Journals

Kevin Man Ho Cheng* and Ajay Kumar, “Contactless Biometric Identification using 3D Finger Knuckle Patterns,” IEEE Transactions on Pattern Analysis & Machine Intelligence, pp. 1868-1883, August 2020

Hanzhuo Tan* and Ajay Kumar, “Towards More Accurate Contactless Fingerprint Minutiae Extraction and Pose-Invariant Matching,” IEEE Transactions on Information Forensics and Security, pp. 3924 - 3937, July 2020

Zijing Zhao* and Ajay Kumar, “A Deep Learning based Unified Framework to Detect, Segment and Recognize Irises using Spatially Corresponding Features,” Pattern Recognition, pp. 546-557, October 2019

Ajay Kumar, “Toward Pose Invariant and Completely Contactless Finger Knuckle Recognition,” IEEE Transactions on Biometrics, Behavior, and Identity Science, pp. 201–209, July 2019

Qian Zheng*, Ajay Kumar, Boxin Shi and Gang Pan, “Numerical Reflectance Compensation for Non-Lambertian Photometric Stereo,” IEEE Transactions on Image Processing, pp. 3177-3191, July 2019

Chenhao Lin* and Ajay Kumar, “A CNN-based Famework for Accurately Matching Contactless to Contact-based Fingerprints,” IEEE Transactions on Information Forensics and Security, pp. 662-676, March 2019

Kevin H. M. Cheng* and Ajay Kumar, “Revisiting Outlier Rejection Approach for Non-Lambertian Photometric Stereo,” IEEE Transactions on Image Processing, pp. 1544-1555, March 2019

Ajay Kumar, “Toward More Accurate Matching of Contactless Palmprint Images Under Less Constrained Environments,” IEEE Transactions on Information Forensics & Security, pp. 34-47, January 2019

Chenhao Lin* and Ajay Kumar, “Contactless and Partial 3D Fingerprint Recognition using Multi-view Deep Representation,” Pattern Recognition, pp. 314-327, December 2018

Chenhao Lin* and Ajay Kumar, “Tetrahedron Based Fast 3D Fingerprint Identification Using Colored LEDs Illumination,” IEEE Transactions on Pattern Analysis & Machine Intelligence, pp. 3022-3033, December 2018

Kuo Wang* and Ajay Kumar, “Towards More Accurate Iris Recognition using Dilated Residual Features,” IEEE Transactions on Information Forensics & Security, pp. 3233 – 3245, December 2018

Zijing Zhao* and Ajay Kumar, “Improving Periocular Recognition by Explicit Attention to Critical Regions in Deep Neural Network,” IEEE Transactions on Information Forensics & Security, pp. 2937-2952, December 2018

Chenhao Lin* and Ajay Kumar, “Matching Contactless and Contact-Based Conventional Fingerprint Images for Biometrics Identification,” IEEE Transactions on Image Processing, pp. 2008-2020, May 2018

Cihui Xie and Ajay Kumar, “Finger Vein Identification using Convolutional Neural Network and Supervised Discrete Hashing,” Pattern Recognition Letters, pp. 1-10, January 2018

Zijing Zhao* and Ajay Kumar, “Accurate periocular recognition under less constrained environment using semantics-assisted convolutional neural network,” IEEE Transactions on Information Forensics & Security, pp. 1017-1030, May 2017

N. Pattabhi Ramiah and Ajay Kumar, “Towards more accurate iris recognition using cross-spectral matching,” IEEE Transactions on Image Processing, pp. 208-221, January 2017

Ajay Kumar and Zhihuan Xu, “Personal identification using minor knuckle patterns from palm dorsal surface,” IEEE Trans. Information Forensics & Security, pp. 2338-2348, October 2016

Qian Zheng*, Ajay Kumar and Gang Pan, “A 3D Feature Descriptor Recovered from a Single 2D Palmprint Image,” IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 38, pp. 1272-1279, July 2016

Qian Zheng*, Ajay Kumar and Gang Pan, “Suspecting Less and Achieving More: New Insights on Palmprint Identification for Faster and more Accurate Palmprint Matching,” IEEE Transactions on Information Forensics & Security, vol. 11, pp. 633-641, March 2016

