介绍和分析了在当前成像跟踪系统中常用的几种点目标滤波检测算法。为了满足图像处理实时性要求，设计了一套针对图像滤波算法的FPGA硬件实现结构。该结构具有FPGA高速并行计算能力，能在信号读出的过程中实时地完成多种滤波处理。成像实验证明该方案切实可行，具有良好的实时滤波效果。

Several common used filter algorithms for point target detection in the image tracking system are introduced and compared in details. To meet the increasing requirement of real-time image processing, a set of hardware structure is designed in FPGA for implementing image filtering algorithms. The structure takes full advantage of high speed and parallel processing ability of FPGA. Multiple filtering processes are simultaneously implemented in real time just when image signal is read out. Experiments prove that the design of the structure is successful and a perfect real-time filtering result is achieved.