Nalini K. Ratha  Nalini K. Ratha photo       

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Research Staff Member, Biometrics Lead
Thomas J. Watson Research Center, Hawthorne, NY USA
  +1dash914dash784dash7136

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Professional Associations

Professional Associations:  ACM  |  IEEE

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More information:  IBM  |  IBM Research


2012

Fusing Biographical and Biometric Classifiers for Improved Person Identification
V Tyagi, H K Prasad, T Faruquie, L. V Subramaniam, N Ratha
IEEE/IAPR ICPR, IEEE, 2012

Matching Cross-Resolution Face Images Using Co-Transfer Learning
H. Bhat, R. Singh, M. Vatsa, N. Ratha
IEEE ICIP, IEEE, 2012

Cardiac Anatomy as a Biometric
N Codella, J Connell, N Ratha
IEEE ICIP, IEEE, 2012


2011

Secure and robust iris recognition using random projections and sparse representations
J Pillai, V Patel, R Chellappa, N Ratha
Pattern Analysis and Machine Intelligence, IEEE Transactions on pp. 99, 1--1, IEEE, 2011


2009

SLIC: Short-length iris codes
J E Gentile, N Ratha, J Connell
Biometrics: Theory, Applications, and Systems, 2009, pp. 1--5


2008


Multi-biometric cohort analysis for biometric fusion
G Aggarwal, N K Ratha, R M Bolle, R Chellappa
Acoustics, Speech and Signal Processing, 2008, pp. 5224--5227

Generating registration-free cancelable fingerprint templates
S Chikkerur, N K Ratha, J H Connell, R M Bolle
Biometrics: Theory, Applications and Systems, 2008, pp. 1--6

Methods and Apparatus for Generation Of Cancelable Face Template
J H Connell, N K Ratha
US Patent App. 11/971,643, 2008 - Google Patents, Google Patents
US Patent App. 11/971,643

Methods and Apparatus for Generation of Cancelable Fingerprint Template
R M Bolle, S S Chikkerur, J H Connell, N K Ratha
US Patent App. 11/971,634, 2008 - Google Patents, Google Patents
US Patent App. 11/971,634

Exploring ridge curvature for fingerprint indexing
S Biswas, N K Ratha, G Aggarwal, J Connell, NY Hawthorne
2nd IEEE International Conference on Biometrics: Theory, Applications and Systems, 2008, pp. 1--6

Median Filter Based Iris Encoding Technique
J Zuo, N K Ratha, J H Connell
Biometrics: Theory, Applications and Systems, 2008, pp. 1--6


Cancelable iris biometric
J Zuo, N K Ratha, J H Connell
Pattern Recognition, 2008, pp. 1--4

A new approach for iris segmentation
J Zuo, N K Ratha, J H Connell
Computer Vision and Pattern Recognition Workshops, 2008, pp. 1--6


2007

Introduction to the special issue on recent advances in biometric systems
K Bowyer, V Govindaraju, N Ratha
IEEE Trans. Systems, Man and Cybernetics-B 37(5), 1091--1095, 2007

Introduction to the Special Issue on Recent Advances in Biometric Systems [Guest Editorial]
KW Boyer, V Govindaraju, NK Ratha
IEEE Transactions on Systems, Man, and Cybernetics, Part B 37(5), 1091--1095, 2007

Anonymous and revocable fingerprint recognition
Faisal Farooq, Ruud M Bolle, Tsai-Yang Jea, Nalini Ratha
Computer Vision and Pattern Recognition, 2007. CVPR'07. IEEE Conference on, pp. 1--7

Security and accuracy trade-off in anonymous fingerprint recognition
Faisal Farooq, Nalini Ratha, Tsai-Yang Jea, Ruud Bolle
Biometrics: Theory, Applications, and Systems, 2007. BTAS 2007. First IEEE International Conference on, pp. 1--6

Advances in biometrics: sensors, algorithms and systems
N K Ratha, V Govindaraju
books.google.com, Springer-Verlag New York Inc, 2007

