Kiran Bylappa Raja

About

Kiran Raja is a Professor at the Department of Computer Science at NTNU. He received his MSc in Computer Science (Université Jean Monnet, France and NTNU, Norway) and his PhD in Computer Science from NTNU, Norway. He was awarded as an excellent teaching practitioner at NTNU for his focus on active student learning in his teaching activities.

He is a member of ColourLab and the Norwegian Biometrics Laboratory. His research interests span biometrics, machine learning, and generative AI, with applications in face recognition, medical imaging, and digital forensics. He has co-authored several scientific publications and actively contributes to international standards, regulations and collaborations in biometric technologies.

Research Interests

Biometrics - face, iris and fingerprint recognition
Iris recognition in the near-infrared (NIR) and visible spectrum
Explainability and Interpretability in AI
AI for Wireless Capsule Endoscopy
Attack Generation and Detection for Face Recognition
Adversarial Attack Generation and Detection for Medical Imaging

Recent Projects

2025-2027 - Project leader, "CapsTrain - Making Wireless Capsule Endoscopy Clinic Ready - Training And Educating Next Generation Researchers", project funded by The Directorate for Higher Education and Skills, Norway. Total budget NOK 12 000 000
2024-2027 - Work Package Leader, PopEye (‘robust Privacy-preserving biOmetric technologies for Passengers’ identification and verification at EU external borders maximising the accuracY, reliability and throughput of the rEcognition’), Horizon Project funded by the European Union (Grant agreement number - 101168317). Total budget Euros 3 212 589,63
2022-2026 Project co-PI, CapsNetwork - International Network for Capsule Imaging in Endoscopy. Project funded the Research Council of Norway. Total budget NOK 12 000 000
2021-2024 Work Package Leader, iMARS - image manipulation attack resolving solutions, Project funded by European Union’s Horizon 2020 research and innovation programme under grant agreement No 883356
2019-2021 Work Package Leader, Evaluation and improvement of eu-LISA synthetic biometric datasets, Project funded by the European Union Agency for the Operational Management of Large-Scale IT Systems in the Area of Freedom, Security and Justice (eu-LISA)
2019-2020 Work Package Leader, Vulnerability Assessment and State-of-Art in Morphing (SOTAMD), Project funded by the Directorate-General Migration and Home Affairs, European Commission

Professional Services

IEEE Section Chair - Norway (2023-)
Publications chair, 2025 International Workshop on Biometrics and Forensics (IWBF-2025), Apr 2025, Munich
General chair, 2024 International Workshop on Biometrics and Forensics (IWBF 2024), Apr 2024, Twente
Publications chair, 2023 International Joint Conference on Biometrics (IJCB 2023), Sep 2023, Lubljana
Chair Academia Special Interest Group - European Association for Biometrics (EAB- https://eab.org/), 2020 - Till Date
Publications chair, 2021 International Joint Conference on Biometrics (IJCB 2021), Aug. 4-7, 2021, Shenzhen, China
Program co-chair, IEEE Biometrics Special Interest Group (BIOSIG) - 2020 - Till Date
Organizing chair, 2020 - Workshop on ”Deepfakes and Presentation Attacks in Biometrics (Deep-PAB)”, Colorado, USA
Organizing chair, IWBF 2020 - 8th IAPR International Workshop on Biometrics and Forensics (IWBF2020), Porto, Portugal.
Publications chair, 10th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS) - 2019
Organizing chair - Special session - ”Generalizability and Adaptability in Biometrics” in 10th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS) - 2019, Florida, USA
Organizing chair - Special session - ”Information Fusion in Multi-Biometrics and Forensics” in International Conference on Information Fusion (FUSION-2019, FUSION-2020)
Organizer and Chair of special session on image and video manipulation attacks in IEEE 9th International Conference on Biometrics: Theory, Applications, and Systems (BTAS 2018), Oct 22-25, Los Angeles, USA

Research

Kiran Raja works on biometrics, generative AI, medical imaging, and explainable machine learning for various applications. His research advances secure and trustworthy biometric systems through explainable quality assessment, morphing attack detection, and template protection. He explores generative AI, including GANs and diffusion models, for both enhancing medical imaging, such as unsupervised learning for endoscopic data and reflection removal. His research also addresses security challenges like face morphing and manipulation attack detection, Deepfake detection and adversarial attack detection. He actively contributes to advancing scientific knowledge, developing practical solutions, and shaping international standards in biometric technologies.

Publications

Kiran Raja’s research in biometrics focuses on developing secure, reliable, and privacy-preserving recognition systems. He has contributed extensively to iris, periocular, and face biometrics, with emphasis on template protection, cancelable biometrics, and mobile authentication. His recent work includes advancing morphing attack detection, developing robust feature representations, and integrating deep learning with traditional biometric pipelines.

In medical imaging, he applies advanced computer vision and generative AI techniques to improve diagnostic image quality and analysis. His work includes removing specular reflections in endoscopic imagery, applying GAN-based super-resolution to capsule endoscopy, and leveraging diffusion models for enhancing medical image reconstruction. These methods improve visualisation for clinical experts and support automated decision-making, thereby advancing the reliability of AI-driven healthcare tools.

He has been at the forefront of explainability in biometrics and AI-driven decision systems. His research introduces methods for pixel-level image quality assessment in face recognition, enabling systems to provide interpretable feedback on recognition performance. By integrating explainable quality measures into biometric pipelines, he addresses transparency and trust-critical factors for the deployment of AI in sensitive domains like border control and digital forensics. His recent works in the domain of explainability for many applications using computer vision and machine learning have resulted in newer approaches.

2025

Klefstad, Bjørn; Sandstrak, Grethe; Styve, Arne Gerhard; Raja, Kiran. (2025) Redesigning Computer Science Programs for Next Generation - Perceptions Versus Experiences. IEEE Global Engineering Education Conference, EDUCON
Academic article
Zarei, Amir; Hassanpour, Ahmad; Raja, Kiran. (2025) On Privacy, Accuracy, and Fairness Trade-offs in Facial Recognition. IEEE Access
Academic article
Xu, Ying; Raja, Kiran; Pedersen, Marius. (2025) Generalising Deepfake Detection: Towards Robust, Interpretable and Fair Models. NTNU Norges teknisk-naturvitenskapelige universitet NTNU Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Albaluchi, Yousaf Mohammad Yaqoob; Fu, Biying; Damer, Naser; Ramachandra, Raghavendra; Raja, Kiran. (2025) UAV-based person re-identification: A survey of UAV datasets, approaches, and challenges. Computer Vision and Image Understanding
Academic article
Davis, Josh P.; Robertson, David J.; Jenkins, Ryan E.; Ibsen, Mathias; Nichols, Robert; Babbs, Martha. (2025) The Super-Recogniser Advantage Extends to the Detection of Digitally Manipulated Faces. Applied Cognitive Psychology
Academic article
Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph Günther. (2025) SynMorph: Generating Synthetic Face Morphing Dataset With Mated Samples. IEEE Access
Academic article
Shagdar, Zolbayar; Farmen, Anette Huuse; Amirshahi, Seyed Ali; Raja, Kiran. (2025) A Survey on Computer Vision-Based Automatic Assessment of Stroke and Facial Palsy. IEEE Access
Academic article

