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一种快捷的高精度运动估计方法 被引量:2

Simple and High Precision Fast Motion Estimation Algorithm
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摘要 因为高清数字电视对图像质量有严格的要求,所以高清数字电视编码采用了计算十分复杂的高精度运动估计方法,而非快速的简单运动估计方法,这就导致了运动估计在视频编码中占用了很多的计算资源。提出了一种结合不同宏块运动特性的方法,以便自适应地选择高精度运动估计方法或简单运动估计方法。该方法通过改变宏块编码顺序与运动向量预测顺序的关系,在减少70%运算时间的情况下仍能保持与高精度方法相同的搜索精度。 Because of intense requirement of image quality for digital television,high precision motion esttmatlon atgo- rithms were recommended instead of simple motion estimation algorithms. To benefit from both the speed of simple search and the accuracy of high precision search, a new method making use of inter macroblock characteristic was proposed. According to experiments, a reduction of 70 % execution time is attained while still maintaining the same accuracy of high precision search.
出处 《计算机科学》 CSCD 北大核心 2010年第2期282-285,共4页 Computer Science
基金 国家863计划项目--基于动漫数据库的计算机辅助动漫创作关键技术与系统(2007AA01Z340) 广东省自然科学基金项目--新一代视频编码标准中运动估计关键技术的研究(07003728)资助
关键词 视频编码 运动估计 预测运动向量 Video coding, Motion estimation,Predictor
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参考文献9

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同被引文献17

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