Image compression apparatus, image depression apparatus and...

Details Image compression apparatus, image depression apparatus and... Image compression apparatus, image depression apparatus and...

2006-12-12

2006-12-12

Sherali, Ishrat (Department: 2624)

Image analysis

Color image processing

Compression of color images

Reexamination Certificate

active

07149350

ABSTRACT:
An image compression apparatus includes a color region judging section which judges a color region of a color image signal and outputs the judgment information as the judgment result, a switch which chooses one compression parameter from a plurality of compression parameters corresponding to the judgment information supplied from the color region judging section, and a compressing section which compresses color image signals corresponding to the compression parameter chosen by the switch, wherein image compression and decompression with general color balance satisfactorily adjusted by appropriately setting the compression ratio that varies in accordance with color regions as required.

REFERENCES:
patent: 5710826 (1998-01-01), Osawa et al.
patent: 5844699 (1998-12-01), Usami et al.
patent: 6342950 (2002-01-01), Tabata et al.
patent: 07-203211 (1993-12-01), None
patent: 7-203211 (1995-08-01), None
U.S. Appl. No. 09/138,284, filed Aug. 21, 1998, Tabata et al.

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