2024

Xu, Ying; Terhorst, Philipp; Pedersen, Marius; Raja, Kiran Bylappa. (2024) Analyzing Fairness in Deepfake Detection With Massively Annotated Databases. IEEE Transactions on Technology and Society
Academic article
Hassanpour, Ahmad; Jamalbafrani, Fatemeh; Yang, Bian; Raja, Kiran; Veldhuis, Raymond Nicolaas Johan; Fierrez, Julian. (2024) E2F-Net: Eyes-to-face inpainting via StyleGAN latent space. Pattern Recognition
Academic article
Joseph, Nirmal; George, Sudhish N; Ameer, P.M.; Raja, Kiran. (2024) MedDefend: Securing Medical IoT with Adaptive Noise Reduction Based Adversarial Detection. IEEE Internet of Things Journal
Academic article
Kabbani, Wassim Hassan; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Radial Distortion in Face Images: Detection and Impact. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
Academic anthology/Conference proceedings
Sandstrak, Grethe; Klefstad, Bjørn; Styve, Arne Gerhard; Raja, Kiran Bylappa. (2024) Analyzing Pedagogic Practice and Assessments in a Cross-Campus Programming Course. IEEE Transactions on Education
Academic article
Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph Günther. (2024) Generalized Single-Image-Based Morphing Attack Detection Using Deep Representations from Vision Transformer. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Academic article
Chandaliya, Praveen Kumar; Raja, Kiran Bylappa; Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Synthetic Ethnicity Alteration for Diversifying Face Datasets - Investigating Recognition and Quality. IEEE International Workshop on Information Forensics and Security (WIFS)
Academic article
Arıcan, Tuğçe; Veldhuis, Raymond Nicolaas Johan; Spreeuwers, Luuk; Bergeron, Loic Kevin; Busch, Christoph; Jalilian, Ehsaneddin. (2024) A Comparative Study of Cross-Device Finger Vein Recognition Using Classical and Deep Learning Approaches. IET Biometrics
Academic article
Gupta, Sandeep; Raja, Kiran; Passerone, Roberto. (2024) Visual Prompt Engineering for Enhancing Facial Recognition Systems Robustness against Evasion Attacks. IEEE Access
Academic article
Raj, M.S. Subodh; George, Sudhish N.; Raja, Kiran. (2024) Leveraging spatio-temporal features using graph neural networks for human activity recognition. Pattern Recognition
Academic article
Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2024) Demographic Variability in Face Image Quality Measures.
Academic chapter/article/Conference paper
Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2024) Eye Sclera for Fair Face Image Quality Assessment.
Academic chapter/article/Conference paper
Kessler, Roman; Raja, Kiran; Tapia, Juan; Busch, Christoph. (2024) Towards minimizing efforts for Morphing Attacks—Deep embeddings for morphing pair selection and improved Morphing Attack Detection. PLOS ONE
Academic article
Rajput, Amitesh Singh; Agarwal, Arnav; Raja, Kiran. (2024) A robust multi-key authority system for privacy-preserving distribution and access control of healthcare data. Computer Communications
Academic article
Vats, Anuja; Volgyes, David; Vermeer, Martijn; Pedersen, Marius; Raja, Kiran; Fantin, Daniele S. M.. (2024) Terrain-Informed Self-Supervised Learning: Enhancing Building Footprint Extraction From LiDAR Data With Limited Annotations. IEEE Transactions on Geoscience and Remote Sensing
Academic article
Liu, Xinwei; Raja, Kiran; Wang, Renfang; Qiu, Hong; Wu, Hucheng; Sun, Dechao. (2024) A Latent Fingerprint in the Wild Database. IEEE Transactions on Information Forensics and Security
Academic article

2023

Terhorst, Philipp; Huber, Marco; Damer, Naser; Kirchbuchner, Florian; Raja, Kiran; Kuijper, Arjan. (2023) Pixel-Level Face Image Quality Assessment for Explainable Face Recognition. IEEE Transactions on Biometrics, Behavior, and Identity Science
Academic article
Gupta, Sandeep; Maple, Carsten; Crispo, Bruno; Raja, Kiran; Yautsiukhin, Artsiom; Martinelli, Fabio. (2023) A survey of human-computer interaction (HCI) & natural habits-based behavioural biometric modalities for user recognition schemes. Pattern Recognition
Academic article
Kabbani, Wassim Hassan; Raja, Kiran Bylappa; Busch, Christoph Günther. (2023) Robust Sclera Segmentation for Skin-Tone Agnostic Face Image Quality Assessment. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
Academic anthology/Conference proceedings
Vaghela, Hiren; Sarvaiya, Anjali; Premlani, Pranav; Agarwal, Abhishek; Upla, Kishor; Raja, Kiran Bylappa. (2023) DCAN:DenseNet with Channel Attention Network for Super-resolution of Wireless Capsule Endoscopy.
Academic chapter/article/Conference paper
Joseph, Jithin; George, Sudhish N.; Raja, Kiran. (2023) Parameter-Free Matrix Decomposition for Specular Reflections Removal in Endoscopic Images. IEEE Journal of Translational Engineering in Health and Medicine
Academic article
Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph Günther. (2023) Morph-PIPE: Plugging in Identity Prior to Enhance Face Morphing Attack Based on Diffusion Model. NIKT: Norsk IKT-konferanse for forskning og utdanning
Academic article
Xu, Ying; Raja, Kiran Bylappa; Verdoliva, L.; Pedersen, Marius. (2023) Learning Pairwise Interaction for Generalizable DeepFake Detection.
Academic chapter/article/Conference paper
Tapia, Juan E.; Busch, Christoph Günther; Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2023) Simulating Print/Scan Textures for Morphing Attack Detection.
Academic chapter/article/Conference paper
Veldhuis, Raymond Nicolaas Johan; Raja, Kiran. (2023) On the Relation Between ROC and CMC. IEEE Transactions on Biometrics, Behavior, and Identity Science
Academic article

2022

Xu, Ying; Raja, Kiran; Pedersen, Marius. (2022) Supervised Contrastive Learning for Generalizable and Explainable DeepFakes Detection.
Academic chapter/article/Conference paper
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
Vats, Anuja; Raja, Kiran; Pedersen, Marius; Mohammed, Ahmed Kedir. (2022) Multichannel Residual Cues for Fine-Grained Classification in Wireless Capsule Endoscopy. IEEE Access
Academic article
Gupta, Sandeep; Raja, Kiran; Martinelli, Fabio; Crispo, Bruno. (2022) RIDERAUTH: A cancelable touch-signature based rider authentication scheme for driverless taxis. Journal of Information Security and Applications
Academic article
Borj, Parisa Rezaee; Raja, Kiran; Bours, Patrick Adrianus. (2022) Online grooming detection: A comprehensive survey of child exploitation in chat logs. Knowledge-Based Systems
Academic article
Raja, Kiran; Mudgalgundurao, Raghavendra; Busch, Christoph. (2022) Towards better and unlinkable protected biometric templates using label-assisted discrete hashing. IET Biometrics
Academic article
Hassanpour, Ahmad; Daryani, Amir Etefaghi; Mirmahdi, Mahdieh; Raja, Kiran; Yang, Bian; Busch, Christoph. (2022) E2F-GAN: Eyes-to-Face Inpainting via Edge-Aware Coarse-to-Fine GANs. IEEE Access
Academic article
Raja, Kiran; Gupta, Gourav; Venkatesh, Sushma; Ramachandra, Raghavendra; Busch, Christoph. (2022) Towards generalized morphing attack detection by learning residuals. Image and Vision Computing
Academic article
Xu, Ying; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2022) Adversarial Attacks on Face Recognition Systems.
Chapter
Rouhani, Majid; Olsø, Atle; Styve, Arne; Raja, Kiran. (2022) An Experience Report on Transitioning to Blended Learning and Portfolio-assessment: a Cross-campus Course in Programming. IEEE Global Engineering Education Conference, EDUCON
Academic article
Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben. (2022) Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach. Information Fusion
Academic article

