Block entropy coding in embedded block coding with optimized...

Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure

Reexamination Certificate

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C382S239000, C382S247000, C375S240190

Reexamination Certificate

active

07421137

ABSTRACT:
Embedded block entropy coding with optimized truncation is useful for image compression schemes in conjunction, for example, with a Wavelet transform, so as to form a bit-stream which can be stored or transmitted with increased efficiency. In the arithmetic coding phase, several opportunities exist for minimizing complexity and improving compression and computational performance as compared to existing systems. One method involves bypassing the arithmetic coding procedure for certain lower significance bit-planes of each code-block. Then, the raw binary digits from these bit-planes can be interleaved into the arithmetically coded bit-stream. As a result, both the average number of arithmetically coded symbols and the maximum number of coding passes per code-block can be significantly reduced.

REFERENCES:
patent: 5815097 (1998-09-01), Schwartz et al.
patent: 6658159 (2003-12-01), Taubman
patent: 2002/0080408 (2002-06-01), Budge et al.
patent: 62094077 (1987-04-01), None
patent: WO 9916250 (1999-04-01), None
“JPEG 2000 Image Coding System,” JPEG 2000 Final committee draft version 1.0, Mar. 16, 2000, pp. i-x, 1-12, 53-72, 93-104, 109-128.
ISO/IEC JTC 1/SC 29/WG1 N1020R, “Coding of Still Pictures,” (Oct. 21, 1998).
ISO/IEC JTC 1/SC 29/WG1 N1201, “Coding of Still Pictures,” (Mar. 10, 1999).

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