Generating cancelable fingerprint templates
N K Ratha, S Chikkerur, J H Connell, R M Bolle
Pattern Analysis and Machine Intelligence, IEEE Transactions on 29(4), 561--572, IEEE, 2007


2006

Biometric Technology for Human Identification
Patrick J Flynn, Sharath Pankanti
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Society of Photo Optical, 2006

Biometric verification: Looking beyond raw similarity scores
G Aggarwal, N K Ratha, R M Bolle
Workshop on Biometrics (CVPR), New York, pp. 31--36, 2006

Cancelable biometrics: A case study in fingerprints
N Ratha, J Connell, R M Bolle, S Chikkerur
Pattern Recognition, 2006, pp. 370--373


2005


To a combined fingerprint acquisition and control device
R M Bolle, N K Ratha, A Senior
US Patent 6,941,001, 2005 - Google Patents, Google Patents
US Patent 6,941,001

The Relationship Between the ROC Curve and the CMC
R Bolle, J Connell, S Pankanti, N Ratha, A Senior
Proceedings of Fourth IEEE Workshop on Automatic Identification Advanced Technologies (AutoID), pp. 15--20, 2005

Singular point detection in fingerprint images using linear phase portraits
Sharat Chikkerur, Sharath Pankanti, NK Ratha, Venu Govindaraju
International Journal of Computer Science and Security, AVBPA, 2005

Biometric Technology for Human Identification II
A K Jain, N K Ratha
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 2005

Performance evaluation in 1: 1 biometric engines
Ruud M Bolle, Nalini K Ratha, Sharath Pankanti
Advances in Biometric Person Authentication, pp. 27--46, Springer Berlin Heidelberg, 2005

Novel approaches for minutiae verification in fingerprint images
Sharat Chikkerur, Venu Govindaraju, Sharath Pankanti, Ruud Bolle, Nalini Ratha
Application of Computer Vision, 2005. WACV/MOTIONS'05 Volume 1. Seventh IEEE Workshops on, pp. 111--116

The relation between the ROC curve and the CMC
RM Bolle, JH Connell, S Pankanti, NK Ratha, AW Senior
Automatic Identification Advanced Technologies, 2005. Fourth IEEE Workshop on, pp. 15--20

Impact of singular point detection on fingerprint matching performance
S Chikkerur, N Ratha
Proc. IEEE AutoID, 207--212, Citeseer, 2005


2004

An evaluation of error confidence interval estimation methods
Ruud M Bolle, Nalini K Ratha, Sharath Pankanti
Pattern Recognition, 2004. ICPR 2004. Proceedings of the 17th International Conference on, pp. 103--106

Fingerprint quality assessment
Michael Yi-Sheng Yao, Sharath Pankanti, Norman Haas
Automatic Fingerprint Recognition Systems, pp. 55--66, Springer New York, 2004

A secure protocol for data hiding in compressed fingerprint images
N Ratha, M Figueroa-Villanueva, J Connell, R Bolle
Biometric Authentication, 205--216, Springer, 2004

Efficacy of joint person subset bootstrap estimation of confidence interval
Ruud M Bolle, Nalini K Ratha, Sharath Pankanti
Proc. of Workshop on Biometrics in conjunction with ICPR 2004 called Biometric Challenges arising from theory to practice, pp. 55

Dynamic behavior analysis in compressed fingerprint videos
C Dorai, NK Ratha, RM Bolle
IEEE Transactions on Circuits and Systems for Video Technology 14(1), 58--73, 2004

Iris individuality: A partial iris model
Ruud M Bolle, Sharath Pankanti, Jonathon H Connell, Nalini K Ratha
Pattern Recognition, 2004. ICPR 2004. Proceedings of the 17th International Conference on, pp. 927--930, IEEE

Error analysis of pattern recognition systems the subsets bootstrap
R M Bolle, N K Ratha, S Pankanti
Computer Vision and Image Understanding 93(1), 1--33, Elsevier, 2004