2021

Patel, Heena; Chudasama, Vishal; Prajapati, Kalpesh; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) ThermISRnet: An efficient thermal image super-resolution network. Optical Engineering: The Journal of SPIE
Academic article
Brömme, Arslan; Busch, Christoph; Damer, Naser; Dantcheva, Antitza; Gomez-Barrero, Marta; Raja, Kiran. (2021) Proceedings of the 20th International Conference of the Biometrics Special Interest Group (BIOSIG2021). Gesellschaft für Informatik Gesellschaft für Informatik
Academic anthology/Conference proceedings
Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2021) Face Morphing Attack Generation and Detection: A Comprehensive Survey. IEEE Transactions on Technology and Society
Academic article
Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security
Academic article
Zhang, Haoyu; Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Damer, Naser; Busch, Christoph. (2021) MIPGAN—Generating Strong and High Quality Morphing Attacks Using Identity Prior Driven GAN. IEEE Transactions on Biometrics, Behavior, and Identity Science
Academic article
Leiknes, Halgeir; Svendsen, Marit; Osen, Ottar; Raja, Kiran; Gebremedhin, Alemayehu; Stuen, Ina Merete. (2021) Fremtidens teknologistudier (FTS), grupperapport: A1 - Bachelor i ingeniørfag. NTNU NTNU
Report
Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition.
Academic chapter/article/Conference paper
Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg. (2021) A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics. IET Biometrics
Academic article
Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. Lecture Notes in Computer Science (LNCS)
Academic article
Borj, Parisa Rezaee; Raja, Kiran; Bours, Patrick. (2021) Detecting Sexual Predatory Chats by Perturbed Data and Balanced Ensembles.
Academic chapter/article/Conference paper
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) Direct Unsupervised Super-Resolution Using Generative Adversarial Network (DUS-GAN) for Real-World Data. IEEE Transactions on Image Processing
Academic article
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
Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics
Editorial

2020

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
Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network.
Academic chapter/article/Conference paper
Boutros, Fadi; Damer, Naser; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Periocular Biometrics in Head-Mounted Displays: A Sample Selection Approach for Better Recognition.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2020) Collaborative representation of blur invariant deep sparse features for periocular recognition from smartphones. Image and Vision Computing
Academic article
Boutros, Fadi; Damer, Naser; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Fusing Iris and Periocular Region for User Verification in Head Mounted Displays.
Academic chapter/article/Conference paper
Rai, Aashish; Chudasama, Vishal; Upla, Kishor; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2020) ComSupResNet: A Compact Super-Resolution Network for Low-Resolution Face Images.
Academic chapter/article/Conference paper
Boutros, Fadi; Damer, Naser; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Iris and periocular biometrics for head mounted displays: Segmentation, recognition, and synthetic data generation. Image and Vision Computing
Academic article
Boutros, Fadi; Damer, Naser; Fang, Meiling; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Compact Models for Periocular Verification through Knowledge Distillation.
Academic chapter/article/Conference paper
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network.
Academic chapter/article/Conference paper
Brömme, Arslan; Busch, Christoph; Dantcheva, Antitza; Raja, Kiran; Rathgeb, Christian; Uhl, Andreas. (2020) Proceedings of the 19th International Conference of the Biometrics Special Interest Group (BIOSIG 2020). Gesellschaft für Informatik Gesellschaft für Informatik
Academic anthology/Conference proceedings
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
Auksorius, Egidijus; Raja, Kiran; Topcu, Berkay; Ramachandra, Raghavendra; Busch, Christoph; Boccara, Claude A. (2020) Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging. IEEE Access
Academic article
Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) Fused Spectral Features in Kernel Weighted Collaborative Representation for Gender Classification Using Ocular Images. Advances in Intelligent Systems and Computing
Academic article

2019

Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-Spectral Imaging for Artificial Ripened Banana Detection. European Workshop on Visual Information Processing
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2019) Towards making Morphing Attack Detection robust using hybrid Scale-Space Colour Texture Features.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2019) An Empirical Evaluation of Deep Architectures on Generalization of Smartphone-based Face Image Quality Assessment.
Academic chapter/article/Conference paper
Sanfilippo, Filippo; Raja, Kiran. (2019) A Multi-Sensor System for Enhancing Situational Awareness and Stress Management for People with ASD in the Workplace and in Everyday Life.
Academic chapter/article/Conference paper
Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2019) A New Multi-spectral Iris Acquisition Sensor for Biometric Verification and Presentation Attack Detection.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2019) Towards Reducing the Error Rates in Template Protection for Iris Recognition Using Custom Cuckoo Filters.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2019) Anchored kernel hashing for cancelable template protection for cross-spectral periocular data. Lecture Notes in Computer Science (LNCS)
Academic article
Raja, Kiran; Ramachandra, Raghavendra; Auksorius, Egidijus; Busch, Christoph. (2019) Subsurface and layer intertwined template protection using inherent properties of full-field optical coherence tomography fingerprint imaging. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Academic article
Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features.
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.
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.
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.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma; Busch, Christoph. (2019) Design and Development of Low-Cost Sensor to Capture Ventral and Dorsal Finger Vein for Biometric Authentication. IEEE Sensors Journal
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection.
Academic chapter/article/Conference paper
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
Borj, Parisa Rezaee; Raja, Kiran Bylappa; Bours, Patrick. (2019) On Preprocessing the Data for Improving Sexual Predator Detection.
Academic chapter/article/Conference paper
Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Gad, Rajendra S. (2019) Detecting Glass in Ocular Region Based on Grassmann Manifold Projection Metric Learning by Exploring Spectral Imaging.
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
Raja, Kiran; Raghavendra, R.; Auksorius, Egidijus; Boccara, Claude; Busch, Christoph. (2019) Two Stream Convolutional Neural Network for Full Field Optical Coherence Tomography Fingerprint Recognition. IEEE Xplore Digital Library
Academic article

