Ajay Kumar, The Hong Kong Polytechnic University, Hong Kong

Iris Recognition

A Deep Learning based Unified Framework to Detect, Segment and Recognize Irises Using Spatially Corresponding Features
Zijing Zhao, Ajay Kumar
Pattern Recognition, pp. 546-557, October 2019
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Improving Periocular Recognition by Explicit Attention to Critical Regions in Deep Neural Network
Zijing Zhao, Ajay Kumar
IEEE Transactions on Information Forensics & Security, pp. 2937-2952, December 2018
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Accurate Periocular Recognition under Less Constrained Environment using Semantics-assisted Convolutional Neural Network
Zijing Zhao, Ajay Kumar
IEEE Transactions on Information Forensics & Security, pp. 1017-1030, May 2017
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Towards More Accurate Iris Recognition using Cross-Spectral Matching
N. Pattabhi Ramiah, Ajay Kumar
IEEE Transactions on Image Processing, pp. 208-221, Janurary 2017
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Towards More Accurate Iris Recognition Using Deeply Learned Spatially Corresponding Features
Zijing Zhao, Ajay Kumar
International Conference on Computer Vision, ICCV 2017, pp. 1-10, Venice, Italy, Italy, October 2017
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An Accurate Iris Segmentation Framework under Relaxed Imaging Constraints using Total Variation Model
Zijing Zhao, Ajay Kumar
Proc. ICCV 2015, pp. 3828-3836, Santiago, Chile, December 2015
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A Unified Framework for Automated Iris Segmentation Using Distantly Acquired Face Images
Chun-Wei Tan and Ajay Kumar
IEEE Trans. Image Processing, vol. 21, no. 9, pp. 4068-4078, September 2012
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3D Fingerprint Reconstruction

Numerical Reflectance Compensation for Non-Lambertian Photometric Stereo
Qian Zheng, Ajay Kumar, Boxin Shi and Gang Pan
IEEE Transactions on Image Processing, pp. 3177-3191, July 2019
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Revisiting Outlier Rejection Approach for Non-Lambertian Photometric Stereo
Kevin Ho Man Cheng and Ajay Kumar
IEEE Transactions on Image Processing, pp. 1544-1555, March 2019
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Contactless Fingerprint Identification

Minutiae Attention Network with Reciprocal Distance Loss for Contactless to Contact-based Fingerprint Identification
Hanzhuo Tan and Ajay Kumar
IEEE Transactions on Information Forensics and Security, pp. 3299 - 3311, April 2021
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Towards More Accurate Contactless Fingerprint Minutiae Extraction and Pose-Invariant Matching
Hanzhuo Tan and Ajay Kumar
IEEE Transactions on Information Forensics & Security, pp. 3924 - 3937, July 2020
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Deep Fake Fingerprint Generation and Detection

Think Twice Before Detecting GAN-generated Fake Images from their Spectral Domain Imprints
Chengdong Dong, Ajay Kumar, Eryun Liu
IEEE International Conference on Computer Vision and Pattern Recognition, CVPR 2022, New Orleans, June 2022, USA, June 2021
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Synthetic Finger Vein Generator

Generating and Analyzing Synthetic Finger-vein Images
Fieke Hillerstorm, Ajay Kumar and Raymond Veldhuis
Proc. BIOSIG 2014, Darmstadt, Germany, September 2014
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Finger Vein Identification

Finger Vein Identification using Convolutional Neural Network and Supervised Discrete Hashing
Cihui Xie and Ajay Kumar
Pattern Recognition Letters, pp. 1-10, January 2018
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Minutiae Recovery from Finger Knuckle Patterns

Recovering and Matching Minutiae Patterns From Finger Knuckle Images
Ajay Kumar and Bichai Wang
Pattern Recognition Letters, vol. 68, pp. 361-367, December 2015
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Contactless Finger Knuckle Identification

Deep Feature Collaboration for Challenging 3D Finger Knuckle Identification
Kevin Ho Man Cheng and Ajay Kumar
IEEE Transactions on Information Forensics and Security, pp. 1158 - 1173, September 2021
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Efficient and Accurate 3D Finger Knuckle Matching using Surface Key Points
Kevin Ho Man Cheng and Ajay Kumar
IEEE Transactions on Image Processing, pp. 8903 - 8915, September 2020
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3D Palmprint Matching

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

A 3D Feature Descriptor Recovered from a Single 2D Palmprint Image
Qian Zheng, Ajay Kumar and Gang Pan
IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 38, pp. 1272-1279, July 2016
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Suspecting Less and Achieving More: New Insights on Palmprint Identification for Faster and more Accurate Palmprint Matching
Qian Zheng, Ajay Kumar and Gang Pan
IEEE Transactions on Information Forensics & Security, vol. 11, pp. 633-641, March 2016
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Dynamic Multimodal Biometircs Fusion

Comments on An Adaptive Multimodal Biometric Management Algorithm
Vivek Kanhangad, Ajay Kumar, and David Zhang
IEEE Trans. Systems, Man, and Cybernetics: Part C, vol. 38, no. 5, pp. 438-440, November 2008
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Software and Tools