Ajay Kumar

133 papers A* 9B 13C 1Misc 2Journal 76Unranked 26
YearRankTypeTitle / Venue / Authors
2025 J jnl
A Mixed-Primitive-based Gaussian Splatting Method for Surface Reconstruction.
CoRR
Haoxuan Qu, Yujun Cai, Hossein Rahmani, Ajay Kumar, Junsong Yuan, Jun Liu
2025 J jnl
Bridging Dimensions in Fingerprints to Advance Distinctiveness: Recovering 3D Minutiae From a Single Contactless 2D Fingerprint Image.
IEEE Trans. Pattern Anal. Mach. Intell.
Chengdong Dong, Ajay Kumar
2025 J jnl
Insights on 'Complex-Valued Iris Recognition Network'.
IEEE Trans. Pattern Anal. Mach. Intell.
Ajay Kumar
2025 A* conf
Towards Explainable and Unprecedented Accuracy in Matching Challenging Finger Crease Patterns.
CVPR
Zhenyu Zhou, Chengdong Dong, Ajay Kumar
2024 J jnl
Finger-Knuckle Assisted Slap Fingerprint Identification System for Higher Security and Convenience.
IEEE Trans. Inf. Forensics Secur.
Zhenyu Zhou, Ajay Kumar
2024 J jnl
Towards More Accurate Fake Detection on Images Generated from Advanced Generative and Neural Rendering Models.
CoRR
Chengdong Dong, Vijayakumar Bhagavatula, Zhenyu Zhou, Ajay Kumar
2023 A* conf
A Characteristic Function-Based Method for Bottom-Up Human Pose Estimation.
CVPR
Haoxuan Qu, Yujun Cai, Lin Geng Foo, Ajay Kumar, Jun Liu
2023 J jnl
BEST: Building evidences from scattered templates for accurate contactless palmprint recognition.
Pattern Recognit.
Yulin Feng, Ajay Kumar
2023 J jnl
Completely Contactless and Online Finger Knuckle Identification for Real World Applications.
IEEE J. Sel. Top. Signal Process.
Zhenyu Zhou, Ajay Kumar
2023 J jnl
Detecting Locally, Patching Globally: An End-to-End Framework for High Speed and Accurate Detection of Fingerprint Minutiae.
IEEE Trans. Inf. Forensics Secur.
Yulin Feng, Ajay Kumar
2023 J jnl
Synthesis of Multi-View 3D Fingerprints to Advance Contactless Fingerprint Identification.
IEEE Trans. Pattern Anal. Mach. Intell.
Chengdong Dong, Ajay Kumar
2022 A* conf
Think Twice Before Detecting GAN-generated Fake Images from their Spectral Domain Imprints.
CVPR
Chengdong Dong, Ajay Kumar, Eryun Liu
2021 J jnl
Accurate 3D Finger Knuckle Recognition Using Auto-Generated Similarity Functions.
IEEE Trans. Biom. Behav. Identity Sci.
Kevin H. M. Cheng, Ajay Kumar
2021 J jnl
Deep Feature Collaboration for Challenging 3D Finger Knuckle Identification.
IEEE Trans. Inf. Forensics Secur.
Kevin H. M. Cheng, Ajay Kumar
2021 J jnl
Minutiae Attention Network With Reciprocal Distance Loss for Contactless to Contact-Based Fingerprint Identification.
IEEE Trans. Inf. Forensics Secur.
Hanzhuo Tan, Ajay Kumar
2021 J jnl
Periocular-Assisted Multi-Feature Collaboration for Dynamic Iris Recognition.
IEEE Trans. Inf. Forensics Secur.
Kuo Wang, Ajay Kumar
2020 J jnl
Contactless Biometric Identification Using 3D Finger Knuckle Patterns.
IEEE Trans. Pattern Anal. Mach. Intell.
Kevin H. M. Cheng, Ajay Kumar
2020 J jnl
Contactless Palmprint Identification Using Deeply Learned Residual Features.
IEEE Trans. Biom. Behav. Identity Sci.
Yang Liu, Ajay Kumar
2020 B conf
Distinctive Feature Representation for Contactless 3D Hand Biometrics using Surface Normal Directions.
IJCB
Kevin H. M. Cheng, Ajay Kumar
2020 J jnl
Efficient and Accurate 3D Finger Knuckle Matching Using Surface Key Points.
IEEE Trans. Image Process.
Kevin H. M. Cheng, Ajay Kumar
2020 J jnl
Segmentation-Aware and Adaptive Iris Recognition.
CoRR
Kuo Wang, Ajay Kumar
2020 J jnl
Towards More Accurate Contactless Fingerprint Minutiae Extraction and Pose-Invariant Matching.