Guide to biometrics
Ruud Bolle
Springer-Verlag New York Incorporated, 2004

Automatic fingerprint recognition systems
N K Ratha, R Bolle
books.google.com, Springer Verlag, 2004


2003

Architecture for Synchronous Multiparty Authentication Using Biometrics
S J Noronha, C Dorai, N K Ratha, R M Bolle
Lecture notes in computer science, 609--616, Springer, 2003

A Comparative Performance Analysis of JPEG 2000 vs. WSQ for Fingerprint Image
M A Figueroa-Villanueva, N K Ratha, R M Bolle
Audio-and video-based biometric person authentication: 4th International Conference, AVBPA 2003, Guildford, UK, June 9-11, 2003: proceedings, pp. 385

Minutiae verification in fingerprint images using steerable wedge filters
Sharat Chikkerur, Sharath Pankanti, Nalini K Ratha, Ruud Bolle, Venu Govindaraju
Indian Conf, 2003

A comparative performance analysis of JPEG 2000 vs. WSQ for fingerprint image compression
M A Figueroa-Villanueva, N K Ratha, R M Bolle
Lecture Notes in Computer Science, 385--392, Springer, 2003

Biometrics break-ins and band-aids
N K Ratha, J H Connell, R M Bolle
Pattern Recognition Letters 24(13), 2105--2113, Elsevier, 2003

A JC-BioAPI compliant smart card with biometrics for secure access control
M. Osborne, N. Ratha
Audio-and Video-Based Biometric Person Authentication, pp. 1058-1058, Springer, 2003


2002

Structure in Errors: A Case Study in Fingerprint Verification
S Pankanti, NK Ratha, RM Bolle
Pattern Recognition, Proceedings. 16th International Conference on , IEEE, 2002

System and method for multi-party validation, authentication and/or authorization via biometrics
R M Bolle, C Dorai, S J Noronha, N K Ratha
US Patent App. 10/308,664, 2002 - Google Patents, Google Patents
US Patent App. 10/308,664

IBM research report: Biometrics 101
R Bolle, J Connell, S Pankanti, N Ratha, A Senior
IBM Research Division, 2002

Quantifying quality: A case study in fingerprints
M Yao, Sharath Pankanti, Norman Haas, Nalini Ratha, R Bolle
Proc, pp. 126--131, 2002

On the security of biometrics authentication
N Ratha RM Bolle
IBM Technical Resport, 2002

Pre-enhancing Non-uniformly Illuminated Fingerprint Images
N Haas, N K Ratha, R M Bolle
Retrieved April2, 2005, 2002

Enhancing Security and Privacy of Biometric-based Authentication Systems IBM Systems Journal
NK Ratha, JH Connell, R Bolle
Vol, Vol, 2002

Fingerprint image enhancement using weak models
J H Connell, N K Ratha, R M Bolle
Image Processing, pp. I--45, 2002

Biometric perils and patches
R M Bolle, J H Connell, N K Ratha
Pattern Recognition 35(12), 2727--2738, Elsevier, 2002

Structure in errors: a case study in fingerprint verification
Sharathchandra Pankanti, Nalini K. Ratha, Rudolf M Bolle
Pattern Recognition, 2002. Proceedings. 16th International Conference on, pp. 440--443

Fingerprint minutiae: a constructive definition
Ruud Bolle Andrew, Andrew W Senior, Nalini K Ratha, Sharath Pankanti
Workshop on biometrics, IEEE ECCV, pp. 58--66, Citeseer, 2002

Biometrics 101
Rudolf M Bolle, Jonathan Connell, Sharathchandra Pankanti, Nalini K Ratha, Andrew W Senior
Report RC22481, IBM Research, 545--546, 2002


2001

Enhancing security and privacy in biometrics-based authentication systems
N K Ratha, J H Connell, R M Bolle
IBM systems journal 40(3), 614--634, IBM, 2001

