The three-step search method is a commonly used fast motion estimation algorithm, but its initial step length is too big, thus the estimation effect of slow motion sequence is not so satisfactory.
三步搜索法是一种常用的快速运动估计算法，但由于它的初始步长太大而导致对缓慢运动序列的估计效果不能令人满意。
This controller realizes IMMD algorithm by equal step length searching, and good results have been achieved.
该控制器用等步长搜索方法，实现了IMMD算法，获得了满意结果。
The way of accelerating iteration process was discussed also. By improving Simpson's algorithm, for variable step length, integral operation may increase in speed by one to dozens of times.
本文还讨论了加速迭代过程的方法，将变步长辛普生积分算法作适当的改进，其积分运算速度可提高一到几十倍。
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