evaluation. IEEE Access. volum 9.
Academic article
Patel, Heena; Chudasama, Vishal; Prajapati, Kalpesh; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2021) ThermISRnet: An efficient thermal image super-resolution network. Optical Engineering: The Journal of SPIE. volum 60 (7).
Academic article
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2021) Direct Unsupervised Super-Resolution Using Generative Adversarial Network (DUS-GAN) for Real-World Data. IEEE Transactions on Image Processing. volum 30.
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. volum 3 (1).
Academic article
Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de; Gomez-Barrero, Marta; Scherhag, Ulrich; Fischer, Daniel; Venkatesh, Sushma; Singh, Jag Mohan; Li, Guoqiang; Bergeron, Loïc; Isadskiy, Sergey; Ramachandra, Raghavendra; Rathgeb, Christian; Frings, Dinusha; Seidel, Uwe; Knopjes, Fons. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security. volum 16.
Academic article
Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics. volum 10 (4).
Editorial
Vakhshiteh, Fatemeh; Nickabadi, Ahmad; Ramachandra, Raghavendra. (2021) Adversarial Attacks against Face Recognition: A Comprehensive Study. IEEE Access. volum 9.
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. volum 2 (3).
Academic article
Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition. IWBF 2021, Proceedings of 9th International Workshop on Biometrics and Forensics 2021; Rome, Italy, May 6-7, 2021.
Academic chapter/article/Conference paper
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. volum 3 (3).
Academic article

2020

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. volum 1129.
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
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. volum 8.
Academic article
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. 2020 IEEE 23rd International Conference on Information Fusion (FUSION).
Academic chapter/article/Conference paper
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. volum 104.
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. 2020 8th International Workshop on Biometrics and Forensics (IWBF).
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. volum 101.
Academic article
Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Kanchan, Swati; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong; Lopresti, Daniel. (2020) Graph attention network for detecting license plates in crowded street scenes. Pattern Recognition Letters. volum 140.
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). volum 12046.
Academic article
Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops 2020.
Academic chapter/article/Conference paper
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). volum 12046.
Academic article
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops 2020.
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. 2020 8th International Workshop on Biometrics and Forensics (IWBF).
Academic chapter/article/Conference paper
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. volum 1022.
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. volum 1148.
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
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

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). volum 11188 LNCS.
Academic article
Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Towards Reducing the Error Rates in Template Protection for Iris Recognition Using Custom Cuckoo Filters. 2019 IEEE 5th International Conference on Identity, Security, and Behavior Analysis (ISBA).
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. 2018 IEEE 9th International Conference on Biometrics Theory, Applications and Systems (BTAS 2018): Redondo Beach, California, USA 22-25 October 2018.
Academic chapter/article/Conference paper
Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2019) Subjective Evaluation of Media Consumer Vulnerability to Fake Audiovisual Content. Proceedings of the 11th International Conference on Quality of Multimedia Experience (QoMEX 2019).
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. Proceedings of the 2019 International Conference on Biometric Engineering and Applications (ICBEA 2019).
Academic chapter/article/Conference paper
Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Image Quality and Texture-Based Features for Reliable Textured Contact Lens Detection. 14th International Conference on Signal-Image Technology & Internet-Based Systems.
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. 2019 International Conference on Document Analysis and Recognition (ICDAR).
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. 2019 IEEE International Conference on Imaging Systems and Techniques (IST).
Academic chapter/article/Conference paper
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). volum 2019-.
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; 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. volum 19 (15).
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien; Busch, Christoph. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection. 2019 7th International Workshop on Biometrics and Forensics (IWBF).
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. 2019 IEEE 5th International Conference on Identity, Security, and Behavior Analysis (ISBA).
Academic chapter/article/Conference paper
Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features. 2018 IEEE 9th International Conference on Biometrics Theory, Applications and Systems (BTAS 2018): Redondo Beach, California, USA 22-25 October 2018.
Academic chapter/article/Conference paper
Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2019) Robust Algorithm for Multimodal Deception Detection. 2019 IEEE Conference on Multimedia Information Processing and Retrieval (MIPR).
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. 2019 IEEE Winter Applications of Computer Vision Workshops (WACVW).
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. 2019 Ninth International Conference on Image Processing Theory, Tools and Applications (IPTA).
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. 14th International Conference on Signal-Image Technology & Internet-Based Systems.
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. volum 2019-October.
Academic article
Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-spectral Imaging To Detect Artificial Ripening Of Banana: A Comprehensive Empirical Study. 2019 IEEE International Conference on Imaging Systems and Techniques (IST).
Academic chapter/article/Conference paper
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
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. 2018 IEEE 9th International Conference on Biometrics Theory, Applications and Systems (BTAS 2018): Redondo Beach, California, USA 22-25 October 2018.
Academic chapter/article/Conference paper

