Novel precompression rate-distortion optimization algorithm for JPEG 2000

Yu-Wei Chang; Hung-Chi Fang; Chung-Jr Lian; Liang-Gee Chen

doi:10.1117/12.527682

18 January 2004 Novel precompression rate-distortion optimization algorithm for JPEG 2000

Yu-Wei Chang, Hung-Chi Fang, Chung-Jr Lian, Liang-Gee Chen

Proceedings Volume 5308, Visual Communications and Image Processing 2004; (2004) https://doi.org/10.1117/12.527682
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

In this paper, a novel pre-compression rate-distortion optimization algorithm is proposed, which can reduce computation power and memory requirement of JPEG 2000 encoder. It can reduce the wasted computational power of the entropy coder (EBCOT Tier-1) and unnecessary memory requirement for the code-stream. Distortion and rate of coding passes are calculated and estimated before coding, and therefore truncation point is selected before coding. Experimental results show that the computation time of EBCOT Tier-1 and memory requirement for the code-stream can be greatly reduced,especially at high compression ratio. The quality of the proposed algorithm is slightly lower than that of post-compression rate-distortion optimization algorithm.

Citation Download Citation

Yu-Wei Chang, Hung-Chi Fang, Chung-Jr Lian, and Liang-Gee Chen "Novel precompression rate-distortion optimization algorithm for JPEG 2000", Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); https://doi.org/10.1117/12.527682

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