| 基于码率优化分配的感兴趣区域编码算法 |
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| 引用本文： | 陈红新,牛海峰.基于码率优化分配的感兴趣区域编码算法[J].计算机工程,2010,36(8):211-213. |
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| 作者姓名： | 陈红新 牛海峰 |
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| 作者单位： | 中国海洋石油总公司研究中心,北京,100027 |
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| 摘 要： | 提出一种基于码率优化分配的感兴趣区域(ROI)编码算法，根据码率优化分配的原理，在压缩后率失真优化理论基础上，通过感兴趣因子对ROI有贡献的码块进行失真估计的缩放，为ROI码块分配较多的码率，以提高ROI在编码时的优先权。实验结果表明该算法实现了低码率时ROI的优先编码，同时保持一定的背景效果。
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| 关 键 词： | 图像编码 感兴趣区域 压缩后率失真 |
| 修稿时间： | |
Region of Interest Coding Algorithm Based on Bit-rate Optimal Distribution |
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| CHEN Hong-xin,NIU Hai-feng.Region of Interest Coding Algorithm Based on Bit-rate Optimal Distribution[J].Computer Engineering,2010,36(8):211-213. |
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| Authors: | CHEN Hong-xin NIU Hai-feng |
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| Affiliation: | (Research Center of China National Offshore Oil Company, Beijing 100027) |
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| Abstract: | Region Of Interest(ROI) coding algorithm based on optimizing rate allocation is presented. According to principles of optimization and PCRD-opt(Post-Compression Rate-Distortion optimization), estimations of distortion of code blocks that contribute to ROI are enlarged through factors of interest. As it comes to the code blocks that get comparatively more allocation of rate, the priority of ROI is accordingly enhanced. Experimental results show the algorithm can get priority in coding and decoding and simultaneously maintains a certain background effect. |
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| Keywords: | image coding Region Of Interest(ROI) Post-Compression Rate-Distortion(PCRD) |
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