Compression and decompression method of image data

Details Compression and decompression method of image data Compression and decompression method of image data

2007-07-24

2007-07-24

Dang, Duy M. (Department: 2624)

Image analysis

Color image processing

Compression of color images

C382S232000, C382S240000

Reexamination Certificate

active

10638640

ABSTRACT:
A compressing method of image data is carried out by a first process of dividing the image data into a plurality of blocks, a second process of linearly scanning the image data within the block by a given scan method defining a pattern of linearly scanning the image data of the block so as to arrange the image data in series, and a third process of compressing the arranged image data so as to reduce an amount of the image data of the block. The second process and the third process are repeatedly applied to the same block with using different scan methods defining different patterns of linearly scanning the image data, then an optimum one of the different scan methods is selected, which succeeds in most reducing the amount of the image data, and the compressed image data arranged by the selected scan method is outputted together with indication of the selected scan method.

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Notice of Rejection from Japan Patent Office dated Apr. 12, 2005.

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