Journal publications

• 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. vol. 83-84.
• Hassanpour, Ahmad; Daryani, Amir Etefaghi; Mirmahdi, Mahdieh; Raja, Kiran; Yang, Bian; Busch, Christoph; Fierrez, Julian. (2022) E2F-GAN: Eyes-to-Face Inpainting via Edge-Aware Coarse-to-Fine GANs. IEEE Access. vol. 10.
• Raja, Kiran; Mudgalgundurao, Raghavendra; Busch, Christoph. (2022) Towards better and unlinkable protected biometric templates using label-assisted discrete hashing. IET Biometrics. vol. 11 (1).
• 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. vol. 11 (1).
• 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.
• 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). vol. 13017.
• 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. vol. 60 (7).
• 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. vol. 30.
• 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; Veldhuis, Raymond N.J.; Maltoni, Davide; Busch, Christoph. (2021) Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking. IEEE Transactions on Information Forensics and Security. vol. 16.
• Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics. vol. 10 (4).
• Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2021) Face Morphing Attack Generation and Detection: A Comprehensive Survey. IEEE transactions on technology and society. vol. 2 (3).
• 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. vol. 3 (3).
• 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. vol. 8.
• 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. vol. 104.
• 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. vol. 101.
• 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. vol. 1022.
• 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).
• 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). vol. 11188 LNCS.
• 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.
• 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. vol. 2019-.
• 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. vol. 19 (15).
• Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-Spectral Imaging for Artificial Ripened Banana Detection. European Workshop on Visual Information Processing. vol. 2019-October.
• 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.
• 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. vol. 1024.
• 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. vol. 83.
• 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. vol. 1022.
• 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. vol. 2018-August.
• Thorsen, Tommy Arild Garden; Wasnik, Pankaj Shivdayal; Busch, Christoph; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2018) Assessing Face Image Quality with LSTMs. Norsk Informasjonssikkerhetskonferanse (NISK). vol. 11.
• 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. vol. 91.
• 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. vol. 61.
• Alonso-Fernandez, Fernando; Bylappa Raja, Kiran; Busch, Christoph; Bigun, Josef. (2017) Log-Likelihood Score Level Fusion for Improved Cross-Sensor Smartphone Periocular Recognition. European Signal Processing Conference.
• Gomez-Barrero, Marta; Rathgeb, Christian; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2017) Biometric Symmetry: Implications on Template Protection. European Signal Processing Conference.
• 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). vol. 10270 LNCS.
• 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. vol. 2017-July.
• 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. vol. 2017-July.
• 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). vol. 10125 LNCS.
• Wasnik, Pankaj Shivdayal; Schäfer, Katharina; Ramachandra, Raghavendra; Busch, Christoph; Bylappa Raja, Kiran. (2017) Fusing Biometric Scores Using Subjective Logic for Gait Recognition on Smartphone. Lecture Notes in Informatics.
• 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. Lecture Notes in Informatics. vol. P-260.
• 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. vol. 10 (10).
• Bylappa Raja, Kiran; Raghavendra, Rachamandra; Vemuri, Vinay Krishna; Busch, Christoph. (2015) Smartphone based visible iris recognition using deep sparse filtering. Pattern Recognition Letters. vol. 57.
• 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.
• Raghavendra, Rachamandra; Bylappa Raja, Kiran; Busch, Christoph. (2015) Presentation Attack Detection for Face Recognition Using Light Field Camera. IEEE Transactions on Image Processing. vol. 24 (3).

Books

• Brömme, Arslan; Busch, Christoph; Damer, Naser; Dantcheva, Antitza; Gomez-Barrero, Marta; Raja, Kiran; Rathgeb, Christian; Sequeira, Ana F.; Uhl, Andreas. (2021) Proceedings of the 20th International Conference of the Biometrics Special Interest Group (BIOSIG2021). Gesellschaft für Informatik. 2021. ISBN 978-1-6654-2693-0. Lecture Notes in Informatics (20).
• 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. 2020. ISBN 9783885797005. Lecture Notes in Informatics (19).

