| 基于时空相关性的快速运动估计算法 |
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| 引用本文： | 龚志勇,涂海洋.基于时空相关性的快速运动估计算法[J].计算机与网络,2010(9):42-44. |
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| 作者姓名： | 龚志勇 涂海洋 |
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| 作者单位： | [1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]空军驻石家庄地区军事代表室,河北石家庄050081 |
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| 摘 要： | 在分析宏块时空相关性的基础上，对双十字形运动估计算法进行改进，加入了搜索起点预测策略、自适应的搜索模式和自适应搜索终止准则，设计了一种快速运动估计算法。采用JM86算法对改进前后的算法进行比较，实验结果表明，改进后的算法没有明显降低恢复后的图像质量，但计算速度提高了4倍左右，特别适合于处理能力有限的嵌入式系统使用。
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| 关 键 词： | 时空相关性 双十字形 运动估计 起点预测 |
Fast Motion Estimation Algorithm Based on Spatiotemporal Correlation |
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| Affiliation: | GONG Zhi-yong TU Haaaai-yang (1 The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China2 Air Force Military Agent in Shijiazhuang, Shijiazhuang Hebei 050051, China) |
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| Abstract: | Based on analyzing spatiotemporal correlation macroblock, this paper proposes a fast motion estimation algorithm which can improve dual-cross shape motion estimation algorithm and add initial search point prediction strateg3r, adaptive searching mode and adaptive searching stop criteria. The JM86 algorithm is used to compare algorithms before and after improvement. The experiment results indicate that the improved algorithm not only has little effect on the restored image quality, but also increases the computation speed about 4 times, and it is especially suitable for the embedded system with limited processing capability. |
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| Keywords: | spatiotemporal correlation dual-cross shape motion estimation initial search point prediction |
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