Introduction - If you have any usage issues, please Google them yourself
Based on the feature points superimposed phase detection method: calculation of an image overlay code phase, phase is superimposed on the invariant measure and contrast the characteristics of significance. At the same time, it was appropriate to identify all the characteristics of phase-point, not only measurement of 0-180 degrees phase angle. The role of the return characteristics of the type of picture. However, note that its role here is just for reference reasons.