IEEE Trans. Inf. Forensics Secur.
Hanzhuo Tan, Ajay Kumar
2019 J jnl
A CNN-Based Framework for Comparison of Contactless to Contact-Based Fingerprints.
IEEE Trans. Inf. Forensics Secur.
Chenhao Lin, Ajay Kumar
2019 J jnl
A deep learning based unified framework to detect, segment and recognize irises using spatially corresponding features.
Pattern Recognit.
Zijing Zhao, Ajay Kumar
2019 J jnl
Cross-spectral iris recognition using CNN and supervised discrete hashing.
Pattern Recognit.
Kuo Wang, Ajay Kumar
2019 J jnl
Finger vein identification using Convolutional Neural Network and supervised discrete hashing.
Pattern Recognit. Lett.
Cihui Xie, Ajay Kumar
2019 — conf
Multibiometrics User Recognition using Adaptive Cohort Ranking.
ICB
Abhinav Anand, Amioy Kumar, Ajay Kumar
2019 J jnl
Numerical Reflectance Compensation for Non-Lambertian Photometric Stereo.
IEEE Trans. Image Process.
Qian Zheng, Ajay Kumar, Boxin Shi, Gang Pan
2019 J jnl
Revisiting Outlier Rejection Approach for Non-Lambertian Photometric Stereo.
IEEE Trans. Image Process.
Kevin H. M. Cheng, Ajay Kumar
2019 J jnl
Toward More Accurate Iris Recognition Using Dilated Residual Features.
IEEE Trans. Inf. Forensics Secur.
Kuo Wang, Ajay Kumar
2019 J jnl
Toward More Accurate Matching of Contactless Palmprint Images Under Less Constrained Environments.
IEEE Trans. Inf. Forensics Secur.
Ajay Kumar
2019 J jnl
Toward Pose Invariant and Completely Contactless Finger Knuckle Recognition.
IEEE Trans. Biom. Behav. Identity Sci.
Ajay Kumar
2018 J jnl
A Deep Learning based Framework to Detect and Recognize Humans using Contactless Palmprints in the Wild.
CoRR
Yang Liu, Ajay Kumar
2018 B conf
Advancing Surface Feature Encoding and Matching for More Accurate 3D Biometric Recognition.
ICPR
Kevin H. M. Cheng, Ajay Kumar
2018 — book
Contactless 3D Fingerprint Identification
Ajay Kumar
2018 — conf
Contactless 3D fingerprint identification without 3D reconstruction.
IWBF
Qian Zheng, Ajay Kumar, Gang Pan
2018 J jnl
Contactless and partial 3D fingerprint recognition using multi-view deep representation.
Pattern Recognit.
Chenhao Lin, Ajay Kumar
2018 J jnl
Improving Periocular Recognition by Explicit Attention to Critical Regions in Deep Neural Network.
IEEE Trans. Inf. Forensics Secur.
Zijing Zhao, Ajay Kumar
2018 J jnl
Matching Contactless and Contact-Based Conventional Fingerprint Images for Biometrics Identification.
IEEE Trans. Image Process.
Chenhao Lin, Ajay Kumar
2018 J jnl
Tetrahedron Based Fast 3D Fingerprint Identification Using Colored LEDs Illumination.
IEEE Trans. Pattern Anal. Mach. Intell.
Chenhao Lin, Ajay Kumar
2017 J jnl
Accurate Periocular Recognition Under Less Constrained Environment Using Semantics-Assisted Convolutional Neural Network.
IEEE Trans. Inf. Forensics Secur.
Zijing Zhao, Ajay Kumar
2017 B conf
Multi-Siamese networks to accurately match contactless to contact-based fingerprint images.
IJCB
Chenhao Lin, Ajay Kumar
2017 J jnl
Toward More Accurate Iris Recognition Using Cross-Spectral Matching.
IEEE Trans. Image Process.
Pattabhi Ramaiah Nalla, Ajay Kumar
2017 A* conf
Towards More Accurate Iris Recognition Using Deeply Learned Spatially Corresponding Features.
ICCV
Zijing Zhao, Ajay Kumar
2016 J jnl
A 3D Feature Descriptor Recovered from a Single 2D Palmprint Image.
IEEE Trans. Pattern Anal. Mach. Intell.
Qian Zheng, Ajay Kumar, Gang Pan
2016 J jnl
A Cell-Array-Based Multibiometric Cryptosystem.
IEEE Access
Amioy Kumar, Ajay Kumar
2016 J jnl
Adaptive management of multimodal biometrics fusion using ant colony optimization.