2018

Raja, Kiran B.; Ramachandra, Raghavendra; Busch, Christoph. (2018) Manifold-Structure Preserving Biometric Templates - A Preliminary Study On Fully Cancelable Smartphone Biometric Templates.
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.
Academic chapter/article/Conference paper
Khodabakhsh, Ali; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Wasnik, Pankaj Shivdayal; Busch, Christoph. (2018) Fake Face Detection Methods: Can They Be Generalized?.
Academic chapter/article/Conference paper
Vetrekar, Narayan; Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2018) Multi-spectral Imaging For Robust Ocular Biometrics.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2018) Detecting Face Morphing Attacks with Collaborative Representation of Steerable Features. Advances in Intelligent Systems and Computing
Academic article
Thorsen, Tommy Arild Garden; Wasnik, Pankaj Shivdayal; Busch, Christoph; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2018) Assessing Face Image Quality with LSTMs. Norsk Informasjonssikkerhetskonferanse (NISK)
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2018) A low-cost Multi-Fingervein Verification System.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2018) Towards a Cancelable Template Protection Across NIR to Visible Spectrum Using Anchored Kernel Hashing – A Study on Cross-Spectral Periocular Images. Advances in Intelligent Systems and Computing
Academic article
Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2018) Improved ear verification after surgery - An approach based on collaborative representation of locally competitive features. Pattern Recognition
Academic article
Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2018) Subjective Logic Based Score Level Fusion: Combining Faces and Fingerprints.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2018) Transgender Face Recognition with Off-the-shelf Pre-trained CNNs: A comprehensive study.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma; Hegde, Sneha; Dandappanavar, Shreedhar; Busch, Christoph. (2018) Verifying the Newborns without Infection Risks Using Contactless Palmprints.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Wasnik, Pankaj Shivdayal; Stokkenes, Martin; Busch, Christoph. (2018) Fusion of Multi-Scale Local Phase Quantization Features for Face Presentation Attack Detection.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Vetrekar, Narayan; Raja, Kiran Bylappa; Gad, Rajendra S; Busch, Christoph. (2018) Robust gender classification using extended multi-spectral imaging by exploring the spectral angle mapper.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Vetrekar, Narayan; Raja, Kiran Bylappa; Gad, Rajendra S; Busch, Christoph. (2018) Detecting Disguise Attacks on Multi-spectral Face Recognition Through Spectral Signatures. International Conference on Pattern Recognition
Academic article

2017

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

2016

Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2016) Cross-Spectrum Periocular Authentication for NIR and Visible Images Using Bank of Statistical Filters.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Biometric recognition of surgically altered periocular region: A comprehensive study.
Academic chapter/article/Conference paper
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Alonso-Fernandez, Fernando; Bigun, Josef; Raja, Kiran Bylappa. (2016) Cross-Eyed - Cross-Spectral Iris/Periocular Recognition Database and Competition. GI-Edition Lecture Notes in Informatics (LNI)
Academic article
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Dynamic Scale Selected Laplacian Decomposed Frequency Response for Cross-Smartphone Periocular Verification in Visible Spectrum.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Weighted Comparison Score Fusion for Accurate Verification of Surgically Altered Periocular Region.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Eye region based multibiometric fusion to mitigate the effects of body weight variations in face recognition.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Collaborative representation of deep sparse filtered features for robust verification of smartphone periocular images.
Academic chapter/article/Conference paper

2015

Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Time-Frequency Features of Laplacian Decomposition.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Video Presentation Attack Detection in Visible Spectrum Iris Recognition Using Magnified Phase Information. IEEE Transactions on Information Forensics and Security
Academic article
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Vemuri, Vinay Krishna; Busch, Christoph. (2015) Smartphone based visible iris recognition using deep sparse filtering. Pattern Recognition Letters
Academic article
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Multi-modal Authentication System for Smartphones Using Face, Iris and Periocular.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Cheikh, Faouzi Alaya; Busch, Christoph. (2015) Evaluation of Fusion Approaches for Face Recognition using Light Field Cameras.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Fusion of Face and Periocular Information for Improved Authentication on Smartphones.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Iris imaging in visible spectrum using white LED.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation attack detection using Laplacian decomposed frequency response for visible spectrum and Near-Infra-Red iris systems.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing
Academic article
Raghavendra, Rachamandra; Raja, Kiran Bylappa; 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

2014

Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph; Mondal, Soumik. (2014) An Empirical Study of Smartphone Based Iris Recognition in Visible Spectrum.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2014) Smartphone Authentication System Using Periocular Biometrics.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Surbiryala, Jayachander; Raja, Kiran Bylappa; Busch, Christoph. (2014) Novel Finger Vascular Pattern Imaging Device for Robust Biometric Verification.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2014) Smartphone Based Robust Iris Recognition in Visible Spectrum using Clustered K-means Features.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; 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.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2014) Binarized statistical features for improved iris and periocular recognition in visible spectrum.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Surbiryala, Jayachander; Busch, Christoph. (2014) A low-cost multimodal Biometric Sensor to capture Finger Vein and Fingerprint.
Academic chapter/article/Conference paper

2013

Zakizadeh, Roshanak; Martinez, Juan; Raja, Kiran Bylappa; Siakidis, Christos. (2013) Study of factors affecting the appearance of colors under microscopes.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Combining Iris and Periocular Recognition using Light Field Camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Improved face recognition at a distance using light field camera & super resolution schemes.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Pflug, Anika; Yang, Bian; Busch, Christoph. (2013) 3D face reconstruction and multimodal person identification from video captured using smartphone camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) GUCLF: a new light field face database.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) A Novel Image Fusion Scheme For Robust Multiple Face Recognition With Light-field Camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Comparative Evaluation of Super-Resolution Techniques For Multi-Face Recognition Using Light-Field Camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Multi-face recognition at a distance using light-field camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Raja, Kiran Bylappa; Busch, Christoph. (2013) A New Perspective - Face Recognition with Light-Field Camera.
Academic chapter/article/Conference paper
Martinez, Juan; Zakizadeh, Roshanak; Raja, Kiran Bylappa; Siakidis, Christos. (2013) Chromatic differences introduced by microscope optics.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Cheikh, Faouzi Alaya; Yang, Bian; Busch, Christoph. (2013) Robust iris recognition using light-field camera.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Pedersen, Marius. (2013) Artifact detection in gamut mapped images using saliency.
Academic chapter/article/Conference paper