2018

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. volum 1024.
Academic article
Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2018) A Taxonomy of Audiovisual Fake Multimedia Content Creation Technology. 2018 IEEE Conference on Multimedia Information Processing and Retrieval (MIPR 2018).
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?. Proceedings of the 17th International Conference of the Biometrics Special Interest Group (BIOSIG 2018).
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. 2018 IEEE International Conference on Multimedia & Expo Workshops (ICMEW 2018).
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. 21st International Conference on Information Fusion (FUSION 2018).
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. 2018 International Conference on Biometrics (ICB).
Academic chapter/article/Conference paper
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. volum 83.
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) A low-cost Multi-Fingervein Verification System. 2018 IEEE International Conference on Imaging Systems and Techniques (IST).
Academic chapter/article/Conference paper
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. volum 1022.
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) Transgender Face Recognition with Off-the-shelf Pre-trained CNNs: A comprehensive study. 2018 International Workshop on Biometrics and Forensics (IWBF).
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. 21st International Conference on Information Fusion (FUSION 2018).
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. volum 2018-August.
Academic article
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. 2018 IEEE 4th International Conference on Identity, Security, and Behavior Analysis (ISBA).
Academic chapter/article/Conference paper
Singh, Jag Mohan; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra. (2018) Hessian-based Robust Ray-Tracing of Implicit Surfaces on GPU. SIGGRAPH 2018; International Conference on Computer Graphics and Interactive Techniques; Tokyo, Japan — December 04 - 07, 2018.
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
Thorsen, Tommy Arild Garden; Wasnik, Pankaj Shivdayal; Busch, Christoph; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2018) Assessing Face Image Quality with LSTMs. Norsk Informasjonssikkerhetskonferanse (NISK). volum 11.
Academic article
Vetrekar, Narayan; Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2018) Multi-spectral Imaging For Robust Ocular Biometrics. 2018 International Conference on Biometrics (ICB).
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. 21st International Conference on Information Fusion (FUSION 2018).
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. Proceedings of the 17th International Conference of the Biometrics Special Interest Group (BIOSIG 2018).
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). volum 11.
Academic article

2017

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. volum 91.
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. volum 61.
Academic article
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. 2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) (2017).
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. 2017 20th International Conference on Information Fusion.
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. 2017 IEEE International Joint Conference on Biometrics (IJCB).
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
Gomez-Barrero, Marta; Rathgeb, Christian; Li, Guoqiang; Ramachandra, Raghavendra; Galbally, Javier; Busch, Christoph. (2017) Multi-biometric template protection based on bloom filters. Information Fusion. volum 42.
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. 2017 12th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2017).
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection Methods for Face Recognition Systems: A Comprehensive Survey. ACM Computing Surveys. volum 50 (1).
Academic article
Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2017) ContlensNet: Robust Iris Contact Lens Detection Using Deep Convolutional Neural Networks. 2017 IEEE Winter Conference on Applications of Computer Vision (WACV).
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. 2016 Sixth International Conference on Image Processing Theory, Tools and Applications (IPTA).
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. 2017 IEEE International Conference on Identity, Security and Behavior Analysis (ISBA).
Academic chapter/article/Conference paper
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). volum 10270 LNCS.
Academic article
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. 2017 20th International Conference on Information Fusion.
Academic chapter/article/Conference paper
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). volum 2017-July.
Academic article
Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face morphing versus face averaging: Vulnerability and detection. 2017 IEEE International Joint Conference on Biometrics (IJCB).
Academic chapter/article/Conference paper
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). volum 2017-July.
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Bylappa Raja, Kiran; Busch, Christoph. (2017) Transferable deep convolutional neural network features for fingervein presentation attack detection. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
Academic chapter/article/Conference paper
Scherhag, Ulrich; Nautsch, Andreas; Rathgeb, Christian; Gomez-Barrero, Marta; Veldhuis, Raymond N.J.; Spreeuwers, Luuk; Schils, Maikel; Maltoni, Davide; Grother, Patrick; Marcel, Sebastien; Breithaupt, Ralph; Ramachandra, Raghavendra; Busch, Christoph. (2017) Biometric Systems under Morphing Attacks: Assessment of Morphing Techniques and Vulnerability Reporting. GI-Edition Lecture Notes in Informatics (LNI).
Academic article
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
Academic chapter/article/Conference paper
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Wild, Peter; Alonso-Fernandez, Fernando; Bigun, Josef; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Pereira, Tiago de Freitas; Marcel, Sebastien; Behera, Sushree Sangeeta; Gour, Mahesh; Kanhangad, Vivek. (2017) Cross-Eyed 2017: Cross-Spectral Iris/Periocular Recognition Competition. 2017 IEEE International Joint Conference on Biometrics (IJCB).
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
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). volum 10125 LNCS.
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. Proceedings of the 10th International Conference on Security of Information and Networks, SIN'17.
Chapter
Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, R.S.; Busch, Christoph. (2017) Extended Multi-spectral Imaging For Gender Classification Based On Image Set. Proceedings of the 10th International Conference on Security of Information and Networks, SIN'17.
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
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. SITIS 2016 The 12th International Conference on Signal-Image Technology & Internet-Based Systems; 28 November - 1 December 2016; Naples, Italy.
Academic chapter/article/Conference paper
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

