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Title: WO9409446A1: BIOMETRIC PERSONAL IDENTIFICATION SYSTEM BASED ON IRIS ANALYSIS[French]
[ Derwent Title ]


Country:
Kind:
WO World Intellectual Property Organization (WIPO)
A1 INTERNATIONAL APPLICATION PUBLISHED WITH INTERNATIONAL SEARCH REPORT i

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69 pages

 
Inventor: DAUGMAN, John, G.;

Assignee: DAUGMAN, John, G.
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Published / Filed: 1994-04-28 / 1992-10-10

Application Number: WO1992US0008673

IPC Code: Advanced: A61B 3/12; A61B 5/117; G06F 21/00; G06K 9/00; G06K 9/46; G06K 9/52; G06T 7/00; G07C 9/00;
Subclass: G06K;
IPC-7:
G06K 9/00
;

ECLA Code: G06F21/32; A61B3/12F; G06K9/00S; G06K9/46A1; G06K9/52; G07C9/00C2D; K61B5/117;

Priority Number:
1992-10-10  WO1992US0008673
1992-10-10  CA1992002145659
1991-07-15  US1991000729638

Abstract:     Image analysis algorithms find the iris in a live video image (10) of a person's face, and encode its texture into an "iris code" (24). Iris texture is extracted from the image at multiple scales of analysis by a self-similar set of quadrature bandpass filters defined in a dimensionless polar coordinate system. The sign of the projection of many different parts of the iris onto these filters determines each bit in an iris code. Comparisons between codes are readily implemented by the Exclusive-OR (XOR) logical operation. Pattern recognition is achieved by combining signal processing methods with statistical decision theory, leading to a statistical test of independence based on a similarity metric (Hamming distance) (26) that is computed from the XOR of any two iris codes. This measure positively establishes, confirms, or disconfirms, the identity of any individual (28). It also generates an objective confidence level (30) associated with the identification decision. [French]

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Designated Country: AT AU BB BE BF BG BJ BR CA CF CG CH CI CM CS DE DK ES FI FR GA GB GN GR HU IE IT JP KP KR LK LU MC MG ML MN MR MW NL NO PL RO RU SD SE SN TD TG UA

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First Claim:
Show all claims
    I claim: 1. A method for uniquely identifying a particular human being by biometric analysis of the iris of the eye, comprising the following steps: acquiring an image of an eye of the human to be identified; isolating and defining the iris of the eye within the image; analyzing the iris to generate a presenting iris code; comparing said presenting code with a previously generated reference iris code to generate a measure of similarity between said presenting iris code and said reference code; and converting said similarity measure into a decision that said iris codes either do or do not arise from the same iris.

Description
Expand description
+ Biometric Personal Identification System Based On Iris Analysis
+ BACKGROUND OF THE INVENTION
    This invention is related to the field of personal identification, and more specifically to the field of automated identification of humans by biometric indicia.
+ SUMMARY OF THE INVENTION
    The broad object of the present invention is to provide a system for identifying persons based on the iris of either eye.
+ Brief Description of the Drawings
    Fig. 1 is a block diagram depicting the principal steps of the process of the present invention; Fig. 2 is a photograph of a human eye, overlaid to demonstrate the process of the present invention; Fig. 3 illustrates the quadrature bandpass filters employed by the present invention as image convolution kernels to extract iris structure at many scales of analysis.
+ DETAILED DESCRIPTION OF THE INVENTION
    An embodiment of the present invention is shown in schematic form in Figure 1 and comprises a block diagram depicting the principal steps in developing an iris identification code for a person, and then using that code to make an identification. The process will be discussed in overall terms, followed by a detailed analysis.

       
Forward References: Go to Result Set: Forward references (21)
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PDF
Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 28pp US8315440  2012-11-20 Cambier; James L.  Iristrac, LLC System and method for animal identification using iris images
Buy PDF- 28pp US8189879  2012-05-29 Cambier; James L.  Iristrac, LLC System and method for animal identification using IRIS images
Buy PDF- 19pp US7664295  2010-02-16 Kondo; Kenji  Panasonic Corporation Image processing method, image processor, photographic apparatus, image output unit and iris verify unit
Buy PDF- 25pp US7616785  2009-11-10 Kondo; Kenji  Panasonic Corporation Living eye judging method and living eye judging device
Buy PDF- 30pp US7564993  2009-07-21 Kondo; Kenji  Panasonic Corporation Personal authentication method and device
Buy PDF- 19pp US7519199  2009-04-14 Kondo; Kenji  Panasonic Corporation Image processing method, image processor, photographic apparatus, image output unit and iris verify unit
Buy PDF- 30pp US7486806  2009-02-03 Azuma; Takeo  Panasonic Corporation Iris encoding method, individual authentication method, iris code registration device, iris authentication device, and iris authentication program
Buy PDF- 18pp US7466348  2008-12-16 Morikawa; Goichi  Canon Kabushiki Kaisha Imaging apparatus and control method utilizing biometric information
Buy PDF- 29pp US7379567  2008-05-27 Azuma; Takeo  Matsushita Electric Industrial Co., Ltd. Iris code generation method, individual authentication method, iris code entry device, individual authentication device, and individual certification program
Buy PDF- 14pp US7347547  2008-03-25 Sugita; Morio  Matsushita Electric Industrial Co., Ltd. Pupil detection device and iris authentication apparatus
Buy PDF- 22pp US7305089  2007-12-04 Morikawa; Goichi  Canon Kabushiki Kaisha Picture taking apparatus and method of controlling same
Buy PDF- 15pp US7298874  2007-11-20 Cho; Seong-Won  Senga Advisors, LLC Iris image data processing for use with iris recognition system
Buy PDF- 20pp US7277561  2007-10-02 Shin; Sung Bok  Qritek Co., Ltd. Iris identification
Buy PDF- 35pp US7155035  2006-12-26 Kondo; Kenji  Matsushita Electric Industrial Co., Ltd. Personal authentication method, personal authentication apparatus and image capturing device
Get PDF - 27pp DE10194154B4  2005-12-22 Shin, Sung Bok, Yongin, Kyonggi, KR  Qritek Co., Ltd. Iris-Identifikationssystem und Verfahren und computerlesbares Speichermedium mit darin gespeicherten, vom Computer ausführbaren Instruktionen, um das Iris-Identifikationsverfahren zu implementieren
Buy PDF- 9pp US6944318  2005-09-13 Takata; Melvin M.  Citicorp Development Center, Inc. Fast matching systems and methods for personal identification
Buy PDF- 13pp US6687389  2004-02-03 McCartney; David John  British Telecommunications Public Limited Company Imaging apparatus
Buy PDF- 27pp US6614919  2003-09-02 Suzaki; Masahiko  Oki Electric Industry Co., Ltd. Method of extracting iris region and individual identification device
Buy PDF- 13pp US6333988  2001-12-25 Seal; Christopher Henry  British Telecommunications PLC Personal identification
Buy PDF- 12pp US6309069  2001-10-30 Seal; Christopher H  British Telecommunications public limited company Personal identification
Get PDF - 2pp DE19632299A1  1998-02-26 Baltus, Rene  Baltus, Rene, 53125 Bonn, DE Verfahren zur Erfassung, Registrierung, Zuordnung und Nutzung von biometrischen Daten, die z. B. der Personenidentifikation dienen
       
Other Abstract Info: DERABS G1994-074707

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