Image analysis – Applications – Personnel identification
Reexamination Certificate
2011-06-28
2011-06-28
Chawan, Sheela C (Department: 2624)
Image analysis
Applications
Personnel identification
C382S115000, C382S199000, C351S206000
Reexamination Certificate
active
07970179
ABSTRACT:
A process for extracting iris data for biometric identification includes a thresholding method where the thresholds are selected according to a nonparametric approach that considers the grey scale and does not require classifying pixels as edge or non-edge pixels. An eye image is first acquired, where the eye image has component images including an iris image with an inner boundary and an outer boundary. The eye image has a distribution of grey levels. Component images, such as an iris image or a pupil image, from the eye image are segmented according to the distribution of grey levels. The inner boundary and outer boundary of the iris image are determined from the component images. The iris image within the inner boundary and outer boundary is processed for biometric identification. The component images may be segmented by creating an eye histogram of pixel intensities from the distribution of grey levels.
REFERENCES:
patent: 3069654 (1962-12-01), Hough
patent: 4641349 (1987-02-01), Flom et al.
patent: 5291560 (1994-03-01), Daugman
patent: 5572596 (1996-11-01), Wildes et al.
patent: 5751836 (1998-05-01), Wildes et al.
patent: 5859686 (1999-01-01), Aboutalib et al.
patent: 5953440 (1999-09-01), Zhang et al.
patent: 6144754 (2000-11-01), Okano et al.
patent: 6152563 (2000-11-01), Hutchinson et al.
patent: 6215891 (2001-04-01), Suzaki et al.
patent: 6229907 (2001-05-01), Okano et al.
patent: 6247813 (2001-06-01), Kim et al.
patent: 6285780 (2001-09-01), Yamakita et al.
patent: 6373968 (2002-04-01), Okano et al.
patent: 6419638 (2002-07-01), Hay et al.
patent: 6526160 (2003-02-01), Ito
patent: 6532298 (2003-03-01), Cambier et al.
patent: 6542624 (2003-04-01), Oda
patent: 6546121 (2003-04-01), Oda
patent: 6571002 (2003-05-01), Ogawa
patent: 6591064 (2003-07-01), Higashiyama et al.
patent: 6597377 (2003-07-01), MacPhail
patent: 6614919 (2003-09-01), Suzaki et al.
patent: 6700998 (2004-03-01), Murata
patent: 6714665 (2004-03-01), Hanna et al.
patent: 6753919 (2004-06-01), Daugman
patent: 6760467 (2004-07-01), Min et al.
patent: 6785406 (2004-08-01), Kamada
patent: 6850631 (2005-02-01), Oda et al.
patent: 6944318 (2005-09-01), Takata et al.
patent: 6992717 (2006-01-01), Hatano
patent: 7099495 (2006-08-01), Kodno et al.
patent: 7155035 (2006-12-01), Kondo et al.
patent: 7197166 (2007-03-01), Jeng
patent: 7277561 (2007-10-01), Shin
patent: 2001/0017935 (2001-08-01), Suzaki et al.
patent: 2003/0012413 (2003-01-01), Kusakari et al.
patent: 2003/0058405 (2003-03-01), Cornsweet et al.
patent: 2004/0197011 (2004-10-01), Camus et al.
patent: 2006/0008124 (2006-01-01), Ewe et al.
patent: 2006/0147094 (2006-07-01), Yoo
patent: 2006/0165266 (2006-07-01), Hamza
patent: 2007/0036397 (2007-02-01), Hamza
patent: 2007/0047772 (2007-03-01), Matey et al.
patent: 2007/0047773 (2007-03-01), Martin et al.
patent: 2007/0110284 (2007-05-01), Rieul et al.
patent: 2007/0160266 (2007-07-01), Jones et al.
patent: 2007/0160267 (2007-07-01), Jones et al.
Y. Park, et al.; “A Fast Circular Edge Detector for the Iris Region Segmentation”; S.-W. Lee, H.H. Buelthoff, T. Poggio (Eds.) BMCV 2000, LNCS 1811, pp. 417-423, 2000.
Christel-Loïc Tisse, et al. “Person identification technique using human iris recognition”; Advanced System Technology; Université de Montpellier.
Libor Masek; “Recognition of Human Iris Patterns for Biometric Identification”; School of Computer Science and Software Engineering, The University of Western Australia, 2003. pp. 1-56.
Xiaomei Liu, et al.; “Experiments with an Improved Iris Segmentation Algorithm”; Department of Computer Science and Engineering University of Notre Dame; Fourth IEEE Workshop on Automatic Identification Advanced Technologies (AutoID), Oct. 2005, New York; 6 pages.
Ping-Sung Liao, et al.; “A Fast Algorithm for Multilevel Thresholding”; Journal of Information Science and Engineering 17, 713-727 (2001).
Nobuyuki Otsu “A Threshold Selection Method from Gray-Level Histograms”; IEEE Transactions on Systems Man and Cybernetics, vol. SMC-9, No. I, Jan. 1979.
Int'l Search Report for PCT/US07/14867 which claims priority to U.S. Appl. No. 11/526,096 (Jul. 17, 2008).
Written Opinion for PCT/US07/14867 which claims priority to U.S. Appl. No. 11/526,096 (Jul. 17, 2008).
Chawan Sheela C
Identix Incorporated
Nixon & Peabody LLP
LandOfFree
Iris data extraction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Iris data extraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Iris data extraction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2620330