图像匹配处理机是目标识别系统的重要组成部分.提出了采用以TMS320C6415 DSP为核心处理器实现图像匹配处理机的方案.该方案使用SDRAM存储实时图像数据、预装和预置数据、中间数据和程序代码,采用FLASH ROM固化程序及预装、预置数据,并采用双端口RAM实现与上级控制装置的通信.采用DSP的图像匹配处理机,由于用软件实现匹配算法,因而系统更加灵活.TMS320C6415是目前世界上最先进的DSP之一,具有5760 MIPS的处理能力.实验表明,本系统采用FFT相关算法,可在0.02 s内完成两幅512×512图像的配准;若采用积相关算法,可在0.1 s内完成72×72图像与320×320图像的配准.该系统结构紧凑、可靠性高、实时性强,为图像匹配系统提供了新的高速处理平台.

Image matching machine is an important part of target recognition system. The scheme using TMS320C6415 as the core processor to realize an image matching system is put forward in this paper.SDRAM storing real-time pictures,preassembled and preset data,temporary data and program code, FLASH ROM solidified with code,preassembled and preset data, and dual port RAM realizing communication with superior control equipment are adopted in this project.Implementing image matching algorithm with software, image matching system with DSP is more flexible. TMS320C6415 is one of the most advanced DSPs in the world, and it has a processing ability of 5760 MIPS.Experiments show that this system is able to match two pictures of 512×512 within 0.02 s with PTT correlation algorithm or a picture of 72×72 and another picture of 320×320 within 0.1 s with product correlation algorithm. This system is featured by compact construction,high reliability,and good real-time ability.The system provides a new high-speed processing platform for an image matching system.