Image analysis – Applications – Target tracking or detecting
Patent
1997-10-28
2000-05-23
Au, Amelia
Image analysis
Applications
Target tracking or detecting
382107, 382236, 382278, 382280, 348155, 348352, 348699, G06K 900, G06K 936, H04N 718, H04N 1300
Patent
active
060673672
ABSTRACT:
A moving direction measuring device includes a collation Fourier pattern data generating section, a registration Fourier pattern data generating section, a pattern processing section, and a moving direction measuring section. The collation Fourier pattern data generating section generates collation Fourier two-dimensional pattern data by performing two-dimensional discrete Fourier transform for two-dimensional pattern data input at time T.sub.n. The registration Fourier pattern data generating section generates registration Fourier two-dimensional pattern data by performing two-dimensional discrete Fourier transform for two-dimensional pattern data input at time T.sub.n+1. The pattern processing section synthesizes these Fourier two-dimensional pattern data, and performs either two-dimensional discrete Fourier transform or two-dimensional discrete inverse Fourier transform for the resultant data. The moving direction measuring section obtains a correlation peak in a correlation component area appearing in the synthesized Fourier two-dimensional pattern data having undergone Fourier transform performed by the pattern processing section, and obtains a direction from a reference position in the correlation component area to a position of the correlation peak as a moving direction of the device.
REFERENCES:
patent: 4890160 (1989-12-01), Thomas
patent: 5329368 (1994-07-01), Plotke
patent: 5408269 (1995-04-01), Tsukagoshi
patent: 5588067 (1996-12-01), Peterson et al.
patent: 5612744 (1997-03-01), Lee et al.
patent: 5731849 (1998-03-01), Kondo et al.
patent: 5844630 (1998-12-01), Yamauchi
patent: 5886744 (1999-03-01), Hannah
Electronic Engineers' Handbook, Fink et al; pp. 2-7, 1989.
"Introduction to Computer Image Processing", Japan Industrial Technology center pp. 44-45, Jun. 1990.
"Fingerprint Indentification Algorithm Using 2-D DFT", Savemation Review pp. 2-7, Feb., 1995.
"Fingerprint Identification System Using Liquid Crystal Spatial Light Modulators for Phase Modulation", The Instisute of Electronics Conference D-287, Sep., 1993.
Kobayashi Koji
Nakajima Hiroshi
Au Amelia
Dastouri Mehrdad
Yamatake-Honeywell Co. Ltd.
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