Image analysis – Image compression or coding
Patent
1994-12-15
1998-05-19
Johns, Andrew
Image analysis
Image compression or coding
382246, 382248, 382251, 348405, 348417, 348422, 358427, 358432, G06K 936, G06K 946, H04N 712, H04N 141
Patent
active
057546967
ABSTRACT:
An image compression-coding device includes a level conversion circuit for adaptively reducing the amplitude of the quantification coefficient data based on statistical characteristics of the quantification coefficient data. The device further includes a selection circuit for selectively outputting either the quantification coefficient data after the level conversion or the quantification coefficient data before the level conversion, so that the image compression-coding device outputs a smaller amount of variable-length codes.
REFERENCES:
patent: 5021891 (1991-06-01), Lee
patent: 5036391 (1991-07-01), Auvray et al.
patent: 5067015 (1991-11-01), Combridge et al.
patent: 5107345 (1992-04-01), Lee
patent: 5184229 (1993-02-01), Saito et al.
patent: 5216503 (1993-06-01), Paik et al.
patent: 5227878 (1993-07-01), Puri et al.
patent: 5253078 (1993-10-01), Balkanski et al.
patent: 5274443 (1993-12-01), Dachiku et al.
patent: 5341318 (1994-08-01), Balkanski et al.
patent: 5452104 (1995-09-01), Lee
patent: 5479527 (1995-12-01), Chen
patent: 5588075 (1996-12-01), Chiba et al.
Search Report for European Appl. 94119818.6, mailed Feb. 6, 1996.
Bannai Tatsushi
Miyashita Mitsuhiro
Davis Monica S.
Johns Andrew
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Apparatus for compression-coding image data and method of the sa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for compression-coding image data and method of the sa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for compression-coding image data and method of the sa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1861764