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  • 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).
  • 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).
  • 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.