Journal publications

Klefstad, Bjørn; Sandstrak, Grethe; Styve, Arne Gerhard; Raja, Kiran. (2025) Redesigning Computer Science Programs for Next Generation - Perceptions Versus Experiences. IEEE Global Engineering Education Conference, EDUCON
Academic article
Zarei, Amir; Hassanpour, Ahmad; Raja, Kiran. (2025) On Privacy, Accuracy, and Fairness Trade-offs in Facial Recognition. IEEE Access
Academic article
Albaluchi, Yousaf Mohammad Yaqoob; Fu, Biying; Damer, Naser; Ramachandra, Raghavendra; Raja, Kiran. (2025) UAV-based person re-identification: A survey of UAV datasets, approaches, and challenges. Computer Vision and Image Understanding
Academic article
Davis, Josh P.; Robertson, David J.; Jenkins, Ryan E.; Ibsen, Mathias; Nichols, Robert; Babbs, Martha. (2025) The Super-Recogniser Advantage Extends to the Detection of Digitally Manipulated Faces. Applied Cognitive Psychology
Academic article
Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph Günther. (2025) SynMorph: Generating Synthetic Face Morphing Dataset With Mated Samples. IEEE Access
Academic article
Shagdar, Zolbayar; Farmen, Anette Huuse; Amirshahi, Seyed Ali; Raja, Kiran. (2025) A Survey on Computer Vision-Based Automatic Assessment of Stroke and Facial Palsy. IEEE Access
Academic article
Xu, Ying; Terhorst, Philipp; Pedersen, Marius; Raja, Kiran Bylappa. (2024) Analyzing Fairness in Deepfake Detection With Massively Annotated Databases. IEEE Transactions on Technology and Society
Academic article
Hassanpour, Ahmad; Jamalbafrani, Fatemeh; Yang, Bian; Raja, Kiran; Veldhuis, Raymond Nicolaas Johan; Fierrez, Julian. (2024) E2F-Net: Eyes-to-face inpainting via StyleGAN latent space. Pattern Recognition
Academic article
Joseph, Nirmal; George, Sudhish N; Ameer, P.M.; Raja, Kiran. (2024) MedDefend: Securing Medical IoT with Adaptive Noise Reduction Based Adversarial Detection. IEEE Internet of Things Journal
Academic article
Sandstrak, Grethe; Klefstad, Bjørn; Styve, Arne Gerhard; Raja, Kiran Bylappa. (2024) Analyzing Pedagogic Practice and Assessments in a Cross-Campus Programming Course. IEEE Transactions on Education
Academic article
Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph Günther. (2024) Generalized Single-Image-Based Morphing Attack Detection Using Deep Representations from Vision Transformer. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Academic article
Chandaliya, Praveen Kumar; Raja, Kiran Bylappa; Zhang, Haoyu; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Synthetic Ethnicity Alteration for Diversifying Face Datasets - Investigating Recognition and Quality. IEEE International Workshop on Information Forensics and Security (WIFS)
Academic article
Arıcan, Tuğçe; Veldhuis, Raymond Nicolaas Johan; Spreeuwers, Luuk; Bergeron, Loic Kevin; Busch, Christoph; Jalilian, Ehsaneddin. (2024) A Comparative Study of Cross-Device Finger Vein Recognition Using Classical and Deep Learning Approaches. IET Biometrics
Academic article
Gupta, Sandeep; Raja, Kiran; Passerone, Roberto. (2024) Visual Prompt Engineering for Enhancing Facial Recognition Systems Robustness against Evasion Attacks. IEEE Access
Academic article
Raj, M.S. Subodh; George, Sudhish N.; Raja, Kiran. (2024) Leveraging spatio-temporal features using graph neural networks for human activity recognition. Pattern Recognition
Academic article
Kessler, Roman; Raja, Kiran; Tapia, Juan; Busch, Christoph. (2024) Towards minimizing efforts for Morphing Attacks—Deep embeddings for morphing pair selection and improved Morphing Attack Detection. PLOS ONE
Academic article
Rajput, Amitesh Singh; Agarwal, Arnav; Raja, Kiran. (2024) A robust multi-key authority system for privacy-preserving distribution and access control of healthcare data. Computer Communications
Academic article
Vats, Anuja; Volgyes, David; Vermeer, Martijn; Pedersen, Marius; Raja, Kiran; Fantin, Daniele S. M.. (2024) Terrain-Informed Self-Supervised Learning: Enhancing Building Footprint Extraction From LiDAR Data With Limited Annotations. IEEE Transactions on Geoscience and Remote Sensing
Academic article
Liu, Xinwei; Raja, Kiran; Wang, Renfang; Qiu, Hong; Wu, Hucheng; Sun, Dechao. (2024) A Latent Fingerprint in the Wild Database. IEEE Transactions on Information Forensics and Security
Academic article
Terhorst, Philipp; Huber, Marco; Damer, Naser; Kirchbuchner, Florian; Raja, Kiran; Kuijper, Arjan. (2023) Pixel-Level Face Image Quality Assessment for Explainable Face Recognition. IEEE Transactions on Biometrics, Behavior, and Identity Science
Academic article
Gupta, Sandeep; Maple, Carsten; Crispo, Bruno; Raja, Kiran; Yautsiukhin, Artsiom; Martinelli, Fabio. (2023) A survey of human-computer interaction (HCI) & natural habits-based behavioural biometric modalities for user recognition schemes. Pattern Recognition
Academic article
Joseph, Jithin; George, Sudhish N.; Raja, Kiran. (2023) Parameter-Free Matrix Decomposition for Specular Reflections Removal in Endoscopic Images. IEEE Journal of Translational Engineering in Health and Medicine
Academic article
Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph Günther. (2023) Morph-PIPE: Plugging in Identity Prior to Enhance Face Morphing Attack Based on Diffusion Model. NIKT: Norsk IKT-konferanse for forskning og utdanning
Academic article
Veldhuis, Raymond Nicolaas Johan; Raja, Kiran. (2023) On the Relation Between ROC and CMC. IEEE Transactions on Biometrics, Behavior, and Identity Science
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
Vats, Anuja; Raja, Kiran; Pedersen, Marius; Mohammed, Ahmed Kedir. (2022) Multichannel Residual Cues for Fine-Grained Classification in Wireless Capsule Endoscopy. IEEE Access
Academic article
Gupta, Sandeep; Raja, Kiran; Martinelli, Fabio; Crispo, Bruno. (2022) RIDERAUTH: A cancelable touch-signature based rider authentication scheme for driverless taxis. Journal of Information Security and Applications
Academic article
Borj, Parisa Rezaee; Raja, Kiran; Bours, Patrick Adrianus. (2022) Online grooming detection: A comprehensive survey of child exploitation in chat logs. Knowledge-Based Systems
Academic article
Raja, Kiran; Mudgalgundurao, Raghavendra; Busch, Christoph. (2022) Towards better and unlinkable protected biometric templates using label-assisted discrete hashing. IET Biometrics
Academic article
Hassanpour, Ahmad; Daryani, Amir Etefaghi; Mirmahdi, Mahdieh; Raja, Kiran; Yang, Bian; Busch, Christoph. (2022) E2F-GAN: Eyes-to-Face Inpainting via Edge-Aware Coarse-to-Fine GANs. IEEE Access
Academic article
Raja, Kiran; Gupta, Gourav; Venkatesh, Sushma; Ramachandra, Raghavendra; Busch, Christoph. (2022) Towards generalized morphing attack detection by learning residuals. Image and Vision Computing
Academic article
Rouhani, Majid; Olsø, Atle; Styve, Arne; Raja, Kiran. (2022) An Experience Report on Transitioning to Blended Learning and Portfolio-assessment: a Cross-campus Course in Programming. IEEE Global Engineering Education Conference, EDUCON
Academic article
Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben. (2022) Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach. Information Fusion
Academic article
Patel, Heena; Chudasama, Vishal; Prajapati, Kalpesh; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) ThermISRnet: An efficient thermal image super-resolution network. Optical Engineering: The Journal of SPIE
Academic article
Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2021) Face Morphing Attack Generation and Detection: A Comprehensive Survey. IEEE Transactions on Technology and Society
Academic article
Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security
Academic article
