基于块分裂合并的运动估计法先用小尺寸的块进行运动估计，通过分析各块的匹配误差图来表征块的分裂与合并，将运动相关性好的块合并成一个块，得到新的运动矢量．同时还设计了使估计量尽可能接近真实运动的块合并判决准则．实验表明，该方法能得到更接近物体真实运动且一致性好的运动矢量． The motion estimation method based on block splitting and merging firstly uses the small size block to estimate the motion, and then analyzes the splitting and merging of blocks by analyzing the matching error map of each block, and merges the blocks with good motion correlation into one block to obtain a new motion Vector. At the same time, we design a block merger decision criterion that makes the estimator as close to the real motion as possible. Experiments show that this method can get the motion vector that is closer to the object’s real motion and consistent.