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

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