Inf. Fusion
Amioy Kumar, Ajay Kumar
2016 B conf
Improving cross sensor interoperability for fingerprint identification.
ICPR
Chenhao Lin, Ajay Kumar
2016 J jnl
Interdigital palm region for biometric identification.
Comput. Vis. Image Underst.
Aythami Morales, Ajay Kumar, Miguel A. Ferrer
2016 — conf
On matching cross-spectral periocular images for accurate biometrics identification.
BTAS
N. Pattabhi Ramaiah, Ajay Kumar
2016 J jnl
Personal Identification Using Minor Knuckle Patterns From Palm Dorsal Surface.
IEEE Trans. Inf. Forensics Secur.
Ajay Kumar, Zhihuan Xu
2016 J jnl
Suspecting Less and Doing Better: New Insights on Palmprint Identification for Faster and More Accurate Matching.
IEEE Trans. Inf. Forensics Secur.
Qian Zheng, Ajay Kumar, Gang Pan
2015 A* conf
An Accurate Iris Segmentation Framework Under Relaxed Imaging Constraints Using Total Variation Model.
ICCV
Zijing Zhao, Ajay Kumar
2015 — ch.
Anatomy of the Hand.
Encyclopedia of Biometrics
Amioy Kumar, Tanvir Singh Mundra, Ajay Kumar
2015 — ch.
Fusion, Rank-Level.
Encyclopedia of Biometrics
Ajay Kumar
2015 J jnl
Recovering and matching minutiae patterns from finger knuckle images.
Pattern Recognit. Lett.
Ajay Kumar, Bichai Wang
2015 J jnl
Towards Contactless, Low-Cost and Accurate 3D Fingerprint Identification.
IEEE Trans. Pattern Anal. Mach. Intell.
Ajay Kumar, Cyril Kwong
2014 J jnl
Accurate Iris Recognition at a Distance Using Stabilized Iris Encoding and Zernike Moments Phase Features.
IEEE Trans. Image Process.
Chun-Wei Tan, Ajay Kumar
2014 B conf
Adaptive Security for Human Surveillance Using Multimodal Open Set Biometric Recognition.
ICPR
Amioy Kumar, Ajay Kumar
2014 — conf
Can We Use Second Minor Finger Knuckle Patterns to Identify Humans?
CVPR Workshops
Ajay Kumar, Zhihuan Xu
2014 J jnl
Efficient and Accurate At-a-Distance Iris Recognition Using Geometric Key-Based Iris Encoding.
IEEE Trans. Inf. Forensics Secur.
Chun-Wei Tan, Ajay Kumar
2014 J jnl
Importance of Being Unique From Finger Dorsal Patterns: Exploring Minor Finger Knuckle Patterns in Verifying Human Identities.
IEEE Trans. Inf. Forensics Secur.
Ajay Kumar
2014 — conf
Integrating ocular and iris descriptors for fake iris image detection.
IWBF
Chun-Wei Tan, Ajay Kumar
2014 B conf
Periocular Recognition Using Unsupervised Convolutional RBM Feature Learning.
ICPR
Lei Nie, Ajay Kumar, Song Zhan
2013 — conf
Adaptive and localized iris weight map for accurate iris recognition under less constrained environments.
BTAS
Chun-Wei Tan, Ajay Kumar
2013 J jnl
Robust ear identification using sparse representation of local texture descriptors.
Pattern Recognit.
Ajay Kumar, Tak-Shing Chan
2013 A* conf
Towards Contactless, Low-Cost and Accurate 3D Fingerprint Identification.
CVPR
Ajay Kumar, Cyril Kwong
2013 J jnl
Towards Online Iris and Periocular Recognition Under Relaxed Imaging Constraints.
IEEE Trans. Image Process.
Chun-Wei Tan, Ajay Kumar
2012 J jnl
Automated human identification using ear imaging.
Pattern Recognit.
Ajay Kumar, Chenye Wu
2012 — conf
Can we use minor finger knuckle images to identify humans?
BTAS
Ajay Kumar
2012 — conf
Efficient iris segmentation using Grow-Cut algorithm for remotely acquired iris images.
BTAS
Chun-Wei Tan, Ajay Kumar
2012 J jnl
Human Identification Using Finger Images.
IEEE Trans. Image Process.
Ajay Kumar, Yingbo Zhou
2012 — conf
Human identification from at-a-distance face images using sparse representation of local iris features.
ICB
Ajay Kumar, Tak-Shing Chan, Chun-Wei Tan
2012 B conf
Human identification from at-a-distance images by simultaneously exploiting iris and periocular features.
