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本文提出一种新的运动矢量估计的方法．其基本思想是先对流体图像进行予处理，再采用序贯相似性检测算法（ＳＳＤＡ）快速得到像素精度的位移量，最后再在像素范围内使用相位拟合算法（ＰＥＡ）快速且方便地估计出亚像素的位移精度．虽然本方法是基于流体运动分析的数字粒子图像测速（ＤＰＩＶ），但其基本原理可广泛地用于一般的运动矢量估计．
This paper presents a new method of motion vector estimation. The basic idea is to preprocess the fluid image and then use the Sequential Similarity Detection Algorithm (SSDA) to get the displacement of the pixel precision rapidly. Finally, it is quickly and conveniently estimated using the phase fitting algorithm (PEA) in the pixel range Sub-pixel displacement accuracy. Although this method is based on Digital Particle Image Velocimetry (DPIV) for fluid motion analysis, its basic principle can be widely used for general motion vector estimation.