2024

• Singh, Jag Mohan; Ramachandra, Raghavendra. (2024) 3-D Face Morphing Attacks: Generation, Vulnerability and Detection. IEEE Transactions on Biometrics, Behavior, and Identity Science
  Vitenskapelig artikkel
• Nandanwar, Lokesh; Shivakumara, Palaiahnakote; Jalab, Hamid A.; Ibrahim, Rabha W.; Ramachandra, Raghavendra; Pal, Umapada. (2024) A Conformable Moments-Based Deep Learning System for Forged Handwriting Detection. IEEE Transactions on Neural Networks and Learning Systems
  Vitenskapelig artikkel
• Jaswal, Gaurav; Verma, Aman; Roy, Sumantra Dutta; Ramachandra, Raghavendra. (2024) Learning Joint Local-Global Iris Representations via Spatial Calibration for Generalized Presentation Attack Detection. IEEE Transactions on Biometrics, Behavior, and Identity Science
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Zhang, Wentian; Liu, Haozhe; Liu, Feng; Ramachandra, Raghavendra. (2024) A uniform representation model for OCT-based fingerprint presentation attack detection and reconstruction. Pattern Recognition
  Vitenskapelig artikkel
• Zhang, Wentian; Liu, Haozhe; Xie, Jinheng; Huang, Yawen; Zhang, Yu; Li, Yuexiang. (2024) Anomaly detection via gating highway connection for retinal fundus images. Pattern Recognition
  Vitenskapelig artikkel
• Li, Hailin; Ramachandra, Raghavendra. (2024) Fingerphoto morphing attack generation using texture descriptors based landmarks. Scientific Reports
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Chatterjee, Ayan; Riegler, Michael; Johnson, Miriam S.; Das, Jishnu; Pahari, Nibedita; Ramachandra, Raghavendra. (2024) Exploring online public survey lifestyle datasets with statistical analysis, machine learning and semantic ontology. Scientific Reports
  Vitenskapelig artikkel

2023

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

2022

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

2021

• Grimmer, Marcel; Ramachandra, Raghavendra; Busch, Christoph. (2021) Deep Face Age Progression: A Survey. IEEE Access
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Khodabakhsh, Ali; Busch, Christoph; Ramachandra, Raghavendra. (2021) Automated Authentication of Audiovisual Contents: A Biometric Approach. Doktoravhandlinger ved NTNU (213)
  Doktorgradsavhandling
• Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Busch, Christoph. (2021) Face Morphing Attack Generation and Detection: A Comprehensive Survey. IEEE Transactions on Technology and Society
  Vitenskapelig artikkel
• Qin, Le; Peng, Fei; Venkatesh, Sushma; Ramachandra, Raghavendra; Long, Min; Busch, Christoph. (2021) Low Visual Distortion and Robust Morphing Attacks Based on Partial Face Image Manipulation. IEEE Transactions on Biometrics, Behavior, and Identity Science
  Vitenskapelig artikkel
• Ramachandra, Raghavendra; Damer, Naser; Raja, Kiran; Rattani, Ajita. (2021) Guest Editorial: WACV 2020—Presentation attacks on biometric systems. IET Biometrics
  Leder
• 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
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Mandalapu, Hareesh; Reddy, P. N. Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva. (2021) Multilingual Audio-Visual Smartphone Dataset and Evaluation. IEEE Access
  Vitenskapelig artikkel
• Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2021) On the Applicability of Synthetic Data for Face Recognition. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• 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
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Vakhshiteh, Fatemeh; Nickabadi, Ahmad; Ramachandra, Raghavendra. (2021) Adversarial Attacks against Face Recognition: A Comprehensive Study. IEEE Access
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Mandalapu, Hareesh; Reddy P N, Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva. (2021) Audio-Visual Biometric Recognition and Presentation Attack Detection: A Comprehensive Survey. IEEE Access
  Vitenskapelig oversiktsartikkel/review
• Mandalapu, Hareesh; Elbo, Thomas Møller; Ramachandra, Raghavendra; Busch, Christoph. (2021) Cross-lingual Speaker Verification: Evaluation On X-Vector Method. Springer
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Mandalapu, Hareesh; Busch, Christoph; Ramachandra, Raghavendra. (2021) Multilingual Voice Impersonation Dataset and Evaluation. Springer
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Chowdhury, Tamal; Shivakumara, Palaiahnakote; Pal, Umapada; Lu, Tong; Ramachandra, Raghavendra; Chanda, Sukalpa. (2021) DCINN: Deformable Convolution and Inception Based Neural Network for Tattoo Text Detection Through Skin Region. Springer
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• 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)
  Vitenskapelig artikkel