ICPR
Chun-Wei Tan, Ajay Kumar
2012 — conf
Iris recognition using quaternionic sparse orientation code (QSOC).
CVPR Workshops
Ajay Kumar, Tak-Shing Chan
2012 J jnl
Reliable ear identification using 2-D quadrature filters.
Pattern Recognit. Lett.
Tak-Shing Chan, Ajay Kumar
2012 J jnl
Unified Framework for Automated Iris Segmentation Using Distantly Acquired Face Images.
IEEE Trans. Image Process.
Chun-Wei Tan, Ajay Kumar
2011 J jnl
A Unified Framework for Contactless Hand Verification.
IEEE Trans. Inf. Forensics Secur.
Vivek Kanhangad, Ajay Kumar, David Zhang
2011 — conf
Automated segmentation of iris images using visible wavelength face images.
CVPR Workshops
Chun-Wei Tan, Ajay Kumar
2011 J jnl
Contactless and Pose Invariant Biometric Identification Using Hand Surface.
IEEE Trans. Image Process.
Vivek Kanhangad, Ajay Kumar, David Zhang
2011 — conf
Contactless fingerprint identification using level zero features.
CVPR Workshops
Ajay Kumar, Yingbo Zhou
2011 J jnl
Human Identification Using Palm-Vein Images.
IEEE Trans. Inf. Forensics Secur.
Yingbo Zhou, Ajay Kumar
2011 B conf
Incorporating color information for reliable palmprint authentication.
ICIP
Aythami Morales, Ajay Kumar, Miguel A. Ferrer
2011 J jnl
Personal Identification Using Multibiometrics Rank-Level Fusion.
IEEE Trans. Syst. Man Cybern. Part C
Ajay Kumar, Sumit Shekhar
2010 J jnl
A new framework for adaptive multimodal biometrics management.
IEEE Trans. Inf. Forensics Secur.
Ajay Kumar, Vivek Kanhangad, David Zhang
2010 J jnl
Comparison and combination of iris matchers for reliable personal authentication.
Pattern Recognit.
Ajay Kumar, Arun Passi
2010 — conf
Contactless palm vein identification using multiple representations.
BTAS
Yingbo Zhou, Ajay Kumar
2010 — ed.
Ethics and Policy of Biometrics - Third International Conference on Ethics and Policy of Biometrics and International Data Sharing, ICEB 2010, Hong Kong, January 4-5, 2010. Revised Papers
ICEB
Ajay Kumar, David Zhang
2010 — conf
Human hand identification with 3D hand pose variations.
CVPR Workshops
Vivek Kanhangad, Ajay Kumar, David Zhang
2010 — conf
Improved palmprint authentication using contactless imaging.
BTAS
Aythami Morales Moreno, Miguel A. Ferrer, Ajay Kumar
2010 J jnl
Improving Biometric Authentication Performance From the User Quality.
IEEE Trans. Instrum. Meas.
Ajay Kumar, David Zhang
2010 B conf
Palmprint recognition using rank level fusion.
ICIP
Ajay Kumar, Sumit Shekhar
2010 B conf
Personal Identification from Iris Images Using Localized Radon Transform.
ICPR
Yingbo Zhou, Ajay Kumar
2010 J jnl
Robust palmprint verification using 2D and 3D features.
Pattern Recognit.
David Zhang, Vivek Kanhangad, Nan Luo, Ajay Kumar
2009 — ch.
Anatomy of Hand.
Encyclopedia of Biometrics
Amioy Kumar, Tanvir Singh Mundra, Ajay Kumar
2009 — conf
Combining 2D and 3D hand geometry features for biometric verification.
CVPR Workshops
Vivek Kanhangad, Ajay Kumar, David Zhang
2009 J jnl
Development of a New Cryptographic Construct Using Palmprint-Based Fuzzy Vault.
EURASIP J. Adv. Signal Process.
Amioy Kumar, Ajay Kumar
2009 — ch.
Fusion, Rank-Level.
Encyclopedia of Biometrics
Ajay Kumar
2009 J jnl
On estimating performance indices for biometric identification.
Pattern Recognit.
Jay R. Bhatnagar, Ajay Kumar
2009 J jnl
Personal Authentication Using Hand Vein Triangulation and Knuckle Shape.
IEEE Trans. Image Process.
Ajay Kumar, K. Venkata Prathyusha
2009 J jnl
Personal authentication using finger knuckle surface.
IEEE Trans. Inf. Forensics Secur.
Ajay Kumar, Ch. Ravikanth
2009 J jnl
User Authentication Using Fusion of Face and Palmprint.
Int. J. Image Graph.
Ajay Kumar, David Zhang
2008 J jnl
A New Antispoofing Approach for Biometric Devices.