Zhang, Haoyu; Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Damer, Naser; Busch, Christoph. (2021) MIPGAN—Generating Strong and High Quality Morphing Attacks Using Identity Prior Driven GAN. IEEE Transactions on Biometrics, Behavior, and Identity Science
Academic article
Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg. (2021) A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics. IET Biometrics
Academic article
Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. Lecture Notes in Computer Science (LNCS)
Academic article
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Raja, Kiran; Ramachandra, Raghavendra. (2021) Direct Unsupervised Super-Resolution Using Generative Adversarial Network (DUS-GAN) for Real-World Data. IEEE Transactions on Image Processing
Academic article
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
Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics
Editorial
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
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2020) Collaborative representation of blur invariant deep sparse features for periocular recognition from smartphones. Image and Vision Computing
Academic article
Boutros, Fadi; Damer, Naser; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Iris and periocular biometrics for head mounted displays: Segmentation, recognition, and synthetic data generation. Image and Vision Computing
Academic article
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
Auksorius, Egidijus; Raja, Kiran; Topcu, Berkay; Ramachandra, Raghavendra; Busch, Christoph; Boccara, Claude A. (2020) Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging. IEEE Access
Academic article
Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) Fused Spectral Features in Kernel Weighted Collaborative Representation for Gender Classification Using Ocular Images. Advances in Intelligent Systems and Computing
Academic article
Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-Spectral Imaging for Artificial Ripened Banana Detection. European Workshop on Visual Information Processing
Academic article
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2019) Anchored kernel hashing for cancelable template protection for cross-spectral periocular data. Lecture Notes in Computer Science (LNCS)
Academic article
Raja, Kiran; Ramachandra, Raghavendra; Auksorius, Egidijus; Busch, Christoph. (2019) Subsurface and layer intertwined template protection using inherent properties of full-field optical coherence tomography fingerprint imaging. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Academic article
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma; Busch, Christoph. (2019) Design and Development of Low-Cost Sensor to Capture Ventral and Dorsal Finger Vein for Biometric Authentication. IEEE Sensors Journal
Academic article
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
Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma; Gad, Rajendra; Busch, Christoph. (2019) Visible to band gender classification: An extensive experimental evaluation based on multi-spectral imaging. IEEE Xplore Digital Library
Academic article
Raja, Kiran; Raghavendra, R.; Auksorius, Egidijus; Boccara, Claude; Busch, Christoph. (2019) Two Stream Convolutional Neural Network for Full Field Optical Coherence Tomography Fingerprint Recognition. IEEE Xplore Digital Library
Academic article
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2018) Detecting Face Morphing Attacks with Collaborative Representation of Steerable Features. Advances in Intelligent Systems and Computing
Academic article
Thorsen, Tommy Arild Garden; Wasnik, Pankaj Shivdayal; Busch, Christoph; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2018) Assessing Face Image Quality with LSTMs. Norsk Informasjonssikkerhetskonferanse (NISK)
Academic article
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2018) Towards a Cancelable Template Protection Across NIR to Visible Spectrum Using Anchored Kernel Hashing – A Study on Cross-Spectral Periocular Images. Advances in Intelligent Systems and Computing
Academic article
Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph. (2018) Improved ear verification after surgery - An approach based on collaborative representation of locally competitive features. Pattern Recognition
Academic article
Ramachandra, Raghavendra; Vetrekar, Narayan; Raja, Kiran Bylappa; Gad, Rajendra S; Busch, Christoph. (2018) Detecting Disguise Attacks on Multi-spectral Face Recognition Through Spectral Signatures. International Conference on Pattern Recognition
Academic article
Stokkenes, Martin; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Sigaard, Morten; Gomez-Barrero, Marta; Busch, Christoph. (2017) Multi-biometric template protection on smartphones: An approach based on binarized statistical features and bloom filters. Lecture Notes in Computer Science (LNCS)
Academic article
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Multi-patch deep sparse histograms for iris recognition in visible spectrum using collaborative subspace for robust verification. Pattern Recognition Letters
Academic article
Wasnik, Pankaj Shivdayal; Schäfer, Katharina; Ramachandra, Raghavendra; Busch, Christoph; Raja, Kiran Bylappa. (2017) Fusing Biometric Scores Using Subjective Logic for Gait Recognition on Smartphone. GI-Edition Lecture Notes in Informatics (LNI)
Academic article
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face Presentation Attack Detection by Exploring Spectral Signatures. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Academic article
Alonso-Fernandez, Fernando; Raja, Kiran Bylappa; Busch, Christoph; Bigun, Josef. (2017) Log-Likelihood Score Level Fusion for Improved Cross-Sensor Smartphone Periocular Recognition. European Signal Processing Conference
Academic article
Gomez-Barrero, Marta; Rathgeb, Christian; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2017) Biometric Symmetry: Implications on Template Protection. European Signal Processing Conference
Academic article
Shivakumara, Palaiahnakote; Raghavendra, Ramachandra; Qin, Longfei; Raja, Kiran Bylappa; Lu, Tong; Pal, Umapada. (2017) A new multi-modal approach to bib number/text detection and recognition in Marathon images. Pattern Recognition
Academic article
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Transferable Deep-CNN Features for Detecting Digital and Print-Scanned Morphed Face Images. IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Academic article
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Collaborative representation of statistically independent filters? response: An application to face recognition under illicit drug abuse alterations. Lecture Notes in Computer Science (LNCS)
Academic article
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Alonso-Fernandez, Fernando; Bigun, Josef; Raja, Kiran Bylappa. (2016) Cross-Eyed - Cross-Spectral Iris/Periocular Recognition Database and Competition. GI-Edition Lecture Notes in Informatics (LNI)
Academic article
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Video Presentation Attack Detection in Visible Spectrum Iris Recognition Using Magnified Phase Information. IEEE Transactions on Information Forensics and Security
Academic article
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Vemuri, Vinay Krishna; Busch, Christoph. (2015) Smartphone based visible iris recognition using deep sparse filtering. Pattern Recognition Letters
Academic article
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing
Academic article
Raghavendra, Rachamandra; Raja, Kiran Bylappa; 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

