The target is easily lost by using Camshift when the target is blocked or accelerated in complex background. The reason for this is Camshift is an algorithm that uses color characteristics to track the target. For solving above shortcomings,the improving Camshit algorithm is proposed in this paper. Firstly,the search window is automatically selected using frame difference method. Then,the weighted color histogram is introduced to eliminate the interference of similar background colors. Finally,the accelerat...