Image analysis – Image segmentation
Patent
1995-06-01
1997-03-18
Boudreau, Leo
Image analysis
Image segmentation
382171, 382176, 382248, 382251, 382239, G06K 934
Patent
active
056130155
ABSTRACT:
An image signal analyzing system for analyzing a pattern of an image on the basis of the waveforms of the image signals. The system includes a block extracting section for sampling an image signal and dividing the sampled image signal into input pixel blocks each consisting of m.times.n pixels (m and n are positive integers), a mean value separating section for subtracting a mean value from each pixel in the pixel block, a first analyzing section for analyzing a feature quantity of the direction of the tone variation of a mean-value separated block obtained from the mean value separating section, a second analyzing section for analyzing a feature quantity of the direction of amplitude of the mean-value separated block, and a judging section for judging a feature of waveform of the input pixel block on the basis of the analysis results of the first analyzing section and the second analyzing section.
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patent: 5337087 (1994-08-01), Mishima
"Digital Compression and Coding of Continuous Tone Still Images, Part 1: Requirements and Guidelines", ISD 10918-1, CCITT Recomm. T.81., pp. 1-29 (Oct. 1991).
"Image Processing Handbook (9.3 Coding of Monochromatic Still Picture)" Morio Ogami, Shokodo Inc., pp. 220-221, 1987.
Gregory K. Wallace, "The JPEG Still Picture Compression Standard", IEEE Transactions on Consumer Electronics, vol. 38, No. 1, Feb. 1992, pp. xviii-xxxiv.
Kamizawa Koh
Kimura Shun-ichi
Koshi Yutaka
Kunitake Setsu
Suzuki Kazuhiro
Boudreau Leo
Fuji 'Xerox Co., Ltd.
Tran Phuoc
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