Aythami Morales, Ajay Kumar and Miguel A. Ferrer, “Interdigital palm region for biometric identification,” Computer Vision and Image Understanding, vol. 142, pp. 125-133, January 2016

Ajay Kumar and Bichai Wang, “Recovering and matching minutiae patterns from finger knuckle images,” Pattern Recognition Letters, vol. 68, pp. 361-367, December 2015

Ajay Kumar and Cyril Kwong, “Towards contactless, low-cost and accurate 3D fingerprint identification,” IEEE Trans. Pattern Analysis & Machine Intelligence, vol. 37, pp. 681-696, March 2015

Chun-Wei Tan* and Ajay Kumar, “Accurate iris recognition at-a-distance using stablized iris encoding and Zernike moments phase features,” IEEE Trans. Image Processing, vol. 23, pp. 3962-3974, September 2014

Chun-Wei Tan* and Ajay Kumar, “Efficient and accurate at-a-distance iris recognition using geometric key based iris encoding,” IEEE Trans. Information Forensics & Security, vol. 9, pp. 1518-1526, September 2014

Ajay Kumar, “Importance of being unique from finger dorsal patterns: Exploring minor finger knuckle patterns in verifying human identities,” IEEE Trans. Information Forensics & Security, vol. 9, pp. 1288-1298, August 2014

Chun-Wei Tan* and Ajay Kumar, “Towards online iris and periocular recognition under relaxed imaging constraints,” IEEE Trans. Image Processing, vol. 22, pp. 3751-3765, October 2013

Ajay Kumar and Tak-Shing Chan, “Robust ear identification using sparse representation of local texture descriptors,” Pattern Recognition, vol. 46, issue 1, pp. 73-85, January 2013

Tak-Shing Chan and Ajay Kumar, “Reliable ear identification using 2D quadrature filters,” Pattern Recognition Letters, vol. 33, issue 14, pp. 1870-1881, October 2012

Chun-Wei Tan* and Ajay Kumar, “A unified framework for automated iris segmentation using distantly acquired face images,” IEEE Trans. Image Processing, vol. 21, no. 9, pp. 4068-4078, September 2012

Ajay Kumar and Yingbo Zhou, “Human identification using finger images,” IEEE Trans. Image Processing, vol. 21, pp. 2228-2244, April 2012

Ajay Kumar and Chenye Wu, “Automated human identification using ear imaging,” Pattern Recognition, vol. 41, no. 5, March 2012

Yingbo Zhou and Ajay Kumar, “Human identification using palm-vein images,” IEEE Trans. Information Forensics & Security, vol. 6, no. 4, pp. 1159-1274, December 2011

Aythami Morales, Miguel A. Ferrer, and Ajay Kumar, “Towards contactless palmprint authentication,” IET Computer Vision, vol. 5, no. 6, pp. 407-416, November 2011

Ajay Kumar and Sumit Shekhar, “Personal identification using multibiometrics rank-level fusion,” IEEE Trans. Systems, Man, and Cybernetics: Part C, pp. 743-752, vol. 41, no. 5, September 2011

Vivek Kanhangad, Ajay Kumar, and David Zhang, “Contactless and pose invariant biometric identification using hand surface,” IEEE Trans. Image Processing, vol. 6, no. 3, pp. 1014, 1027, September 2011

Vivek Kanhangad, Ajay Kumar, and David Zhang, “A unified framework for contactless hand identification,” IEEE Trans. Information Forensics & Security, vol. 20, no. 5, pp. 1415-1424, May 2011

Ajay Kumar and Arun Passi, “Comparison and combination of iris matchers for reliable personal authentication,” Pattern Recognition, vol. 43, no. 3, pp. 1016-1026, March 2010

Ajay Kumar and David Zhang, “Improving biometric authentication performance from the user quality,” IEEE Trans. Instrumentation & Measurement, vol. 59, pp. 730-735, March 2010

Ajay Kumar, Vivek Kanhangad, and David Zhang, “A new framework for adaptive multimodal biometrics management,” IEEE Trans. Information Forensics & Security, pp. 92-102, March 2010

