| AVS-M中基于全零块检测的运动估计快速算法 |
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| 引用本文： | 刘敏,魏志强,李翠苹,王岩.AVS-M中基于全零块检测的运动估计快速算法[J].华中科技大学学报(自然科学版),2007,35(Z1). |
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| 作者姓名： | 刘敏 魏志强 李翠苹 王岩 |
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| 作者单位： | 中国海洋大学,计算机科学系,山东,青岛,266071 |
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| 基金项目： | 国家自然科学基金
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山东省科技发展基金 |
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| 摘 要： | AVS-M标准是中国最近自主制订的数字音视频编码系列标准(AVS)中的第七部分:移动视频编码标准.根据AVS-M视频编码标准的新特点,对其中的全零块检测阈值进行了推导,提出了一种基于全零块检测的运动搜索提前终止准则.针对AVS-M的多编码模式,进一步将全零块检测用于AVS-M中多种编码模式的选择,有效地提高了运动估计的效率.实验结果表明,该方法在保持AVS-M编码器编码性能的同时,可显著提高编码器的编码速度.
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| 关 键 词： | AVS-M标准 全零块检测 整数变换 运动估计 |
A fast algorithm of motion estimation based on all-zero block detection in AVS-M |
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| Liu Min,Wei Zhiqiang,Li Cuiping,Wang Yan.A fast algorithm of motion estimation based on all-zero block detection in AVS-M[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(Z1). |
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| Authors: | Liu Min Wei Zhiqiang Li Cuiping Wang Yan |
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| Abstract: | AVS-M is the latest video coding standard for mobile application,which is the part 7 of domestic AVS(audio video coding standard) series standards.According to the new characteristics of AVS-M standard,the threshold for all-zero block detection is derived and an advanced stop principle of motion estimation based on all-zero block detection is proposed.In accordance with the feature of multiple encoding modes,all-zero block detection is applied to the AVS-M mode selection,and further improves the efficiency of motion estimation.Experimental results show that the proposed algorithm can reduce encoder complexity significantly while maintaining PSNR and bit rate almost unchanged. |
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| Keywords: | AVS-M all-zero block detection integer transform motion estimation |
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