Title:
APPARATUS AND METHOD FOR RADIAL AND ANGULAR OR ROTATIONAL ANALYSIS OF IMAGES FOR CHARACTERISING ANDFOR MATCHING SHAPE CONTENT
Document Type and Number:
WIPO Patent Application WO2003062907
Kind Code:
A3
Abstract:
A segmented radial spatial light modulator (50) has an active optic area (54) comprising a plurality of radially extending active optic modulator sectors (500, 510, 520, 530, 540, 550, 560, 580, 600, 610, 620, 630, 640, 650) disposed at various angular orientations with respect to a central axis (40). The segmented radial spatial light modulator (50) is used in separating and isolating portions of Fourier transform optic patterns (32) from images for characterization of images by shape for recording, storing, retrieving, searching, and comparison to other images for matches and near matches. The images can be ghosted to increase optical power in the Fourier transform optic pattern (32) without adding new shape content and for grading comparisons to other image shape characteristics for identifying near matches in addition to matches.
Inventors:
CRILL RIKK
Application Number:
PCT/US2003/001281
Publication Date:
February 19, 2004
Filing Date:
January 16, 2003
Export Citation:
Assignee:
LOOK DYNAMICS INC (US)
International Classes:
G06F17/30; G06T7/00; G06V10/88; H04N5/76; H04N5/92; (IPC1-7): G06K9/58
Domestic Patent References:
| WO2001073681A1 | 2001-10-04 | |||
| WO2000075867A1 | 2000-12-14 |
Other References:
ANONYMOUS: "Holographic Image Converter for Optical Information Processing", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 27, no. 7A, 1 December 1984 (1984-12-01), New York, US, pages 3745 - 3746, XP002246706
CASASENT D ET AL: "Diffraction pattern sampling using a computer-generated hologram", APPLIED OPTICS, 15 MARCH 1986, USA, vol. 25, no. 6, pages 983 - 989, XP002246707, ISSN: 0003-6935
ZIKUAN CHEN ET AL: "HYBRID OPTICAL/DIGITAL ACCESS CONTROL USING FINGERPRINT IDENTIFICATION", OPTICAL ENGINEERING, SOC. OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS. BELLINGHAM, US, vol. 34, no. 3, 1 March 1995 (1995-03-01), pages 834 - 838, XP000495227, ISSN: 0091-3286
CASASENT D ET AL: "Diffraction pattern sampling using a computer-generated hologram", APPLIED OPTICS, 15 MARCH 1986, USA, vol. 25, no. 6, pages 983 - 989, XP002246707, ISSN: 0003-6935
ZIKUAN CHEN ET AL: "HYBRID OPTICAL/DIGITAL ACCESS CONTROL USING FINGERPRINT IDENTIFICATION", OPTICAL ENGINEERING, SOC. OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS. BELLINGHAM, US, vol. 34, no. 3, 1 March 1995 (1995-03-01), pages 834 - 838, XP000495227, ISSN: 0091-3286
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