IEEE Trans. Biomed. Circuits Syst.
P. Venkata Reddy, Ajay Kumar, S. Rahman, Tanvir Singh Mundra
2008 J jnl
Comments on "An Adaptive Multimodal Biometric Management Algorithm".
IEEE Trans. Syst. Man Cybern. Part C
Vivek Kanhangad, Ajay Kumar, David Zhang
2008 — conf
Comparison and combination of iris matchers for reliable personal identification.
CVPR Workshops
Ajay Kumar, Arun Passi
2008 J jnl
Computer-Vision-Based Fabric Defect Detection: A Survey.
IEEE Trans. Ind. Electron.
Ajay Kumar
2008 — conf
Incorporating Cohort Information for Reliable Palmprint Authentication.
ICVGIP
Ajay Kumar
2008 C conf
Incorporating user quality for performance improvement in hand identification.
ICARCV
Ajay Kumar, David Zhang
2008 J jnl
Micro power battery state-of-charge monitor.
IEEE Trans. Consumer Electron.
Tanvir Singh Mundra, Ajay Kumar
2008 B conf
Multimodal biometrics management using adaptive score-level combination.
ICPR
Ajay Kumar, Vivek Kanhangad, David Zhang
2008 B conf
Online personal identification in night using multiple face representations.
ICPR
Ajay Kumar, T. Srikanth
2008 B conf
Tongue line extraction.
ICPR
Laura Li Liu, David Zhang, Ajay Kumar, Xiangqian Wu
2007 A* conf
A Novel Approach to Improve Biometric Recognition Using Rank Level Fusion.
CVPR
Jay R. Bhatnagar, Ajay Kumar, Nipun Saggar
2007 J jnl
An Innovative Battery Charger for Safe Charging of NiMH/NiCd Batteries.
IEEE Trans. Consumer Electron.
Tanvir Singh Mundra, Ajay Kumar
2007 A* conf
Biometric Authentication using Finger-Back Surface.
CVPR
Ch. Ravikanth, Ajay Kumar
2007 — conf
Biometric Recognition using Entropy-Based Discretization.
ICASSP (2)
Ajay Kumar, David Zhang
2007 J jnl
Hand-Geometry Recognition Using Entropy-Based Discretization.
IEEE Trans. Inf. Forensics Secur.
Ajay Kumar, David Zhang
2007 A* conf
Improving Iris Identification using User Quality and Cohort Information.
CVPR
Arun Passi, Ajay Kumar
2007 — conf
On Some Performance Indices for Biometric Identification System.
ICB
Jay R. Bhatnagar, Ajay Kumar
2006 — conf
Combining Fingerprint, Palmprint and Hand-Shape for User Authentication.
ICPR (4)
Ajay Kumar, David Zhang
2006 — conf
Estimating Sample Size Requirements for Reliable Personal Authentication Using User-Specific Samples.
CVPR Workshops
Jay R. Bhatnagar, Ajay Kumar
2006 J jnl
Integrating Shape and Texture for Hand Verification.
Int. J. Image Graph.
Ajay Kumar, David Zhang
2006 J jnl
Personal authentication using hand images.
Pattern Recognit. Lett.
Ajay Kumar, David C. M. Wong, Helen C. Shen, Anil K. Jain
2006 J jnl
Personal recognition using hand shape and texture.
IEEE Trans. Image Process.
Ajay Kumar, David Zhang
2005 — conf
Biometric Recognition Using Feature Selection and Combination.
AVBPA
Ajay Kumar, David Zhang
2005 J jnl
Personal authentication using multiple palmprint representation.
Pattern Recognit.
Ajay Kumar, David Zhang
2004 Misc conf
Integrating shape and texture for hand verification.
ICIG
Ajay Kumar, David Zhang
2004 Misc conf
Palmprint identification using palmcodes.
ICIG
Ajay Kumar, Helen C. Shen
2003 — conf
Inspection of surface defects using optimal FIR filters.
ICASSP (2)
Ajay Kumar
2003 J jnl
Neural network based detection of local textile defects.
Pattern Recognit.
Ajay Kumar
2003 — conf
Personal Verification Using Palmprint and Hand Geometry Biometric.
AVBPA
Ajay Kumar, David C. M. Wong, Helen C. Shen, Anil K. Jain
2002 J jnl
Defect detection in textured materials using optimized filters.
IEEE Trans. Syst. Man Cybern. Part B
Ajay Kumar, Grantham K. H. Pang
2002 — conf
Texture inspection for defects using neural networks and support vector machines.
ICIP (3)
Ajay Kumar, Helen C. Shen