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

页码：1353 / 1361

页数：9

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