一种新的快速块匹配运动估计交叉菱形搜索算法

International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003 Pub Date : 1900-01-01 DOI:10.1109/ICNNSP.2003.1281100

Chi-Wai Lam, L. Po, C. Cheung

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引用次数: 66

摘要

为了适应现实世界视频序列的小交叉中心偏置特性，本文提出了一种改进的交叉菱形搜索算法。新算法在前两步中使用一个小的十字形搜索模式来加速平稳和准平稳块的运动估计。实验结果表明，与Diamond search (DS)和Cross Diamond search (CDS)相比，这种新的Cross - Diamond search (DS)算法在保持相似的预测精度的同时，计算量大大减少，特别适用于视频会议序列。

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A new cross-diamond search algorithm for fast block matching motion estimation

In order to fit the small cross-center-biased characteristic of the real world video sequences, an improved version of the well-known cross diamond search algorithm is proposed in this paper. The new algorithm uses a small cross-shaped search patterns in the first two steps to speedup the motion estimation of stationary and quasi-stationary blocks. Experimental results show that this new cross-diamond search algorithm could achieve much higher computational reduction as compared with Diamond Search (DS) and Cross Diamond Search (CDS) while similar prediction accuracy is maintained, and it is especially suitable for videoconferencing sequences.

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International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003

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