Reliable matching method based on wavelet edge enhancement
Zhe Chen · Guangdian gongcheng · 2005
In order to improve the reliability of scene matching, a reliable matching method based on wavelet edge enhancement is presented. The real-time image and the referenced image are decomposed to wavelet pyramids and edge-enhanced using the fourth order center B spline wavelet to extract reliable edge features. The matching is done based on wavelet edge enhanced images in coarse scale. The first five peak values are selected as the candidate matching points to ensure that the true matching point are included. Real-time image is corrected in a way of rotation. Double thresholds are determined on the basis of local gray features around the candidate matching points, and the binary edge images are obtained with morphological linking operator. Correlation matching is implemented again and the maximal peak value is chosen as the true matching point. Then precise matching point is obtained in fine scale.Matching experiment is completed with the method. The results show that the matching probability of the method increases by 6.95% compared with the method based on wavelet binary edge extraction.