关键词: 小目标跟踪, 现场可编程门阵列, Top-hat变换

Abstract: This paper designs and realizes a real-time and stable infrared small target tracking system on FPGA based on modified Top-hat transformation. It modifies the Top-hat transformation and applies it to the target enhancement for the classic Top-hat’s limitations in target detection. And then, it makes target motion estimation in video sequences and spatial filtering using characteristic filter, then stably and effectively computes the target’s location. In order to get real-time tracking result, it transplants the tracking algorithm into FPGA chip and fulfills the overall architecture design of the system. To deal with the inefficiency of the template window operation realized by classic method, it designs a new template window compute method and applies it into the relative algorithm module. The experiment results show that the proposed system can detect and track well, and can compute the target location in 20 ms completely, and meet the real-time requirements of the small target tracking.

Key words: small target tracking, Field Programmable Gate Array（FPGA）, Top-hat transformation