Apparatus for compressing and decompressing image data

Details Apparatus for compressing and decompressing image data Apparatus for compressing and decompressing image data

1993-11-17

1995-10-03

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

358429, 358433, H04N 141, H04N 1415

Patent

active

054556805

ABSTRACT:
The present invention relates to an apparatus for compressing and decompressing the digital image data designed for minimizing degradation of the image quality and for improving the compression efficiency. Discriminative over the conventional package quantization method based on the statistical characteristics of an image, the invention is configured such that the image is firstly segmented into predetermined number of sub-blocks by the block segmentator, and each divided blocks are adopted by the different compression technique in accordance with the shape or complicity of the image.

REFERENCES:
patent: 4937681 (1990-06-01), Fujinawa et al.

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