论文标题
修改共轭方向方法进行运动估计
A modification of the conjugate direction method for motion estimation
论文作者
论文摘要
提出了针对运动估计的不同块匹配替代方案的比较研究。该研究的重点是计算负担和预测准确性的客观措施。与现有算法一起，已经测试了几种新的变化。报道了先前在文献中相关的共轭方向方法的有趣修改。该新算法在计算复杂性和运动矢量估计的准确性之间表现出了良好的权衡。使用一系列人工图像来评估计算复杂性，该图像旨在结合各种运动向量。块匹配方法的性能是根据运动补偿和原始帧之间误差信号的熵来衡量的。
A comparative study of different block matching alternatives for motion estimation is presented. The study is focused on computational burden and objective measures on the accuracy of prediction. Together with existing algorithms several new variations have been tested. An interesting modification of the conjugate direction method previously related in literature is reported. This new algorithm shows a good trade-off between computational complexity and accuracy of motion vector estimation. Computational complexity is evaluated using a sequence of artificial images designed to incorporate a great variety of motion vectors. The performance of block matching methods has been measured in terms of the entropy in the error signal between the motion compensated and the original frames.