Books

Kabbani, Wassim Hassan; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph Günther. (2024) Radial Distortion in Face Images: Detection and Impact. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
Academic anthology/Conference proceedings
Kabbani, Wassim Hassan; Raja, Kiran Bylappa; Busch, Christoph Günther. (2023) Robust Sclera Segmentation for Skin-Tone Agnostic Face Image Quality Assessment. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
Academic anthology/Conference proceedings
Brömme, Arslan; Busch, Christoph; Damer, Naser; Dantcheva, Antitza; Gomez-Barrero, Marta; Raja, Kiran. (2021) Proceedings of the 20th International Conference of the Biometrics Special Interest Group (BIOSIG2021). Gesellschaft für Informatik Gesellschaft für Informatik
Academic anthology/Conference proceedings
Brömme, Arslan; Busch, Christoph; Dantcheva, Antitza; Raja, Kiran; Rathgeb, Christian; Uhl, Andreas. (2020) Proceedings of the 19th International Conference of the Biometrics Special Interest Group (BIOSIG 2020). Gesellschaft für Informatik Gesellschaft für Informatik
Academic anthology/Conference proceedings

Part of book/report

Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2024) Demographic Variability in Face Image Quality Measures.
Academic chapter/article/Conference paper
Kabbani, Wassim Hassan; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2024) Eye Sclera for Fair Face Image Quality Assessment.
Academic chapter/article/Conference paper
Vaghela, Hiren; Sarvaiya, Anjali; Premlani, Pranav; Agarwal, Abhishek; Upla, Kishor; Raja, Kiran Bylappa. (2023) DCAN:DenseNet with Channel Attention Network for Super-resolution of Wireless Capsule Endoscopy.
Academic chapter/article/Conference paper
Xu, Ying; Raja, Kiran Bylappa; Verdoliva, L.; Pedersen, Marius. (2023) Learning Pairwise Interaction for Generalizable DeepFake Detection.
Academic chapter/article/Conference paper
Tapia, Juan E.; Busch, Christoph Günther; Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2023) Simulating Print/Scan Textures for Morphing Attack Detection.
Academic chapter/article/Conference paper
Xu, Ying; Raja, Kiran; Pedersen, Marius. (2022) Supervised Contrastive Learning for Generalizable and Explainable DeepFakes Detection.
Academic chapter/article/Conference paper
Xu, Ying; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2022) Adversarial Attacks on Face Recognition Systems.
Chapter
Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition.
Academic chapter/article/Conference paper
Borj, Parisa Rezaee; Raja, Kiran; Bours, Patrick. (2021) Detecting Sexual Predatory Chats by Perturbed Data and Balanced Ensembles.
Academic chapter/article/Conference paper
Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network.
Academic chapter/article/Conference paper
Boutros, Fadi; Damer, Naser; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Periocular Biometrics in Head-Mounted Displays: A Sample Selection Approach for Better Recognition.
Academic chapter/article/Conference paper
Boutros, Fadi; Damer, Naser; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Fusing Iris and Periocular Region for User Verification in Head Mounted Displays.
Academic chapter/article/Conference paper
Rai, Aashish; Chudasama, Vishal; Upla, Kishor; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2020) ComSupResNet: A Compact Super-Resolution Network for Low-Resolution Face Images.
Academic chapter/article/Conference paper
Boutros, Fadi; Damer, Naser; Fang, Meiling; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Compact Models for Periocular Verification through Knowledge Distillation.
Academic chapter/article/Conference paper
Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Raja, Kiran Bylappa. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2019) Towards making Morphing Attack Detection robust using hybrid Scale-Space Colour Texture Features.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2019) An Empirical Evaluation of Deep Architectures on Generalization of Smartphone-based Face Image Quality Assessment.
Academic chapter/article/Conference paper
Sanfilippo, Filippo; Raja, Kiran. (2019) A Multi-Sensor System for Enhancing Situational Awareness and Stress Management for People with ASD in the Workplace and in Everyday Life.
Academic chapter/article/Conference paper
Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2019) A New Multi-spectral Iris Acquisition Sensor for Biometric Verification and Presentation Attack Detection.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2019) Towards Reducing the Error Rates in Template Protection for Iris Recognition Using Custom Cuckoo Filters.
Academic chapter/article/Conference paper
Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features.
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.
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.
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.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection.
Academic chapter/article/Conference paper
Borj, Parisa Rezaee; Raja, Kiran Bylappa; Bours, Patrick. (2019) On Preprocessing the Data for Improving Sexual Predator Detection.
Academic chapter/article/Conference paper
Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Gad, Rajendra S. (2019) Detecting Glass in Ocular Region Based on Grassmann Manifold Projection Metric Learning by Exploring Spectral Imaging.
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.
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.
Academic chapter/article/Conference paper
Khodabakhsh, Ali; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Wasnik, Pankaj Shivdayal; Busch, Christoph. (2018) Fake Face Detection Methods: Can They Be Generalized?.
Academic chapter/article/Conference paper
Vetrekar, Narayan; Raja, Kiran; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2018) Multi-spectral Imaging For Robust Ocular Biometrics.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2018) A low-cost Multi-Fingervein Verification System.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2018) Subjective Logic Based Score Level Fusion: Combining Faces and Fingerprints.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2018) Transgender Face Recognition with Off-the-shelf Pre-trained CNNs: A comprehensive study.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma; Hegde, Sneha; Dandappanavar, Shreedhar; Busch, Christoph. (2018) Verifying the Newborns without Infection Risks Using Contactless Palmprints.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma; Raja, Kiran Bylappa; Wasnik, Pankaj Shivdayal; Stokkenes, Martin; Busch, Christoph. (2018) Fusion of Multi-Scale Local Phase Quantization Features for Face Presentation Attack Detection.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Vetrekar, Narayan; Raja, Kiran Bylappa; Gad, Rajendra S; Busch, Christoph. (2018) Robust gender classification using extended multi-spectral imaging by exploring the spectral angle mapper.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2017) Assessing Face Image Quality for Smartphone based Face Recognition System.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Venkatesh, Sushma Krupa; Raja, Kiran Bylappa; Busch, Christoph. (2017) Transferable deep convolutional neural network features for fingervein presentation attack detection.
Academic chapter/article/Conference paper
Scherhag, Ulrich; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Gomez-Barrero, Marta; Rathgeb, Christian; Busch, Christoph. (2017) On the Vulnerability of Face Recognition Systems Towards Morphed Face Attacks.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2017) Presentation Attack Detection in Face Biometric Systems Using Raw Sensor Data from Smartphones.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Marcel, Sebastien; Busch, Christoph. (2017) Face Presentation Attack Detection Across Spectrum using Time-Frequency Descriptors of Maximal Response in Laplacian Scale-Space.
Academic chapter/article/Conference paper
Vetrekar, Narayan; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Gad, R.S.; Busch, Christoph. (2017) Collaborative Representation of Grassmann Manifold Projection Metric for Robust Multi-spectral Face Recognition.
Chapter
Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Gad, R.S.; Busch, Christoph. (2017) Extended Multi-spectral Imaging For Gender Classification Based On Image Set.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Busch, Christoph. (2017) Robust face presentation attack detection on smartphones : An approach based on variable focus.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Face morphing versus face averaging: Vulnerability and detection.
Academic chapter/article/Conference paper
Sequeira, Ana F; Chen, Lulu; Ferryman, James; Wild, Peter; Alonso-Fernandez, Fernando; Bigun, Josef. (2017) Cross-Eyed 2017: Cross-Spectral Iris/Periocular Recognition Competition.
Academic chapter/article/Conference paper
Stokkenes, Martin; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Sigaard, Morten; Busch, Christoph. (2017) Feature Level Fused Templates for Multi-Biometric System on Smartphones.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma Krupa; Busch, Christoph. (2017) Extended multispectral face presentation attack detection: An approach based on fusing information from individual spectral bands.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Auksorius, Egidijus; Ramachandra, Raghavendra; Boccara, A. Claude; Busch, Christoph. (2017) Robust Veriﬁcation With Subsurface Fingerprint Recognition Using Full Field Optical Coherence Tomography.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2017) Scale-level score fusion of steered pyramid features for cross-spectral periocular verification.
Academic chapter/article/Conference paper
Tulshidas, Vetrekar Narayan; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Gad, R.S.; Busch, Christoph. (2017) Extended Spectral To Visible Comparison Based On Spectral Band Selection Method For Robust Face Recognition.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Venkatesh, Sushma Krupa; Cheikh, Faouzi Alaya; Busch, Christoph. (2017) On the Vulnerability of Extended Multispectral Face Recognition Systems Towards Presentation Attacks.
Academic chapter/article/Conference paper
Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2017) ContlensNet: Robust Iris Contact Lens Detection Using Deep Convolutional Neural Networks.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2016) Cross-Spectrum Periocular Authentication for NIR and Visible Images Using Bank of Statistical Filters.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Biometric recognition of surgically altered periocular region: A comprehensive study.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Dynamic Scale Selected Laplacian Decomposed Frequency Response for Cross-Smartphone Periocular Verification in Visible Spectrum.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Weighted Comparison Score Fusion for Accurate Verification of Surgically Altered Periocular Region.
Academic chapter/article/Conference paper
Wasnik, Pankaj Shivdayal; Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Eye region based multibiometric fusion to mitigate the effects of body weight variations in face recognition.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Ramachandra; Busch, Christoph. (2016) Collaborative representation of deep sparse filtered features for robust verification of smartphone periocular images.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Time-Frequency Features of Laplacian Decomposition.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Multi-modal Authentication System for Smartphones Using Face, Iris and Periocular.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Cheikh, Faouzi Alaya; Busch, Christoph. (2015) Evaluation of Fusion Approaches for Face Recognition using Light Field Cameras.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2015) Fusion of Face and Periocular Information for Improved Authentication on Smartphones.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Iris imaging in visible spectrum using white LED.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2015) Presentation attack detection using Laplacian decomposed frequency response for visible spectrum and Near-Infra-Red iris systems.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph; Mondal, Soumik. (2014) An Empirical Study of Smartphone Based Iris Recognition in Visible Spectrum.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Stokkenes, Martin; Busch, Christoph. (2014) Smartphone Authentication System Using Periocular Biometrics.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Surbiryala, Jayachander; Raja, Kiran Bylappa; Busch, Christoph. (2014) Novel Finger Vascular Pattern Imaging Device for Robust Biometric Verification.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2014) Smartphone Based Robust Iris Recognition in Visible Spectrum using Clustered K-means Features.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; 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.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Busch, Christoph. (2014) Binarized statistical features for improved iris and periocular recognition in visible spectrum.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Surbiryala, Jayachander; Busch, Christoph. (2014) A low-cost multimodal Biometric Sensor to capture Finger Vein and Fingerprint.
Academic chapter/article/Conference paper
Zakizadeh, Roshanak; Martinez, Juan; Raja, Kiran Bylappa; Siakidis, Christos. (2013) Study of factors affecting the appearance of colors under microscopes.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Combining Iris and Periocular Recognition using Light Field Camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Improved face recognition at a distance using light field camera & super resolution schemes.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Pflug, Anika; Yang, Bian; Busch, Christoph. (2013) 3D face reconstruction and multimodal person identification from video captured using smartphone camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) GUCLF: a new light field face database.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) A Novel Image Fusion Scheme For Robust Multiple Face Recognition With Light-field Camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Comparative Evaluation of Super-Resolution Techniques For Multi-Face Recognition Using Light-Field Camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Raja, Kiran Bylappa; Yang, Bian; Busch, Christoph. (2013) Multi-face recognition at a distance using light-field camera.
Academic chapter/article/Conference paper
Raghavendra, Rachamandra; Yang, Bian; Raja, Kiran Bylappa; Busch, Christoph. (2013) A New Perspective - Face Recognition with Light-Field Camera.
Academic chapter/article/Conference paper
Martinez, Juan; Zakizadeh, Roshanak; Raja, Kiran Bylappa; Siakidis, Christos. (2013) Chromatic differences introduced by microscope optics.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Raghavendra, Rachamandra; Cheikh, Faouzi Alaya; Yang, Bian; Busch, Christoph. (2013) Robust iris recognition using light-field camera.
Academic chapter/article/Conference paper
Raja, Kiran Bylappa; Pedersen, Marius. (2013) Artifact detection in gamut mapped images using saliency.
Academic chapter/article/Conference paper

