Grayscale and binary image data compression

Details Grayscale and binary image data compression Grayscale and binary image data compression

2008-05-13

2008-05-13

Chen, Wenpeng (Department: 2624)

Image analysis

Image compression or coding

Lossless compression

C382S233000

Reexamination Certificate

active

07373008

ABSTRACT:
Arrangements and procedures for compressing grayscale, binary and bi-level image data are disclosed. With respect to compressing binary and bi-level image data, individual byte image data values are retained that are different from a same row byte that is n-bytes back. For each retained byte image data value, individual byte image data values are encoded for bytes in a current byte row with replacement data strings. The replacement data strings include a replacement positioning code and a replacement count code for replicating retained byte image data values for subsequent data decompression as a group of substantially identical byte values.

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