An algorithm based on photo consistency for image feature point matching

摘要

Matching image feature point by the SURF (Speed-up Robust Features) algorithm needs to loop through all feature points on the image to be matched, which will take a long computation time. In order to solve this problem, it is proved based on the photo consistency that the Hessian matrix determinants between the matched feature points are equal in theory. Experimental results show that because of the influences of light and other elements, the ratio of the Hessian matrix determinant of 95 percent of the correct SURF feature point's pairs is between 0.7 and 1.5. Based on the relation of the Hessian matrix determinants between the matched feature points, a fast image feature point matching algorithm is proposed, which improves the recognition rate of feature points, and it makes over twice faster than the SURF algorithm.