Confidence interval, measurement in performance analysis of biometrics systems using the bootstrap
RM Bolle, NK Ratha, S Pankanti
In Proc. Third IEEE Workshop on Empirical Evaluation Methods in Computer Vision, 2001


Secure fingerprint-based authentication for Lotus Notes{\textregistered}
N K Ratha, J H Connell, R M Bolle
Proceedings of the 2001 workshop on Multimedia and security: new challenges, pp. 48--51

Biometric technologies... emerging into the mainstream
R M Bolle, J Connell, A Hampapur, E Karnin, R Linsker, G N Ramaswamy, N K Ratha, A W Senior, J L Snowdon, T G Zimmerman
IBM Research Report, Citeseer, 2001

Tutorial on automated biometrics
N K Ratha, A Senior, R M Bolle
Proceedings of International Conference on Advances in Pattern Recognition, 2001

Automated biometrics
N K Ratha, A Senior, R M Bolle
International Conference on Advances in Pattern Recognition, Rio de Janeiro, Brazil, 2001

An analysis of minutiae matching strength
N Ratha, J Connell, R Bolle
Audio-and Video-Based Biometric Person Authentication, pp. 223--228, Springer, 2001

Enhancing security and privacy in biometrics-based authentication systems
N K R J H C R M Bolle, J Connell
IBM Systems Journal 40(3), 614--634, Citeseer, 2001


2000

1. H. Connell, RM Bolle," Secure Data Hiding in Wavelet Compressed Fingerprint Images
NK Ratha
Proc. ACM Multimedia, ppI27-130, 2000

Evaluating techniques for biometrics-based authentication systems (FPR)
RM Bille, S Pankanti, NK Ratha
Proceedings 15th IAPR Intl, pp. 831--837, IEEE, 2000

Hierarchical partitioned least squares filter-bank for fingerprint enhancement
Sugata Ghosal, Nalini K Ratha, Raghavendra Udupa, Sharath Pankanti
Pattern Recognition, 2000. Proceedings. 15th International Conference on, pp. 334--337

Learning partitioned least squares filters for fingerprint enhancement
S Ghosal, R Udupa, S Pankanti, NK Ratha
Applications of Computer Vision, 2000, Fifth IEEE Workshop on, pp. 2--7

Cancelable biometrics
N Ratha, J Connell, R Bolle
Proceedings 2000 Biometrics Consortium Workshop, pp. 13--14

Detecting dynamic behavior in compressed fingerprint videos: Distortion
C Dorai, N Ratha, R Bolle
IEEE COMPUTER SOCIETY CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, 2000

Evaluation techniques for biometrics-based authentication systems (FRR)
Ruud M Bolle, Sharath Pankanti, Nalini K Ratha
Pattern Recognition, 2000. Proceedings. 15th International Conference on, pp. 831--837

Secure data hiding in wavelet compressed fingerprint images
N K Ratha, J H Connell, R M Bolle
Proceedings of the 2000 ACM workshops on Multimedia, pp. 127--130

Robust fingerprint authentication using local structural similarity
N K Ratha, R M Bolle, V D Pandit, V Vaish
Fifth IEEE workshop on applications of computer vision, pp. 29--34, 2000


1999

Image mOSaiCing for identification in network society
NK RATHA, JH CONNELL, RM BOLLE
1999 - Kluwer, Kluwer

Smartcard based authentication
NK Ratha, R Bolle
KLUWER INTERNATIONAL SERIES IN ENGINEERING AND COMPUTER SCIENCE, 369--384, KLUWER ACADEMIC PUBLISHERS GROUP, 1999

Secure fingerprint based user authentication for lotus notes
N Ratha, J H Connell, R M Bolle
IBM Research Journal 17(04), 1--11, 1999

A biometrics-based secure authentication system
NK Ratha, JH Connell, RM Bolle
Proc, pp. 70--73, 1999