Part of book/report

• Borj, Parisa Rezaee; Raja, Kiran; Bours, Patrick. (2021) Detecting Sexual Predatory Chats by Perturbed Data and Balanced Ensembles. Proceedings of the 20th International Conference of the Biometrics Special Interest Group (BIOSIG2021).
• 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.
• 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).
• 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).
• Boutros, Fadi; Damer, Naser; Fang, Meiling; Bylappa Raja, Kiran; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Compact Models for Periocular Verification through Knowledge Distillation. Proceedings of the 19th International Conference of the Biometrics Special Interest Group (BIOSIG 2020).
• 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.
• 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.
• 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).
• Borj, Parisa Rezaee; Bylappa Raja, Kiran; Bours, Patrick. (2019) On Preprocessing the Data for Improving Sexual Predator Detection. 14th International Workshop on Semantic and Social Media Adaptation and Personalization.
• 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).
• 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).
• 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).
• 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).
• 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. Proceeding of the 52nd Hawaii International Conference on System Sciences (HICSS 2019).
• 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.
• 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).
• 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).
• 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.
• 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).
• 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.
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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.
• 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).
• 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).
• 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).
• 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).
• 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).
• 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.
• 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).
• 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).
• 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).
• 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).
• 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).
• 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.
• 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.
• 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).
• 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.
• 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.
• 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.
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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).
• 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.
• 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).
• 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.
• 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.
• 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.
• 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.
• 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).
• 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.
• 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.
• 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.
• Bylappa Raja, Kiran; Pedersen, Marius. (2013) Artifact detection in gamut mapped images using saliency. 2013 Colour and Visual Computing Symposium (CVCS), 5th and 6th September, 2013, Gjøvik, Norway.
• 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.
• Martinez, Juan; Zakizadeh, Roshanak; Bylappa Raja, Kiran; Siakidis, Christos. (2013) Chromatic differences introduced by microscope optics. AIC Colour 2013, 12th Congress of the International Colour Association, 8-12 July, 2013, Newcastle upon Tyne, UK. Proceedings, Vol 1-4.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• Zakizadeh, Roshanak; Martinez, Juan; Bylappa Raja, Kiran; Siakidis, Christos. (2013) Study of factors affecting the appearance of colors under microscopes. 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications.

Report/dissertation

• Leiknes, Halgeir; Svendsen, Marit; Osen, Ottar; Raja, Kiran; Gebremedhin, Alemayehu; Stuen, Ina Merete; Torvatn, Tim Kristian Andreas; Killi, Simen. (2021) Fremtidens teknologistudier (FTS), grupperapport: A1 - Bachelor i ingeniørfag. 2021.

Others

• Rouhani, Majid; Olsø, Atle; Styve, Arne; Bylappa Raja, Kiran. (2022) An Experience Report on Transitioning to Blended Learning and Portfolio-assessment: a Cross-campus Course in Programming. Læringsfestivalen 2022 . Læringsfestivalen; NTNU. 2022-05-09 - 2022-05-10.
• Ramachandra, Raghavendra; Singh, Jag Mohan; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2019) Face presentation attack detection using multi-classifier fusion of off-the-shelf deep features. Fourth International Conference on Computer Vision & Image Processing . IAPR; Jaipur. 2019-09-27 - 2019-09-29.
• Singh, Jag Mohan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) Robust Morph-Detection at Automated Border Control Gate using Deep Decomposed 3D Shape and Diffuse Reflectance. The 15th International Conference on SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS) . IEEE; Sorrento. 2019-11-26 - 2019-11-29.
• Singh, Jag Mohan; Venkatesh, Sushma; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Detecting Finger-Vein Presentation Attacks Using 3D Shape and Diffuse Reflectance Decomposition. The 15th International Conference on SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS) . IEEE; Sorrento. 2019-11-26 - 2019-11-29.