基于数字信号处理器 ( ADSP2 1 0 2 0 ) ,建立了一种主从式实时电视跟踪系统。分析了系统工作原理、构成及主控计算机与 ADSP2 1 0 2 0处理从机之间的控制关系 ,研究了快速中值滤波预处理方法、目标搜索和跟踪过程中波门的设定准则。采用矩持阈值分割方法提取目标 ,采用质心跟踪算法及基于线性微分拟合的记忆外推跟踪技术跟踪目标。 Based on the digital signal processor (ADSP21020), a master-slave real-time TV tracking system is established. The working principle of the system, its composition, and the control relationship between the master computer and ADSP21020 slave are analyzed. The fast median filter preprocessing method, the setting criteria of the target in searching and tracking are studied. The target is extracted by moment-based threshold segmentation method, followed by centroid tracking algorithm and memory extrapolation tracking technique based on linear differential fitting.