Minutia template exchange format
Ruud M Bolle, Nalini K Ratha, Andrew Senior, Sharath Pankanti
Proc. IEEE Workshop Automatic Identification Advanced Technologies, pp. 74--77, 1999

Evaluating authentication systems using bootstrap confidence intervals
Ruud M Bolle, Nalini K Ratha, Sharath Pankanti
Proc, pp. 9--13, 1999

Fingerprint image quality estimation
N K Ratha, R M Bolle
IBM Computer Science Research Report RC21622, 1999


1998

Image Mosiacing for Rolled Fingerprint Construction
N K Ratha, J H Connell, R M Bolle
International Conference on Pattern Recognition, pp. 1651--1653, 1998

Effect of controlled image acquisition on fingerprint matching
N K Ratha, R M Bolle
INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION, pp. 1659--1661, 1998


1997

Issues in large scale automatic biometric identification
B Germain, R Bolle, A Califano, S Colville, S Pankanti, N Ratha
IEEE Workshop on Automatic Identification Advanced Technologies, pp. 43--46, 1997

Object detection using Gabor filters
A K Jain, N K Ratha, S Lakshmanan
Pattern Recognition 30(2), 295--309, Elsevier, 1997


Research issues in biometrics
Ruud M Bolle, Nalini K Ratha, Sharath Pankanti
Computer Vision—ACCV'98, pp. 2--9, Springer Berlin Heidelberg, 1997


1996

FPGA-based high performance page layout segmentation
N K Ratha, A K Jain, D T Rover
Proceedings of the 1996 Great Lakes Symposium on VLSI, pp. 29--34


A real-time matching system for large fingerprint databases
NK Ratha, K Karu, S Chen, AK Jain
IEEE Transactions on Pattern Analysis and Machine Intelligence 18(8), 799--813, 1996


1995

Rover.“Convolution on Splash 2”
N K Ratha, A K Jain, T Diane
Proc, pp. 204--213, 1995

High performance custom computing for image segmentation
N K Ratha, A K Jain
High Performance Computing Conference, New Delhi, pp. 67--72, 1995

Fingerprint matching on Splash 2
N K Ratha, A K Jain, D T Rover
Splash 2: FPGAs in a Custom Computing Machine, To be published. IEEE Computer, 117--140, Citeseer, 1995

Clustering using a coarse-grained parallel genetic algorithm: a preliminary study
N K Ratha, A K Jain, M J Chung, V Cantoni, L Lombardi, M Mosconi, M Savini, A Setti
Proceedings of the Computer Architectures for Machine Perception, pp. 331, 1995

An FPGA-based point pattern matching processor with application to fingerprint matching
N K Ratha, A K Jain, D T Rover, V Cantoni, L Lombardi, M Mosconi, M Savini, A Setti
Proceedings of Computer Architectures for Machine Perception, pp. 394--401, 1995

Convolution on SPLASH 2
N K Ratha, A Jain, D Rover
Proceedings of IEEE Workshop on FPGAs for Custom Computing Machines, pp. 204--213, 1995

Adaptive flow orientation-based feature extraction in fingerprint images
N K Ratha, S Chen, A K Jain
Pattern Recognition 28(11), 1657--1672, Elsevier, 1995


1994

Signal processing applications using VHDL on Splash 2
S H Choi, N K Ratha, M J Chung, D T Rover
Proc, 1994

Parallel implementation of vision algorithms on workstation clusters
D Judd, N K Ratha, P K McKinley, J Weng, A K Jain
INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION, pp. 317--317, 1994


Year Unknown

Clustering using a coarse-grained parallel Genetic Algorithm
N Ratha, A Jain, M Chung
Proc, pp. 331--338, 0

A distributed edge detection and surface reconstruction algorithm
N K Ratha, T Acar, M Gokmen, A K Jain
Proc, pp. 149--154, 0


FPGA-based coprocessor for text string extraction
N K Ratha, A K Jain, D T Rover
image128, 128, 0