针对动态图象运动矢量搜索过程中，使用普通的对数搜索方法有可能无法搜索到真实最优运动矢量的问题，分析了产生该问题的原因，并提出使用运动矢量多重跟踪方法进行运动矢量搜索。在图象匹配的过程中应用亚采样模板有效地降低了该方法的计算量。对大量数据的分析试验证实，该方法具有很好地适应多极点匹配图象的特点，能准确搜索到真实最优运动矢量点。

In the process of dynamic images' motion vector estimation, normal logarithm vector searching method has high probality of not able to find the true motion vector. The reason that causes such a problem is analysised in the paper and a new motion vector estimation method called multi tracing estimation method is introduced. In the process of image matching, a sub sample stencil is used by this multi tracing vector estimation method in order to reduce the quantity of calculation. Many frames of image are tested by this method. The result shows that this method can adapt the multi pole matching image situation better than logarithm vector searching one and can find the motion vector more accurately.