David Zhang, Vivek Kanhangad, Luo Nan, and Ajay Kumar, “Robust palmprint verification using 2D and 3D features,” Pattern Recognition, vol. 43, no. 1, pp. 358-368, January 2010

Ajay Kumar and K. V. Prathyusha, “Personal authentication using hand vein triangulation and knuckle shape,” IEEE Trans. Image Processing, vol. 38, pp. 2127-2136, September 2009

Ajay Kumar and Yingbo Zhou, “Personal identification using finger knuckle orientation features,” Electronics Letters, vol. 45, no. 20, September 2009

Amioy Kumar and Ajay Kumar, “Development of a new cryptographic construct using palmprint based fuzzy vault,” EURASIP Journal on Advances in Signal Processing, ASP/967046, September 2009

Jay Bhatnagar and Ajay Kumar, “On estimating performance indices for biometric identification,” Pattern Recognition, vol. 42, no. 9, pp. 1803-1815, September 2009

Ajay Kumar and David Zhang, “User authentication using fusion of face and palmprint,” Intl. J. Image & Graphics, vol. 9., no. 2, pp. 251-270, April 2009

Ajay Kumar and Ch. Ravikanth, “Personal authentication using finger knuckle surface,” IEEE Trans. Information Forensics & Security, vol. 4, no. 1, pp. 98-110, March 2009

P. Venkata Reddy, Ajay Kumar, S. M. K. Rahman, and Tanvir Singh Mundra, “A new antispoofing approach for biometric devices,” IEEE Trans. Biomedical Circuits & Sys., vol. 2, no. 4, pp. 284-293, December 2008

Vivek Kanhangad, Ajay Kumar, and David Zhang, “Comments on an adaptive multimodal biometric management algorithm,” IEEE Trans. Systems, Man, and Cybernetics: Part C, vol. 38, no. 5, pp. 438-440, November 2008

Tanvir Singh Mundra and Ajay Kumar, “Micro power battery state-of-charge monitor,” IEEE Trans Consumer Electronics, vol. 54, no. 2, pp. 623-630, May 2008

Ajay Kumar, “Computer vision based fabric defect detection: a survey,” IEEE Trans. Industrial Electronics, vol. 55, no. 1, pp. 348-363, January 2008

Tanvir Singh Mundra and Ajay Kumar, “An innovative battery charger for the safe charging of NiMH/NiCd batteries,” IEEE Trans Consumer Electronics, vol. 53, no. 3, pp. 1044-1052, August 2007

Ajay Kumar and David Zhang, “Hand geometry recognition using entropy-based discretization,” IEEE Trans. Information Forensics & Security, vol. 2, pp. 181-187, June 2007

Ajay Kumar, David C. M. Wong, Helen C. Shen, and Anil K. Jain, “Personal authentication using hand images,” Pattern Recognition Letters, vol. 27, pp. 1478-1486, October 2006

Ajay Kumar and David Zhang, “Personal recognition using hand-shape and texture,” IEEE Trans. Image Process, vol. 15, no. 8, pp. 2454-2461, August 2006

Ajay Kumar and David Zhang, “Integrating shape and texture for hand verification,” Intl. J. Image & Graphics, vol. 6., no. 1, pp. 1-13, January 2006

Ajay Kumar and David Zhang, “Personal authentication using multiple palmprint representation,” Pattern Recognition, vol. 38, pp. 1695-1704, October 2005

Ajay Kumar, “Neural network based defection of local textile defects,” Pattern Recognition, vol. 36, pp. 1645-1659, July 2003

Ajay Kumar and Grantham Pang, “Defect detection in textured materials using optimized filters,” IEEE Trans. Systems, Man, and Cybernetics: Part B, Cybernetics, vol. 32, no. 5, pp. 553-570, October 2002

Ajay Kumar and Grantham Pang, “Defect detection in textured materials using Gabor filters,” IEEE Trans. Industry Applications, vol. 38, no. 2, pp. 425-440, March 2002

Ajay Kumar and Grantham Pang, “Fabric defect segmentation using multi-channel blob detectors,” Optical Engineering, vol. 39, no. 12, pp. 3176-3190, December 2000