关键词: 图像匹配, 成像光路, 视场交汇, 图像重叠

Abstract: Image matching is a key technology in the field of computer vision.An image matching technology based on imaging optical path is proposed to solve the problem of heavy computation，slow speed and low accuracy in image matching.Firstly，a camera model based on binocular vision is established，and the geometric model of the camera intersection field is determined according to the camera model’s imaging optical path.The largest possible image overlap region of the two images is estimated by means of geometrical relationship.Then the image features matching is carryed out in the regions by using the traditional features matching algorithm.Experimental results show that，the proposed method which compared with extracting and matching feature points in the whole image can effectively improve the matching speed and reduce the occurrence probability of mismatch.

Key words: image matching, imaging optical path, field intersection, image overlap