CODING PROCESSING METHOD OF COLOR IMAGE INFORMATION, DECODING PROCESSING METHOD AND PRINTER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a much more highly efficient coding processing method for a color image where the correlation of adjacent pixel blocks is large.

SOLUTION: This coding method for expressing a color image by using color information and color selection information for each block is provided to operate the coding processing of a difference value between the color information and the color selection information and the corresponding information of adjacent blocks. Alternately, a difference flag showing whether or not the information is identical to the corresponding information of the adjacent blocks is generated, and when they are identical, the coding processing of the color information or the color selection information is omitted.

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