| 基于H.264的改进时域误码掩盖算法 |
| |
| 引用本文： | 赵德祥,崔慧娟,唐昆.基于H.264的改进时域误码掩盖算法[J].信息技术,2011(10):70-74,79. |
| |
| 作者姓名： | 赵德祥 崔慧娟 唐昆 |
| |
| 作者单位： | 清华信息科学与技术国家实验室,北京,100084 |
| |
| 摘 要： | 提出一种模式自适应的误码掩盖算法。对宏块进行误码掩盖时,对宏块的模式进行估计,选择最优的模式进行误码掩盖。这样可以近似地恢复了宏块运动矢量和编码模式,而不是通常算法中仅仅只恢复运动矢量。通过一定的实验测试,该算法在不同的序列和不同的丢包率均稳定的优于单一模式的误码掩盖算法。
|
| 关 键 词： | 误码掩盖 优先级 模式 自适应 |
An improved temporal error concealment algorithm for H.264 |
| |
| ZHAO De-xiang,CUI Hui-juan,TANG Kun.An improved temporal error concealment algorithm for H.264[J].Information Technology,2011(10):70-74,79. |
| |
| Authors: | ZHAO De-xiang CUI Hui-juan TANG Kun |
| |
| Affiliation: | ZHAO De-xiang,CUI Hui-juan,TANG Kun(Tsinghua National Laboratory for Information Science and Technology,Tsinghua University,Beijing 100084,China) |
| |
| Abstract: | Error concealment techniques are widely used in video decoder with error-prone communication channels to eliminate the effect which caused by lost information in video stream.This paper present an adaptive algorithm for H.264.First,this algorithm divides a macroblock into 16 4x4 sub-blocks,then calculates the priority of every sub-block,the sub-block with the highest priority is recovered and the Priority of the rest sub-blocks are updated.Repeat this process until all sub-blocks are recovered.After that,th... |
| |
| Keywords: | error concealment priority mode adaptive |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
