一种直线特征遥感影像与GIS矢量数据匹配方法

A Matching Method of Remote Sensing Image and GIS Vector Data Based on Strait Line Features

针对飞行器的匹配制导,提出了一种基于直线特征的遥感影像与GIS矢量数据自动匹配方法。该方法首先利用遥感影像的概略方位参数实现预处理后的GIS数据与遥感影像概略叠加;接着对GIS直线数据叠加所在的遥感影像区域开辟窗口进行边缘检测;然后利用Hough变换同步进行折线特征提取和特征匹配;在实现过程中采用了金字塔分层和新型投票方法以节省运算时间,最终实现影像特征与GIS数据的成功匹配。实验证明了该方法的有效性和稳健性。

A method of remote sensing images and GIS vector data automatically matching was proposed, which was based on strait line features to complete vehicle guidance. GIS vector data and remote sensing image approximate overlay was achieved making use of the approximate orientation parameters of remote sensing image firstly, edge detection around the GIS vector data on the window that overlapped on remote sensing image was performed secondly, then window feature extraction and matching？based on Hough Transform was performed synchronously, and ultimately image features and GIS vector data matching was achieved successfully. In the implementation process, pyramid stratification and a new voting method have been adopted to save computing time. Experimental results indicated this method was effective and robust.