Image analysis – Image compression or coding – Adaptive coding
Patent
1995-04-19
1997-11-25
Johns, Andrew
Image analysis
Image compression or coding
Adaptive coding
358430, G06K 936
Patent
active
056920741
ABSTRACT:
Input image information is divided into blocks each consisting of N.times.N pixels (N: positive integer) by a blocking section to obtain blocked image information. The blocked image information is coded by a coding section. At this time, a coding parameter used in the coding section is estimated by a code amount control section, and the coding section repeats coding plural times until the amount of coded information reaches a target code amount. Then, the coding parameter attaining the target code amount is set into the coding section to perform final coding and output final coded information. In the coding process, a block average as the average of the blocked image information in each block is calculated in any cycle of repetition of coding other than the final cycle. By the use of this block average, an image showing the approximation of the image information can be generated. Accordingly, the approximation of the image information can be output at high speeds, and the generation of the image showing the approximation of the image information can be efficiently performed.
REFERENCES:
patent: 4920426 (1990-04-01), Hatori et al.
patent: 5027214 (1991-06-01), Eujimori
patent: 5249053 (1993-09-01), Jain
patent: 5321522 (1994-06-01), Eschbach
patent: 5339368 (1994-08-01), Higgins-Luthman et al.
patent: 5412484 (1995-05-01), Yoshikawa
patent: 5432870 (1995-07-01), Schwartz
patent: 5543844 (1996-08-01), Mita et al.
Application/Computer: Video Compression Makes Big Gains, Oct. 1991, vol. 28, Issue 10 Rengh Ang, Peter A. Ruetz, David Auld.
English Translation of Japanese Kokai No. 5-268480 to Honda et al., Oct. 1993.
"International Standard for Multimedia Coding", Yasuda, pp. 14-47, (1991).
"Bit Rate Control Method for DCT Image Coding", K. Nemoto et al., Proceedings of the IEICE Fall Conference, D-45, 1989.
Fuji 'Xerox Co., Ltd.
Johns Andrew
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