可量测影像与实时影像的匹配导航方法

A Navigation Method Based on Real Time Image Matching With Digital Measurable Image

本文提出了一种可量测影像与实时影像的匹配导航方法。考虑到不同光照、不同位置姿态情况下所成影像的匹配要求，首先，研究了SIFT特征匹配和RANSAC抗差处理相结合的影像特征点提取及影像匹配方法；其次，根据影像特征点坐标和载体位置坐标的空间对应关系，提出了从影像特征点坐标到载体空间坐标的转换方法；最后，通过实验验证了该方法的有效性。

A navigation method based on real time image matching with digital measurable image （DMI） is proposed in this paper. Considering the matching requirements of images generated under different illumination conditions and with different posi- tions and attitudes, a method combining SIFT image matching with RANSAC robust algorithm is presented to extract image fea- tures and matching image. According to the corresponding relationship between coordinates of key feature points and coordinates of vehicle positions in space, a transformation method from image feature point coordinate to vehicle spatial coordinate is pro- posed. At last, the effectiveness of the proposed methods is verified by experiment.