2016

Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Biometric recognition of surgically altered periocular region: A comprehensive study. 2016 International Conference on Biometrics (ICB) - Proceedings 13-16 June 2016 Halmstad, Sweden.
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. 2016 IEEE International Conference on Image Processing(ICIP)-Proceedings.
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. Proceedings of the 19th International Conference on Information Fusion, Institute of Electrical and Electronics Engineers (IEEE).
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Weighted Comparison Score Fusion for Accurate Verification of Surgically Altered Periocular Region. Proceedings of the 19th International Conference on Information Fusion, Institute of Electrical and Electronics Engineers (IEEE).
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. 2016 IEEE International Conference on Imaging Systems and Techniques (IST).
Academic chapter/article/Conference paper
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Alonso-Fernandez, Fernando; Bigun, Josef; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Wild, Peter. (2016) Cross-Eyed - Cross-Spectral Iris/Periocular Recognition Database and Competition. GI-Edition Lecture Notes in Informatics (LNI). volum P-260.
Academic article
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. Proceedings of the 19th International Conference on Information Fusion, Institute of Electrical and Electronics Engineers (IEEE).
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. volum 2016-August.
Academic article
Vetrekar, N.T.; Ramachandra, Raghavendra; Gad, R.S.. (2016) Low-cost Multi-spectral Face Imaging For Robust Face Recognition. 2016 IEEE International Conference on Imaging Systems and Techniques (IST).
Academic chapter/article/Conference paper
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). volum 10481 LNCS.
Academic article

2015

Bylappa Raja, Kiran; Raghavendra, Rachamandra; Alaya Cheikh, Faouzi; Busch, Christoph. (2015) Evaluation of Fusion Approaches for Face Recognition using Light Field Cameras. 2015 Colour and Visual Computing Symposium (CVCS).
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Iris imaging in visible spectrum using white LED. 7th International Conference on Biometrics Theory, Applications and Systems (BTAS).
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. 7th International Conference on Biometrics Theory, Applications and Systems (BTAS).
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Time-Frequency Features of Laplacian Decomposition. SITIS 2015 - The 11th International Conference on Signal Image Technology & Internet System.
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. volum 10 (10).
Academic article
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Fusion of Face and Periocular Information for Improved Authentication on Smartphones. 18th International Conference on Information Fusion (Fusion 2015).
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. The 8th IAPR International Conference on Biometrics, ICB; May 19-22 2015, Phuket, Thailand.
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. volum 57.
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; Bylappa Raja, Kiran; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing. volum 24 (3).
Academic article
Raghavendra, Rachamandra; Avinash, Manasa; Marcel, Sebastien; Busch, Christoph. (2015) Finger vein liveness detection using motion magnification. 7th International Conference on Biometrics Theory, Applications and Systems (BTAS).
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Exploring dorsal finger vein pattern for robust person recognition. The 8th IAPR International Conference on Biometrics, ICB; May 19-22 2015, Phuket, Thailand.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Face Image Resolution Enhancement based on Weighted Fusion of Wavelet Decomposition. 18th International Conference on Information Fusion (Fusion 2015).
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Improved Face Recognition by Combining Information from Multiple Cameras in Automatic Border Control System. 12th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS); August 25-28, 2015; Karlsruhe, Germany.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation Attack Detection Algorithms for Finger Vein Biometrics: A Comprehensive Study. SITIS 2015 - The 11th International Conference on Signal Image Technology & Internet System.
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. volum 10 (3-4).
Academic article
Raghavendra, Rachamandra; Busch, Christoph. (2015) Texture based features for robust palmprint recognition: a comparative study. EURASIP Journal on Multimedia and Information Security. volum 5.
Academic article
Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) An efficient finger vein indexing scheme based on unsupervised clustering. 2015 IEEE International Conference on Identity, Security and Behavior Analysis (ISBA); 23 - 25 March 2015, Hong Kong.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) Hand Dorsal Vein Recognition: Sensor, Algorithms and Evaluation. IEEE International Conference on Imaging Systems and Techniques (IST); 16-18 September 2015; Macau, China.
Academic chapter/article/Conference paper
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). volum 9314.
Academic article
Surbiryala, Jayachander; Raghavendra, Rachamandra; Busch, Christoph. (2015) Finger vein indexing based on binary features. 2015 Colour and Visual Computing Symposium (CVCS).
Academic chapter/article/Conference paper
Tome, P.; Raghavendra, Rachamandra; Busch, Christoph; Tirunagari, Santosh; Poh, Norman; Shekar, B. H.; Gragnaniello, D.; Sansone, Carlo; Verdoliva, L.; Marcel, S.. (2015) The 1st Competition on Counter Measures to Finger Vein Spoofing Attacks. The 8th IAPR International Conference on Biometrics, ICB; May 19-22 2015, Phuket, Thailand.
Academic chapter/article/Conference paper

2014

Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2014) Binarized statistical features for improved iris and periocular recognition in visible spectrum. 2nd International Workshop on Biometrics and Forensics (IWBF2014); 27-28th March 2014, Valletta, Malta.
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. BIOMS 2014, IEEE Workshop on Biometric Measurements and Systems for Security and Medical Applications (BIOMS) Proceedings; 17-17 Oct. 2014, Rome.
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. Proceedings of the 7th International Conference on Security of Information and Networks SIN'14 ; September, 9-11 2014 Glasgow/UK.
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2014) Smartphone Authentication System Using Periocular Biometrics. International Conference of the Biometrics Special Interest Group (BIOSIG).
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 International Joint Conference on Biometrics (IJCB), 2014; Clearwater, Florida, USA, 29 September—2 October 2014.
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. 22nd International Conference on Pattern Recognition (ICPR); 24-28 Aug. 2014, Stockholm.
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 International Conference on Imaging Systems and Techniques (IST 20124); October 14-17, 2014; Santorini, Greece.
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. volum 47 (6).
Academic article
Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics. European Signal Processing Conference.
Academic article
Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics. 2014 Proceedings of the 22nd European Signal Processing Conference (EUSIPCO).
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 International Joint Conference on Biometrics (IJCB), 2014; Clearwater, Florida, USA, 29 September—2 October 2014.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2014) Robust palmprint verification using sparse representation of binarized statistical features: a comprehensive study. Proceedings of the 2nd ACM workshop on Information hiding and multimedia security.
Academic chapter/article/Conference paper