Report

Xu, Ying; Raja, Kiran; Pedersen, Marius. (2025) Generalising Deepfake Detection: Towards Robust, Interpretable and Fair Models. NTNU Norges teknisk-naturvitenskapelige universitet NTNU Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Leiknes, Halgeir; Svendsen, Marit; Osen, Ottar; Raja, Kiran; Gebremedhin, Alemayehu; Stuen, Ina Merete. (2021) Fremtidens teknologistudier (FTS), grupperapport: A1 - Bachelor i ingeniørfag. NTNU NTNU
Report

Teaching

Courses

Outreach

2023

Poster

Agossou, Emmanuel; Vats, Anuja; Pedersen, Marius; Raja, Kiran. (2023) Auto-WCEBleedGen Challenge presentation, Computer Vision & Image Processing (CVIP-2023). Computer Vision & Image Processing (CVIP-2023) , IIT Jammu, India 2023-11-04 - 2023-11-04

2022

Poster

Grimmer, Marcel; Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph Günther. (2022) Time flies by: Analyzing the Impact of Face Ageing on the Recognition Performance with Synthetic Data. 21st International Conference of the Biometrics Special Interest Group (BIOSIG 2022) 2022-09-14 - 2022-09-16
Academic lecture

Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2022) Algorithmic Fairness in Face Morphing Attack Detection. Winter Conference on Applications of Computer Vision Workshops (WACVW) 2022-01-04 - 2022-01-08
Academic lecture

Patel, C; Jain, A.; Bawkar, S.; Khorasiya, M.; Prajapati, K.; Upla, Kishor. (2022) SRTGAN: Triplet Loss based Generative Adversarial Network for Real-World Super-Resolution. the 7th Seventh International Conference on Computer Vision & Image Processing (CVIP) 2022-11-04 - 2022-11-06
Academic lecture

Rouhani, Majid; Olsø, Atle; Styve, Arne; Raja, Kiran Bylappa. (2022) An Experience Report on Transitioning to Blended Learning and Portfolio-assessment: a Cross-campus Course in Programming. Læringsfestivalen 2022 , NTNU 2022-05-09 - 2022-05-10

2021

Academic lecture

Grimmer, Marcel; Zhang, Haoyu; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph Günther. (2021) Generation of Non-Deterministic Synthetic Face Datasets Guided by Identity Priors. Norwegian Information Security Conference 2021-11-29 - 2021-12-01
Academic lecture

Damer, Naser; Raja, Kiran; Süßmilch, Marius; Venkatesh, Sushma; Boutros, Fadi; Fang, Meiling. (2021) Regenmorph: visibly realistic GAN generated face morphing attacks by attack re-generation. International Symposium on Visual Computing , Virtual 2021-10-04 - 2021-10-06

2019

Academic lecture

Ramachandra, Raghavendra; Singh, Jag Mohan; Venkatesh, Sushma; Raja, Kiran Bylappa; Busch, Christoph. (2019) Face presentation attack detection using multi-classifier fusion of off-the-shelf deep features. Fourth International Conference on Computer Vision & Image Processing , Jaipur 2019-09-27 - 2019-09-29
Academic lecture

Singh, Jag Mohan; Venkatesh, Sushma; Raja, Kiran Bylappa; Ramachandra, Raghavendra; Busch, Christoph. (2019) Detecting Finger-Vein Presentation Attacks Using 3D Shape and Diffuse Reflectance Decomposition. The 15th International Conference on SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS) , Sorrento 2019-11-26 - 2019-11-29
Academic lecture

Singh, Jag Mohan; Ramachandra, Raghavendra; Raja, Kiran Bylappa; Busch, Christoph. (2019) Robust Morph-Detection at Automated Border Control Gate using Deep Decomposed 3D Shape and Diffuse Reflectance. The 15th International Conference on SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS) , Sorrento 2019-11-26 - 2019-11-29

Språkvelger

Kiran Bylappa Raja