2020

• Krishnani, Divya; Shivakumara, Palaiahnakote; Lu, Tong; Pal, Umapada; Ramachandra, Raghavendra. (2020) Structure Function Based Transform Features for Behavior-Oriented Social Media Image Classification. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong; Blumenstein, Michael. (2020) A New U-Net Based License Plate Enhancement Model in Night and Day Images. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Chowdhury, Pinaki Nath; Shivakumara, Palaiahnakote; Kanchan, Swati; Ramachandra, Raghavendra; Pal, Umapada; Lu, Tong. (2020) Graph attention network for detecting license plates in crowded street scenes. Pattern Recognition Letters
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Ahmed, Javed; Yildirim Yayilgan, Sule; Nowostawski, Mariusz; Abomhara, Mohamed Ali Saleh; Ramachandra, Raghavendra; Elezaj, Ogerta. (2020) Towards Blockchain-based GDPR-compliant Online Social Networks: Challenges, Opportunities and Way Forward. Advances in Intelligent Systems and Computing
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Periocular Biometrics in Head-Mounted Displays: A Sample Selection Approach for Better Recognition. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• 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
  Vitenskapelig artikkel
• Chudasama, Vishal; Patel, Heena; Prajapati, Kalpesh; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2020) TherISuRNet-A Computationally Efficient Thermal Image Super-Resolution Network. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Boutros, Fadi; Damer, Naser; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Kirchbuchner, Florian; Kuijper, Arjan. (2020) Fusing Iris and Periocular Region for User Verification in Head Mounted Displays. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Rai, Aashish; Chudasama, Vishal; Upla, Kishor; Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2020) ComSupResNet: A Compact Super-Resolution Network for Low-Resolution Face Images. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Prajapati, Kalpesh; Chudasama, Vishal; Patel, Heena; Upla, Kishor; Ramachandra, Raghavendra; Bylappa Raja, Kiran. (2020) Unsupervised single image super-resolution network (usisresnet) for real-world data using generative adversarial network. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2020) Video based deception detection using deep recurrent convolutional neural network. Communications in Computer and Information Science (CCIS)
  Vitenskapelig artikkel
• 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)
  Vitenskapelig artikkel
• Ahmed, Javed; Yildirim Yayilgan, Sule; Nowostaki, Mariusz; Ramachandra, Raghavendra; Elezaj, Ogerta; Abomohara, Mohamad. (2020) GDPR compliant consent driven data protection in online social networks: A blockchain-based approach. 2020 3rd International Conference on Information and Computer Technologies (ICICT)
  Vitenskapelig artikkel
• 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)
  Vitenskapelig artikkel

2019

• Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Anchored kernel hashing for cancelable template protection for cross-spectral periocular data. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Nag, Sauradip; Ramachandra, Raghavendra; Shivakumara, Palaiahnakote; Pal, Umapada; Lu, Tong; Kankanhalli, Mohan S.. (2019) CRNN Based Jersey-Bib Number/Text Recognition in Sports and Marathon Images. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Spreeuwers, Luuk; Veldhuis, Raymond N.J.; Busch, Christoph. (2019) Morphed Face Detection Based on Deep Color Residual Noise. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Raja, Kiran; Damer, Naser; Ramachandra, Raghavendra; Boutros, Fadi; Busch, Christoph. (2019) Cross-Spectral Periocular Recognition by Cascaded Spectral Image Transformation. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-spectral Imaging To Detect Artificial Ripening Of Banana: A Comprehensive Empirical Study. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Venkatesh, Sushma; Ramachandra, Raghavendra; Bours, Patrick. (2019) Robust Algorithm for Multimodal Deception Detection. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Bylappa Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph. (2019) Towards Reducing the Error Rates in Template Protection for Iris Recognition Using Custom Cuckoo Filters. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Wasnik, Pankaj Shivdayal; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) An Empirical Evaluation of Deep Architectures on Generalization of Smartphone-based Face Image Quality Assessment. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Image Quality and Texture-Based Features for Reliable Textured Contact Lens Detection. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Mandalapu, Hareesh; Ramachandra, Raghavendra; Busch, Christoph. (2019) Empirical Evaluation of Texture-Based Print and Contact Lens Iris Presentation Attack Detection Methods. Association for Computing Machinery (ACM)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Veldhuis, Raymond N.J.; Raja, Kiran; Ramachandra, Raghavendra. (2019) A likelihood ratio classifier for histogram features. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Bhattacharjee, Sushil; Wasnik, Pankaj Shivdayal; Marcel, Sebastien. (2019) Custom Silicone Face Masks: Vulnerability of Commercial Face Recognition Systems and Presentation Attack Detection. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Venkatesh, Sushma; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph. (2019) A New Multi-spectral Iris Acquisition Sensor for Biometric Verification and Presentation Attack Detection . IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Ramachandra, Raghavendra; Venkatesh, Sushma; Bylappa Raja, Kiran; Busch, Christoph. (2019) Towards making Morphing Attack Detection robust using hybrid Scale-Space Colour Texture Features. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Das, Abhijit; Galdi, Chiara; Han, Hu; Ramachandra, Raghavendra; Dugelay, Jean-Luc; Dantcheva, An-titza. (2019) Recent Advances in Biometric Technology for Mobile Devices. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Vetrekar, Narayan; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Gad, Rajendra S. (2019) Detecting Glass in Ocular Region Based on Grassmann Manifold Projection Metric Learning by Exploring Spectral Imaging. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Khodabakhsh, Ali; Ramachandra, Raghavendra; Busch, Christoph. (2019) Subjective Evaluation of Media Consumer Vulnerability to Fake Audiovisual Content. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Vetrekar, Narayan; Ramachandra, Raghavendra; Raja, Kiran; Gad, Rajendra S. (2019) Multi-Spectral Imaging for Artificial Ripened Banana Detection. European Workshop on Visual Information Processing
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• 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)
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel

2018

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

2017

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

2016

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

2015

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

2014

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

2013

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

2012

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