Novel pre-compression rate-distortion optimization algorithm for JPEG 2000

被引：8
|
作者：
Chang, YW [1 ]
Fang, HC [1 ]
Lian, CJ [1 ]
Chen, LG [1 ]
机构：
[1] Natl Taiwan Univ, Grad Inst Elect Inst, DSP IC Design Lab, Taipei 106, Taiwan
来源：
VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2004, PTS 1 AND 2 | 2004年 / 5308卷
关键词：
JPEG; 2000; rate control; EBCOT; low power; rate distortion optimizatoin;
D O I：
10.1117/12.527682
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
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.
引用
收藏
页码：1353 / 1361
页数：9
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