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Proceedings Paper

Novel precompression rate-distortion optimization algorithm for JPEG 2000
Author(s): Yu-Wei Chang; Hung-Chi Fang; Chung-Jr Lian; Liang-Gee Chen
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Paper 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.

Paper Details

Date Published: 18 January 2004
PDF: 9 pages
Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); doi: 10.1117/12.527682
Show Author Affiliations
Yu-Wei Chang, National Taiwan Univ. (Taiwan)
Hung-Chi Fang, National Taiwan Univ. (Taiwan)
Chung-Jr Lian, National Taiwan Univ. (Taiwan)
Liang-Gee Chen, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5308:
Visual Communications and Image Processing 2004
Sethuraman Panchanathan; Bhaskaran Vasudev, Editor(s)

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