2013

Bylappa Raja, Kiran; Raghavendra, Rachamandra; Alaya Cheikh, Faouzi; Yang, Bian; Busch, Christoph. (2013) Robust iris recognition using light-field camera. 2013 Colour and Visual Computing Symposium (CVCS), 5th and 6th September, 2013, Gjøvik, Norway.
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 International Conference on Technologies for Homeland Security (HST);Waltham, MA, 12-14 Nov. 2013.
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. 16th International Conference on Information Fusion (FUSION 2013); 09 Jul-12 Jul 2013, Istanbul, Turkey.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Combining Iris and Periocular Recognition using Light Field Camera. Proceeding of the 2nd IAPR Asian Conference on Pattern Recognition (ACPR2013); November 5-8, 2013, Okinawa, Japan.
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. 18th International Conference on Digital Signal Processing (DSP 2013); 1-3 July 2013, Santorini, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) GUCLF: a new light field face database. 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications.
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. Proceedings of the 6th International Conference on Security of Information and Networks.
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. 2013 Ninth International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2013, Proceedings; 16-18 October 2013, Beijing, China.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Bylappa Raja, Kiran; Busch, Christoph. (2013) A New Perspective - Face Recognition with Light-Field Camera. Proceedings of International Conference on Biometrics (ICB); June 4-7, 2013, Madrid, SPAIN.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph; Yang, Bian. (2013) Scaling-Robust Fingerprint Verification with Smartphone Camera in Real-life Scenarios. Sixth International Conference on Biometrics: Theory, Applications and Systems(BTAS); September 29-October 2, 2013; Washington DC, USA.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2013) Robust “On-the-Fly” person identification using Sparse Representation. Proceedings of the IEEE International Conference on Multimedia and Expo Workshops (ICMEW 2013);July 15 to 19, 2013, San Jose, California, USA.
Academic chapter/article/Conference paper

2012

Li, Guoqiang; Yang, Bian; Raghavendra, Rachamandra; Busch, Christoph. (2012) Testing Mobile Phone Camera Based Fingerprint Recognition under Real-Life Scenarios. Norwegian Information Security Conference Norsk Informasjonssikkerhetskonferanse, NISK 2012; University of Nordland, Bodø; 19-21 November 2012.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra. (2012) PSO Based Framework for Weighted Feature Level Fusion of Face and Palmprint. Proceedings of the 2012 Eighth International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP); 18-20 July 2012; Piraeus-Athens, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra. (2012) Sparse Representation for Accurate Person Recognition Using Hand Vein Biometrics. Proceedings of the 2012 Eighth International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP); 18-20 July 2012; Piraeus-Athens, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2012) Accurate face detection in video based on likelihood assessment. Norwegian Information Security Conference Norsk Informasjonssikkerhetskonferanse, NISK 2012; University of Nordland, Bodø; 19-21 November 2012.
Academic chapter/article/Conference paper

