【摘要】 普通运动矢量搜索算法并不能完全适应低码率图象传输系统的特点，运算量也较大，本文经过试验分析，改进了适用于低码率系统的图象搜索算法，并提出使用亚采样模板匹配方法减少运动矢量搜索过程中的计算量。试验结果表明，新算法可以达到接近原算法的精度，但计算量大大减少。更多还原

【Abstract】 Normal motion vector estimation method can not adapt to low bit-rate image transmission system completely and its computation quantities are too large. An improved motion detection method that adapts to low bit-rate image transmission system is introduced after experiment analysis. A new method using molding board matching during motion vector detection in order to decrese computation quantities is also introduced. Experiment result shows that this new method can achieve nearly the same precision as normal method but has only half of its computation quantities.更多还原