针对数字景象匹配中采用单一算法所存在的问题,提出了采用归一化积相关和相位相关二者结合的复合匹配算法,实现了优势互补,有效地提高了数字景象匹配的概率和精度.为了进一步改善匹配性能,还运用侧抑制竞争技术提取图象边缘,采用适当降低分辨率的策略来提高运算速度,使其更接近实际工程应用.仿真证明,该方案较为成功.

To resolve the problems existed in unitary algorithm for digital image registration, a hybrid algorithm combining unitized product and phase correlations is put forward. It upgrades the registration probability efficiently. To improve probability and speed of registration more, side-constraint-competition is used to constraint the edge of image in the paper, and reduction of resolution is taken to decrease calculation scale and increase speed of registration. Simulation shows that the algorithm is successful and practical.