变符号准则匹配方法研究

Research on the Matching Method ol Stochastic Sign Change Criterion

本文对变符号准则匹配法进行了理论分析.证明了在不考虑遮挡和几何失真的条件下,匹配点处的符号变化次数为最大,并且对于该算法的抗遮挡性能进行了讨论.在DPS-8/52计算机系统上用图象进行了大量的模拟实验.理论分析和实验结果证明,变符号准则匹配方法不仅在信噪比小于1的情况下能够正确匹配,同时在特定条件下具有抗遮挡的能力.

In this paper, a matching method of stochastic sign change criterion is theoretically anlayzed. It is proved that the sign change number at matching point is maximum when the overlap and geometrical distortion are negligible. At the same time, the ability of anti-overlap is discussed. Finally, a lot of simulation experiments are done on DPS-8/52 computer system with two machine part images. The theoretical analysis and experimental results show that the matching method of stochastic sign change criterion not only can correctly complete image matching under the situation of SNR<1, but also has the ability of anti-special overlap.