An Improved SIFT Features Reversed Matching Algorithm

Study the sift algorithm,and according to the appliance of stereo matching technology on vehicle's back-up aid system,make improvement on it.In order to solve the search problem in high dimensional space,add the epipolar constraint on the obtained feature vector matches,which can decrease the searching space from Two-dimensional image to One-dimensional linear search,then shorten the matching time,and reduce the computational complexity.At the same time,for the situation of the number of matches increasing with the threshold,and getting higher error rate,reversing matching is done,which can get further improve on the accuracy of image matching.