Journal publications

Busch, Christoph; Deravi, Farzin; Frings, Dinusha; Kindt, Els; Lessmann, Ralph; Nouak, Alexander; Salomon, Jean; Achcar, Mateus; Alonso-Fernandez, Fernando; Bachenheimer, Daniel; Bethell, David; Bigun, Josef; Brawley, Matthew; Brockmann, Guido; Cabello, Enrique; Campisi, Patrizio; Cepilovs, Aleksandrs; Clee, Miles; Cohen, Mickey. (2023) Facilitating free travel in the Schengen area—A position paper by the European Association for Biometrics. IET Biometrics. volum 12 (2).
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
Vetrekar, Narayan; Ramachandra, Raghavendra; Gad, R.S.. (2023) Multilevel Fusion of Multispectral Images to Detect the Artificially Ripened Banana. IEEE Sensors Letters. volum 7 (1).
Academic article
Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben; Fierrez, Julian. (2022) Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach. Information Fusion. volum 83-84.
Academic article
Banerjee, Ayan; Shivakumara, Palaiahnakote; Pal, Umapada; Ramachandra, Raghavendra; Liu, Cheng-Lin. (2022) A comprehensive scheme for tattoo text detection. Pattern Recognition Letters. volum 163.
Academic article
Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Nag, Sauradip; Pal, Umapada; Lu, Tong; Lopresti, Daniel. (2022) An Episodic Learning Network for Text Detection on Human Bodies in Sports Images. IEEE transactions on circuits and systems for video technology (Print). volum 32 (4).
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
Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Lu, Tong; Pal, Umapada; Antonacopoulos, Apostolos; Lu, Yue. (2022) A New Deep Wavefront Based Model for Text Localization in 3D Video. IEEE transactions on circuits and systems for video technology (Print). volum 32 (6).
Academic article
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Sarvaiya, Anjali; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2022) Unsupervised Denoising for Super-Resolution (UDSR) of Real-World Images. IEEE Access. volum 10.
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). volum 25 (1).
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. volum 126.
Academic article
Ramachandra, Raghavendra; Li, Guoqiang. (2022) Multimodality for Reliable Single Image Based Face Morphing Attack Detection. IEEE Access. volum 10.
Academic article
Shivakumara, Palaiahnakote; Chowdhury, Pinaki Nath; Pal, Umapada; Doermann, David; Ramachandra, Raghavendra; Lu, Tong; Blumenstein, Michael. (2022) A Knowledge Enforcement Network-Based Approach for Classifying a Photographer's Images. International Journal of Pattern Recognition and Artificial Intelligence. volum 36 (15).
Academic article
Vetrekar, Narayan; Prabhu, Anish K.; Naik, Aparajita; Ramachandra, Raghavendra; Raja, Kiran; Desai, Adavi R.; Gad, Rajendra S.. (2022) Collaborative representation of convolutional neural network features to detect artificial ripening of banana using multispectral imaging. Journal of Food Processing and Preservation. volum 46 (10).
Academic article
Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg; Henniger, Olaf; Kindt, Els; Kolberg, Jascha; Nouak, Alexander; Raja, Kiran; Ramachandra, Raghavendra; Rathgeb, Christian; Salomon, Jean; Veldhuis, Raymond Nicolaas Johan. (2021) A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics. IET Biometrics. volum 11 (1).
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
Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling; Kirchbuchner, Florian; Ramachandra, Raghavendra; Kuijiper, Arjan. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. Lecture Notes in Computer Science (LNCS). volum 13017.
Academic article
Grimmer, Marcel; Ramachandra, Raghavendra; Busch, Christoph. (2021) Deep Face Age Progression: A Survey. IEEE Access. volum 9.
Academic article
Mandalapu, Hareesh; Reddy P N, Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva; Busch, Christoph. (2021) Audio-Visual Biometric Recognition and Presentation Attack Detection: A Comprehensive Survey. IEEE Access. volum 9.
Academic literature review
Mandalapu, Hareesh; Reddy, P. N. Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva; Busch, Christoph. (2021) Multilingual Audio-Visual Smartphone Dataset and Evaluation. IEEE Access. volum 9.
Academic article
Patel, Heena; Chudasama, Vishal; Prajapati, Kalpesh; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2021) ThermISRnet: An efficient thermal image super-resolution network. Optical Engineering: The Journal of SPIE. volum 60 (7).
Academic article
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2021) Direct Unsupervised Super-Resolution Using Generative Adversarial Network (DUS-GAN) for Real-World Data. IEEE Transactions on Image Processing. volum 30.
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. volum 3 (1).
Academic article
Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de; Gomez-Barrero, Marta; Scherhag, Ulrich; Fischer, Daniel; Venkatesh, Sushma; Singh, Jag Mohan; Li, Guoqiang; Bergeron, Loïc; Isadskiy, Sergey; Ramachandra, Raghavendra; Rathgeb, Christian; Frings, Dinusha; Seidel, Uwe; Knopjes, Fons. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security. volum 16.
Academic article
Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics. volum 10 (4).
Editorial
Vakhshiteh, Fatemeh; Nickabadi, Ahmad; Ramachandra, Raghavendra. (2021) Adversarial Attacks against Face Recognition: A Comprehensive Study. IEEE Access. volum 9.
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. volum 2 (3).
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. volum 3 (3).
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. volum 1129.
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
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. volum 8.
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. volum 104.
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. volum 101.
Academic article
Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Kanchan, Swati; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong; Lopresti, Daniel. (2020) Graph attention network for detecting license plates in crowded street scenes. Pattern Recognition Letters. volum 140.
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). volum 12046.
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). volum 12046.
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. volum 1022.
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. volum 1148.
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
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
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). volum 11188 LNCS.
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). volum 2019-.
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; 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. volum 19 (15).
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. volum 2019-October.
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
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. volum 1024.
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. volum 83.
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. volum 1022.
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. volum 2018-August.
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). volum 11.
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). volum 11.
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. volum 91.
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. volum 61.
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
Gomez-Barrero, Marta; Rathgeb, Christian; Li, Guoqiang; Ramachandra, Raghavendra; Galbally, Javier; Busch, Christoph. (2017) Multi-biometric template protection based on bloom filters. Information Fusion. volum 42.
Academic article
Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection Methods for Face Recognition Systems: A Comprehensive Survey. ACM Computing Surveys. volum 50 (1).
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). volum 10270 LNCS.
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). volum 2017-July.
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). volum 2017-July.
Academic article
Scherhag, Ulrich; Nautsch, Andreas; Rathgeb, Christian; Gomez-Barrero, Marta; Veldhuis, Raymond N.J.; Spreeuwers, Luuk; Schils, Maikel; Maltoni, Davide; Grother, Patrick; Marcel, Sebastien; Breithaupt, Ralph; Ramachandra, Raghavendra; Busch, Christoph. (2017) Biometric Systems under Morphing Attacks: Assessment of Morphing Techniques and Vulnerability Reporting. GI-Edition Lecture Notes in Informatics (LNI).
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). volum 10125 LNCS.
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
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Alonso-Fernandez, Fernando; Bigun, Josef; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Wild, Peter. (2016) Cross-Eyed - Cross-Spectral Iris/Periocular Recognition Database and Competition. GI-Edition Lecture Notes in Informatics (LNI). volum P-260.
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. volum 2016-August.
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). volum 10481 LNCS.
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. volum 10 (10).
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. volum 57.
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; Bylappa Raja, Kiran; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing. volum 24 (3).
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. volum 10 (3-4).
Academic article
Raghavendra, Rachamandra; Busch, Christoph. (2015) Texture based features for robust palmprint recognition: a comparative study. EURASIP Journal on Multimedia and Information Security. volum 5.
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). volum 9314.
Academic article
Raghavendra, Rachamandra; Busch, Christoph. (2014) Novel image fusion scheme based on dependency measure for robust multispectral palmprint recognition. Pattern Recognition. volum 47 (6).
Academic article
Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics. European Signal Processing Conference.
Academic article

