| 渐进图像传输中基于失真的码率分配 |
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| 引用本文： | 王红星, 张勇. 渐进图像传输中基于失真的码率分配[J]. 电子与信息学报, 2005, 27(12): 1969-1972. |
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| 作者姓名： | 王红星 张勇 |
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| 作者单位： | 1. 北京航空航天大学,北京,100083
2. 海军航空工程学院电子工程系,烟台,264001 |
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| 摘 要： | 该文根据信源编码压缩比、信道码率及信道特征对渐进图像传输失真的影响，提出一种基于最小图像失真的动态码率分配策略。在总的码率限制下采用遍历搜索信道码率的方法，得出可用码率在信源编码和信道编码之间的最优分配，使端对端的失真最小。
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| 关 键 词： | 渐进图像 联合信源信道编码 码率分配 |
| 文章编号： | 1009-5896(2005)12-1969-04 |
| 收稿时间： | 2004-06-28 |
| 修稿时间： | 2004-11-08 |
Distortion-based Rate Allocation for Progressive Image Transmission |
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| Wang Hong-xing, Zhang Yong. Distortion-based Rate Allocation for Progressive Image Transmission[J]. Journal of Electronics & Information Technology, 2005, 27(12): 1969-1972. |
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| Authors: | Wang Hong-xing Zhang Yong |
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| Affiliation: | Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China;Department of Electronic Engineering, NAEI, Yantai 264001, China |
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| Abstract: | A dynamic rate allocation method is presented which is based on the compression rate of image source coder, channel rate, channel characters and their influence on the distortion of progressive image. The best channel rate is selected according to the optimal rate allocation criterion between the source coder and channel coder, which ensures to achieve the minimal end-to-end distortion. |
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| Keywords: | Progressive image Joint source channel coding Rate allocation |
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