Digitization of a papillary structure

Details Digitization of a papillary structure Digitization of a papillary structure

2011-08-30

2011-08-30

Lu, Tom Y (Department: 2624)

Image analysis

Applications

Personnel identification

C382S115000, C382S125000, C382S128000, C382S170000, C382S171000, C902S003000, C341S126000, C340S005810, C340S005820, C340S005830

Reexamination Certificate

active

08009881

ABSTRACT:
A method and apparatus is described for recording and digitizing intensity profiles (IP) of the papillary structure of the skin with high intensity resolution using sensors S with low intensity resolution. For this purpose, a plurality of digital image signals (DS, DS1, DS2) of an identical subarea e.g. of a fingerprint are recorded, whereby the continuous intensity domain (KI) of the fingerprint is scanned in different intensity resolutions, and/or different portions (A1, A2) of said continuous intensity domain (KI) are mapped to discrete intensity domains of the single digital image signals (DS, D1, DS2). By the pixelwise combination of all digital image signals (DS, DS1, DS2), a digital fingerprint image signal (PS) is finally produced whose discrete intensity domain (DI) represents a larger portion of the continuous intensity domain (KI) of the fingerprint and/or has a higher resolution intensity than each single one of the digital image signals (DS, DS1, DS2).

REFERENCES:
patent: 4393372 (1983-07-01), Hoehn
patent: 6028543 (2000-02-01), Gedcke et al.
patent: 6259804 (2001-07-01), Setlak et al.
patent: 2002/0057845 (2002-05-01), Fossum et al.
patent: 1 215 620 (2002-06-01), None
patent: 98/50879 (1998-11-01), None
patent: 03/096263 (2003-11-01), None
Morimura H. et al., “A Pixel-Level Automatic Calibration Circuit Scheme for Sensing Initialization of a Capacitive Fingerprint Sensor LSI”, 2001 Symposium on VLSI Circuits Digest of Technical Papers, Kyoto, Japan, Jun. 14-16, 2001, Tokyo: JSAP, Japan, Jun. 14, 2001 pp. 171-174, XPO10551530, ISBN: 4-89114-014-3, the whole document.
Khalid Sayood, “Introduction to Data Compression”, 2000, Morgan }Kaufmann, San Francisco 226380, XP002324270, ISBN: 1-55860-558-4, Chapter 8: Scalar Quantization.
“Lexikon, Fachgebietsabonnement Physik and Technik” ‘Online’, Apr. 12, 2005 , Elsevier/Spektrum Akademischer Verlas, Heidelb Erg, XP002324271, Retrieved from the Internet: URL:http://www.wissenschaft-online.de/abo/lexikon/physik/492} 'retrieved on Apr. 12, 2005, the whole document (with clear copy of text downloaded Dec. 17, 2007).

Affiliated with

Also associated with

Rating

Digitization of a papillary structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digitization of a papillary structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digitization of a papillary structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2659063