Books

Ramachandra, Raghavendra; Li, Hailin. (2023) 2023 IEEE/CVF Winter Conference on Applications of Computer Vision (WACV). IEEE Computer Society Digital Library. 2023. ISBN 978-1-6654-9346-8. 2020 IEEE Winter Conference on Applications of Computer Vision (WACV) (xx).
Academic anthology/Conference proceedings

Part of book/report

Ramachandra, Raghavendra; Li, Hailin. (2023) Finger-NestNet: Interpretable Fingerphoto Verification on Smartphone using Deep Nested Residual Network. 2023 IEEE/CVF Winter Conference on Applications of Computer Vision (WACV).
Academic chapter/article/Conference paper
Xu, Ying; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2022) Adversarial Attacks on Face Recognition Systems. Handbook of Digital Face Manipulation and Detection.
Chapter
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. Document Analysis and Recognition – ICDAR 2021: 16th International Conference, Lausanne, Switzerland, September 5–10, 2021, Proceedings, Part II.
Academic chapter/article/Conference paper
Mandalapu, Hareesh; Busch, Christoph; Ramachandra, Raghavendra. (2021) Multilingual Voice Impersonation Dataset and Evaluation. Proceeding of the 3rd International Conference on Intelligent Technologies and Applications (INTAP).
Academic chapter/article/Conference paper
Mandalapu, Hareesh; Elbo, Thomas Møller; Ramachandra, Raghavendra; Busch, Christoph. (2021) Cross-lingual Speaker Verification: Evaluation On X-Vector Method. Proceeding of the 3rd International Conference on Intelligent Technologies and Applications (INTAP).
Academic chapter/article/Conference paper
Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition. IWBF 2021, Proceedings of 9th International Workshop on Biometrics and Forensics 2021; Rome, Italy, May 6-7, 2021.
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. 2020 IEEE 23rd International Conference on Information Fusion (FUSION).
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. 2020 8th International Workshop on Biometrics and Forensics (IWBF).
Academic chapter/article/Conference paper
Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops 2020.
Academic chapter/article/Conference paper
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops 2020.
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. 2020 8th International Workshop on Biometrics and Forensics (IWBF).
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. 2019 IEEE 5th International Conference on Identity, Security, and Behavior Analysis (ISBA).
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. 2018 IEEE 9th International Conference on Biometrics Theory, Applications and Systems (BTAS 2018): Redondo Beach, California, USA 22-25 October 2018.
Academic chapter/article/Conference paper
Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2019) Subjective Evaluation of Media Consumer Vulnerability to Fake Audiovisual Content. Proceedings of the 11th International Conference on Quality of Multimedia Experience (QoMEX 2019).
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. Proceedings of the 2019 International Conference on Biometric Engineering and Applications (ICBEA 2019).
Academic chapter/article/Conference paper
Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Image Quality and Texture-Based Features for Reliable Textured Contact Lens Detection. 14th International Conference on Signal-Image Technology & Internet-Based Systems.
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. 2019 International Conference on Document Analysis and Recognition (ICDAR).
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. 2019 IEEE International Conference on Imaging Systems and Techniques (IST).
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien; Busch, Christoph. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection. 2019 7th International Workshop on Biometrics and Forensics (IWBF).
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. 2019 IEEE 5th International Conference on Identity, Security, and Behavior Analysis (ISBA).
Academic chapter/article/Conference paper
Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features. 2018 IEEE 9th International Conference on Biometrics Theory, Applications and Systems (BTAS 2018): Redondo Beach, California, USA 22-25 October 2018.
Academic chapter/article/Conference paper
Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2019) Robust Algorithm for Multimodal Deception Detection. 2019 IEEE Conference on Multimedia Information Processing and Retrieval (MIPR).
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. 2019 IEEE Winter Applications of Computer Vision Workshops (WACVW).
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. 2019 Ninth International Conference on Image Processing Theory, Tools and Applications (IPTA).
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. 14th International Conference on Signal-Image Technology & Internet-Based Systems.
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. 2019 IEEE International Conference on Imaging Systems and Techniques (IST).
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. 2018 IEEE 9th International Conference on Biometrics Theory, Applications and Systems (BTAS 2018): Redondo Beach, California, USA 22-25 October 2018.
Academic chapter/article/Conference paper
Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2018) A Taxonomy of Audiovisual Fake Multimedia Content Creation Technology. 2018 IEEE Conference on Multimedia Information Processing and Retrieval (MIPR 2018).
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?. Proceedings of the 17th International Conference of the Biometrics Special Interest Group (BIOSIG 2018).
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. 2018 IEEE International Conference on Multimedia & Expo Workshops (ICMEW 2018).
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. 21st International Conference on Information Fusion (FUSION 2018).
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. 2018 International Conference on Biometrics (ICB).
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2018) A low-cost Multi-Fingervein Verification System. 2018 IEEE International Conference on Imaging Systems and Techniques (IST).
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. 2018 International Workshop on Biometrics and Forensics (IWBF).
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. 21st International Conference on Information Fusion (FUSION 2018).
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. 2018 IEEE 4th International Conference on Identity, Security, and Behavior Analysis (ISBA).
Academic chapter/article/Conference paper
