| 广义高斯信源的自适应编码研究 |
| |
| 引用本文： | 赵安邦,王文生,崔慧娟,唐昆.广义高斯信源的自适应编码研究[J].电视技术,2006(7):7-10. |
| |
| 作者姓名： | 赵安邦 王文生 崔慧娟 唐昆 |
| |
| 作者单位： | 1. 清华大学,电子工程系,北京,100084;哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001
2. 清华大学,电子工程系,北京,100084 |
| |
| 摘 要： | 首先介绍了当前最新的几种视频编码标准并且进行了比较,熵编码是每一个视频编码标准必须认真研究的课题,为了减少由于失配所带来的效率损失,本文提出了一种自适应编码技术:自适应指数哥伦布码,并与自适应算术编码进行了比较.分析和仿真都表明即使信源特性在大范围内发生变化,自适应指数哥伦布码对于保持高的编码效率是足够稳健的(90%以上的情况),同时保持了指数哥伦布码和哥伦布-莱期码的简洁性.
|
| 关 键 词： | 指数哥伦布码 哥伦布-莱斯码 广义高斯信源 自适应编码 |
| 文章编号： | 1002-8692（2006）07-0007-04 |
| 收稿时间： | 2006-04-12 |
| 修稿时间： | 2006-04-12 |
Adaptive Coding for Generalized Gaussian Sources in Image Coding |
| |
| ZHAO An-bang,WANG Wen-sheng,CUI Hui-juan,TANG Kun.Adaptive Coding for Generalized Gaussian Sources in Image Coding[J].Tv Engineering,2006(7):7-10. |
| |
| Authors: | ZHAO An-bang WANG Wen-sheng CUI Hui-juan TANG Kun |
| |
| Affiliation: | 1, Department of Electronic Engineering, Tsinghua University, Bering 100084, China; 2, School of Underwater Acoustic Harbin Engineering University, Harbin 150001, China |
| |
| Abstract: | Several latest video coding standards are introduced and compared. Since entropy coding is one of the most important topics that need serious study in the fields of video coding standards, the main work of this paper focuses on adaptive entropy coding. In this paper, an adaptive coding technique is proposed, namely, adaptive Exp-Golomb codes (AEG), in order to mitigate the efficiency loss due to mismatch. Analysis and simulations show that the adaptive techniques are robust enough to keep high coding efficiency (constantly about 90%) even if the sources undergo big changes. |
| |
| Keywords: | Exp-Golomb (EG) codes Golomb-Rice (GR) codes Generalized Gaussian (GG) sources adaptive coding |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
