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图像采集处理系统是激光成像雷达系统的重要组成部分 ,文中简要介绍了一种主 /从计算机结构的图像采集处理系统的设计、组成、工作过程及软件流程。利用主 /从计算机的中断功能实现图像数据的帧实时采集、处理和显示。采用CPLD设计了专用的DMA控制器并与从计算机ADSP2 10 2 0共用两片相同的双端口存储器 ,通过同步切换存储器控制完成连续的图像缓存和采集处理。试验结果表明 ,该系统能很好地完成激光成像雷达的帧实时采集处理和显示。
The image acquisition and processing system is an important part of the laser imaging radar system. In this paper, the design, composition, working process and software flow of an image acquisition and processing system with master / slave computer structure are briefly introduced. Using the master / slave computer interrupt function to achieve real-time image frame data acquisition, processing and display. CPLD is used to design a dedicated DMA controller and share the same two-port memory with two ADSP2 1020 computers. The synchronous image memory and control are used to complete continuous image caching and acquisition processing. The experimental results show that the system can accomplish the frame real-time acquisition processing and display of laser imaging radar.