JBIG coding and decoding system

Details JBIG coding and decoding system JBIG coding and decoding system

2011-07-05

2011-07-05

Alavi, Amir (Department: 2624)

Image analysis

Image compression or coding

Lossless compression

Reexamination Certificate

active

07974484

ABSTRACT:
A Joint Bi-level Image Group (JBIG) coding and decoding system, which provides a series of fully serial and parallel computational combinations in arithmetic coding and decoding to thereby reduce the complexity of JBIG arithmetic encoder and decoder and increase the processing speed. The JBIG coding system receives pixels and contexts of an image datastream and performs an adaptive arithmetic coding on the pixels in accordance with a pre-stored table and a probability prediction table for further performing a non-distortion compression on the image datastream. The JBIG decoding system receives data and contexts of a compressed datastream and performs an adaptive arithmetic decoding on the data of the compressed datastream in accordance with the pre-stored table and the probability prediction table to thereby obtain an image datastream.

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