Color image data encoding apparatus having improved resolution/e

Details Color image data encoding apparatus having improved resolution/e Color image data encoding apparatus having improved resolution/e

1988-04-22

1990-11-27

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, 358 13, H04N 141, G03F 308

Patent

active

049740717

ABSTRACT:
An apparatus for encoding color image data containing luminance information and color information in the unit of each block of predetermined size, by detecting the edge of the color image data in the block based on the luminance information and forming a code of a fixed length in response to the edge detection. The luminance information and the color information are coded into codes of different lengths according to the presence of absence of an edge, and codes are formed from the code of fixed length and codes of different lengths.

REFERENCES:
patent: 4667250 (1987-05-01), Murai
patent: 4682215 (1987-07-01), Adachi
patent: 4887151 (1989-12-01), Wataya

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