Singh, Jag Mohan; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra. (2018) Hessian-based Robust Ray-Tracing of Implicit Surfaces on GPU. SIGGRAPH 2018; International Conference on Computer Graphics and Interactive Techniques; Tokyo, Japan — December 04 - 07, 2018.
Academic chapter/article/Conference paper
Vetrekar, Narayan; Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2018) Multi-spectral Imaging For Robust Ocular Biometrics. 2018 International Conference on Biometrics (ICB).
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. 21st International Conference on Information Fusion (FUSION 2018).
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. Proceedings of the 17th International Conference of the Biometrics Special Interest Group (BIOSIG 2018).
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. 2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) (2017).
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. 2017 20th International Conference on Information Fusion.
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. 2017 IEEE International Joint Conference on Biometrics (IJCB).
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. 2017 12th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2017).
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2017) ContlensNet: Robust Iris Contact Lens Detection Using Deep Convolutional Neural Networks. 2017 IEEE Winter Conference on Applications of Computer Vision (WACV).
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. 2016 Sixth International Conference on Image Processing Theory, Tools and Applications (IPTA).
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. 2017 IEEE International Conference on Identity, Security and Behavior Analysis (ISBA).
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. 2017 20th International Conference on Information Fusion.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Bylappa Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face morphing versus face averaging: Vulnerability and detection. 2017 IEEE International Joint Conference on Biometrics (IJCB).
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
Academic chapter/article/Conference paper
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Wild, Peter; Alonso-Fernandez, Fernando; Bigun, Josef; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Pereira, Tiago de Freitas; Marcel, Sebastien; Behera, Sushree Sangeeta; Gour, Mahesh; Kanhangad, Vivek. (2017) Cross-Eyed 2017: Cross-Spectral Iris/Periocular Recognition Competition. 2017 IEEE International Joint Conference on Biometrics (IJCB).
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
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. Proceedings of the 10th International Conference on Security of Information and Networks, SIN'17.
Chapter
Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, R.S.; Busch, Christoph. (2017) Extended Multi-spectral Imaging For Gender Classification Based On Image Set. Proceedings of the 10th International Conference on Security of Information and Networks, SIN'17.
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. 2017 5th International Workshop on Biometrics and Forensics (IWBF).
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. SITIS 2016 The 12th International Conference on Signal-Image Technology & Internet-Based Systems; 28 November - 1 December 2016; Naples, Italy.
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Biometric recognition of surgically altered periocular region: A comprehensive study. 2016 International Conference on Biometrics (ICB) - Proceedings 13-16 June 2016 Halmstad, Sweden.
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. 2016 IEEE International Conference on Image Processing(ICIP)-Proceedings.
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. Proceedings of the 19th International Conference on Information Fusion, Institute of Electrical and Electronics Engineers (IEEE).
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Ramachandra; Busch, Christoph. (2016) Weighted Comparison Score Fusion for Accurate Verification of Surgically Altered Periocular Region. Proceedings of the 19th International Conference on Information Fusion, Institute of Electrical and Electronics Engineers (IEEE).
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. 2016 IEEE International Conference on Imaging Systems and Techniques (IST).
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. Proceedings of the 19th International Conference on Information Fusion, Institute of Electrical and Electronics Engineers (IEEE).
Academic chapter/article/Conference paper
Vetrekar, N.T.; Ramachandra, Raghavendra; Gad, R.S.. (2016) Low-cost Multi-spectral Face Imaging For Robust Face Recognition. 2016 IEEE International Conference on Imaging Systems and Techniques (IST).
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. 2015 Colour and Visual Computing Symposium (CVCS).
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Iris imaging in visible spectrum using white LED. 7th International Conference on Biometrics Theory, Applications and Systems (BTAS).
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. 7th International Conference on Biometrics Theory, Applications and Systems (BTAS).
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Busch, Christoph. (2015) Time-Frequency Features of Laplacian Decomposition. SITIS 2015 - The 11th International Conference on Signal Image Technology & Internet System.
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. 18th International Conference on Information Fusion (Fusion 2015).
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. The 8th IAPR International Conference on Biometrics, ICB; May 19-22 2015, Phuket, Thailand.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Avinash, Manasa; Marcel, Sebastien; Busch, Christoph. (2015) Finger vein liveness detection using motion magnification. 7th International Conference on Biometrics Theory, Applications and Systems (BTAS).
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Exploring dorsal finger vein pattern for robust person recognition. The 8th IAPR International Conference on Biometrics, ICB; May 19-22 2015, Phuket, Thailand.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Face Image Resolution Enhancement based on Weighted Fusion of Wavelet Decomposition. 18th International Conference on Information Fusion (Fusion 2015).
