Image analysis – Applications – Personnel identification
Reexamination Certificate
2006-08-10
2010-12-21
Yuan, Kathleen S (Department: 2624)
Image analysis
Applications
Personnel identification
C382S173000, C382S202000, C356S071000
Reexamination Certificate
active
07856127
ABSTRACT:
A ridge direction extraction device capable of extracting ridge directions accurately even in direction unstable areas is provided. In the ridge direction extraction device, a zone direction extractor calculates ridge directions and direction confidence of each zone, and a high confidence zone area determiner determines a high confidence zone area. A direction expectation calculator selects a propagation candidate zone and a reference zone, and calculates direction expectation of the ridge direction of the propagation candidate zone based on the ridge direction and distance of the reference zone. A propagation zone direction extractor recalculates the direction confidence calculated by the zone direction extractor based on the direction expectation of each propagation candidate zone, and extracts the ridge direction of a propagation candidate zone based on the direction confidence recalculated.
REFERENCES:
patent: 4811414 (1989-03-01), Fishbine et al.
patent: 5337369 (1994-08-01), Shibuya
patent: 5608811 (1997-03-01), Kamei
patent: 5717786 (1998-02-01), Kamei
patent: 5937082 (1999-08-01), Funada
patent: 5963656 (1999-10-01), Bolle et al.
patent: 5974163 (1999-10-01), Kamei
patent: 6243492 (2001-06-01), Kamei
patent: 7027626 (2006-04-01), Funada
patent: 2002/0164056 (2002-11-01), Funada
patent: 2003/0076986 (2003-04-01), Yoon et al.
patent: 2004/0125993 (2004-07-01), Zhao et al.
patent: 0 855 667 (1998-07-01), None
patent: 2 281 799 (1995-03-01), None
patent: 52-097298 (1977-08-01), None
patent: 62-272378 (1987-11-01), None
patent: 05-181956 (1993-07-01), None
patent: 06-139338 (1994-05-01), None
patent: 08-007097 (1996-01-01), None
patent: 2002-288641 (2002-10-01), None
patent: 2004-153668 (2004-05-01), None
NEC Corporation
Sughrue & Mion, PLLC
Yuan Kathleen S
LandOfFree
Ridge direction extraction device, ridge direction... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ridge direction extraction device, ridge direction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ridge direction extraction device, ridge direction... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4169997