基于相位相关算法的实时图像匹配系统  

Real Time Imaging Matching System Based on Phase Only Correlation

作　　者：吴四夫[1] 付宇卓[1] 邓红梅[2] 

机构地区：[1]上海交通大学微电子学院,上海200030 [2]上海师范大学数理信息学院,上海200234

出　　处：《计算机仿真》2005年第11期84-86,90,共4页Computer Simulation

基　　金：国家863计划个人信息处理终端SoC(2003AAIZI350);上海市科委AM基金资助

摘　　要：相位相关算法是一种应用很广泛的图像匹配方法,它与极坐标变换相结合而得到旋转不变相位相关算法,两者可以对目标进行判准并精确检测出平移量和旋转量。但由于算法的计算量大,基于通用平台实现时实时性差,该文通过对其算法的分析仿真及优化,提出并实现了由DSP和FPGA组成的系统平台解决方案,计算量很大的快速傅立叶变换用FPGA来完成。结果证明此方案具有实时性好、性能高、通用性强等优点,它可广泛应用与工业控制、医疗卫生等各个领域的图像测量和目标定位系统中。Phase only correlation algorithm as a kind of image matching method, together with rotation - invariant phase only correlation algorithm which derives from polar transform, is used widely and can recognize the correlated image and precisely detect translation and rotation angle between two correlated images. Because of the heaviest calculation, the real - time can＇ t be realized in general electronic system. This paper provides the analysis, simulation and optimization for them, and realizes them in the ＂DSP ＋ FPGA＂ platform where FPGA completes the 2 -D FFT that requires heaviest calculation power. As a result, this solution has many advantages such as real -time, high performance and good compatibility. It can be widely used in various fields, especially in the industry system, and medical treatment system.

关 键 词：图像匹配 相位相关 实时 

分 类 号：TN919[电子电信—通信与信息系统]