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Improved Face Recognition by Combining Information from Multiple Cameras in Automatic Border Control System. 12th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS); August 25-28, 2015; Karlsruhe, Germany.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation Attack Detection Algorithms for Finger Vein Biometrics: A Comprehensive Study. SITIS 2015 - The 11th International Conference on Signal Image Technology & Internet System.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) An efficient finger vein indexing scheme based on unsupervised clustering. 2015 IEEE International Conference on Identity, Security and Behavior Analysis (ISBA); 23 - 25 March 2015, Hong Kong.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Surbiryala, Jayachander; Busch, Christoph. (2015) Hand Dorsal Vein Recognition: Sensor, Algorithms and Evaluation. IEEE International Conference on Imaging Systems and Techniques (IST); 16-18 September 2015; Macau, China.
Academic chapter/article/Conference paper
Surbiryala, Jayachander; Raghavendra, Rachamandra; Busch, Christoph. (2015) Finger vein indexing based on binary features. 2015 Colour and Visual Computing Symposium (CVCS).
Academic chapter/article/Conference paper
Tome, P.; Raghavendra, Rachamandra; Busch, Christoph; Tirunagari, Santosh; Poh, Norman; Shekar, B. H.; Gragnaniello, D.; Sansone, Carlo; Verdoliva, L.; Marcel, S.. (2015) The 1st Competition on Counter Measures to Finger Vein Spoofing Attacks. The 8th IAPR International Conference on Biometrics, ICB; May 19-22 2015, Phuket, Thailand.
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. 2nd International Workshop on Biometrics and Forensics (IWBF2014); 27-28th March 2014, Valletta, Malta.
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. BIOMS 2014, IEEE Workshop on Biometric Measurements and Systems for Security and Medical Applications (BIOMS) Proceedings; 17-17 Oct. 2014, Rome.
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. Proceedings of the 7th International Conference on Security of Information and Networks SIN'14 ; September, 9-11 2014 Glasgow/UK.
Academic chapter/article/Conference paper
Bylappa Raja, Kiran; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2014) Smartphone Authentication System Using Periocular Biometrics. International Conference of the Biometrics Special Interest Group (BIOSIG).
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 International Joint Conference on Biometrics (IJCB), 2014; Clearwater, Florida, USA, 29 September—2 October 2014.
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. 22nd International Conference on Pattern Recognition (ICPR); 24-28 Aug. 2014, Stockholm.
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 International Conference on Imaging Systems and Techniques (IST 20124); October 14-17, 2014; Santorini, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2014) Presentation attack detection algorithm for face and iris biometrics. 2014 Proceedings of the 22nd European Signal Processing Conference (EUSIPCO).
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 International Joint Conference on Biometrics (IJCB), 2014; Clearwater, Florida, USA, 29 September—2 October 2014.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph. (2014) Robust palmprint verification using sparse representation of binarized statistical features: a comprehensive study. Proceedings of the 2nd ACM workshop on Information hiding and multimedia security.
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. 2013 Colour and Visual Computing Symposium (CVCS), 5th and 6th September, 2013, Gjøvik, Norway.
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 International Conference on Technologies for Homeland Security (HST);Waltham, MA, 12-14 Nov. 2013.
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. 16th International Conference on Information Fusion (FUSION 2013); 09 Jul-12 Jul 2013, Istanbul, Turkey.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) Combining Iris and Periocular Recognition using Light Field Camera. Proceeding of the 2nd IAPR Asian Conference on Pattern Recognition (ACPR2013); November 5-8, 2013, Okinawa, Japan.
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. 18th International Conference on Digital Signal Processing (DSP 2013); 1-3 July 2013, Santorini, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Bylappa Raja, Kiran; Yang, Bian; Busch, Christoph. (2013) GUCLF: a new light field face database. 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications.
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. Proceedings of the 6th International Conference on Security of Information and Networks.
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. 2013 Ninth International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2013, Proceedings; 16-18 October 2013, Beijing, China.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Bylappa Raja, Kiran; Busch, Christoph. (2013) A New Perspective - Face Recognition with Light-Field Camera. Proceedings of International Conference on Biometrics (ICB); June 4-7, 2013, Madrid, SPAIN.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Busch, Christoph; Yang, Bian. (2013) Scaling-Robust Fingerprint Verification with Smartphone Camera in Real-life Scenarios. Sixth International Conference on Biometrics: Theory, Applications and Systems(BTAS); September 29-October 2, 2013; Washington DC, USA.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2013) Robust “On-the-Fly” person identification using Sparse Representation. Proceedings of the IEEE International Conference on Multimedia and Expo Workshops (ICMEW 2013);July 15 to 19, 2013, San Jose, California, USA.
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. Norwegian Information Security Conference Norsk Informasjonssikkerhetskonferanse, NISK 2012; University of Nordland, Bodø; 19-21 November 2012.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra. (2012) PSO Based Framework for Weighted Feature Level Fusion of Face and Palmprint. Proceedings of the 2012 Eighth International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP); 18-20 July 2012; Piraeus-Athens, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra. (2012) Sparse Representation for Accurate Person Recognition Using Hand Vein Biometrics. Proceedings of the 2012 Eighth International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP); 18-20 July 2012; Piraeus-Athens, Greece.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Busch, Christoph. (2012) Accurate face detection in video based on likelihood assessment. Norwegian Information Security Conference Norsk Informasjonssikkerhetskonferanse, NISK 2012; University of Nordland, Bodø; 19-21 November 2012.
Academic chapter/article/Conference paper

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