| H.264解码器设计与算法优化 |
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| 引用本文： | 刘小成,曹默.H.264解码器设计与算法优化[J].微计算机信息,2011(5). |
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| 作者姓名： | 刘小成 曹默 |
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| 作者单位： | 华东理工大学机械与动力工程学院; |
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| 摘 要： | 为了降低嵌入式平台下视频编解码的预测搜索算法复杂度,文章给出了基于达芬奇TMS320DM6446平台的H.264解码器设计,并对H.264帧内帧间预测模式做了分析,提出了一种对H.264帧内预测和帧间预测模式选择的算法,该算法通过计算并比较各种模式下的SAE(SumofAbsoluteError,绝对误差和)值,并选取SAE值最小的模式作为最佳预测模式的方法来达到优化算法的目的。实验结果表明,在峰值信噪比基本不变的条件下,可以有效避免重复帧内搜索,使预测搜索算法复杂度平均降低78%左右。
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| 关 键 词： | H.264 TMS320DM6446 解码器 帧内预测 帧间预测 |
Design of H.264 Decoder and the Optimization of Algorithm |
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| LIU Xiao-cheng CAO Mo.Design of H.264 Decoder and the Optimization of Algorithm[J].Control & Automation,2011(5). |
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| Authors: | LIU Xiao-cheng CAO Mo |
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| Affiliation: | LIU Xiao-cheng CAO Mo(Dept.of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | To reduce the computational complexity of the prediction searching algorithm of video codec based on embedded platform,the paper presents a design of H.264 video decoder based on TMS320DM6446,and analyses the H.264 Intra-Inter prediction modes.The paper expatiates a fast Inter-Intra decision algorithm of H.264,which calculates and compares the SAE(Sum of Absolute Error) of whole modes,and select the minimum SAE as the best mode of all.Experimental results show that the algorithm could avoid iterative intra ... |
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| Keywords: | H 264 TMS320DM6446 decoder intra prediction inter prediction |
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