雷达图像与电子海图的实时匹配算法

针对已抽取海岸边缘特征并二值化的电子海图和已提取海岸边缘特征并缩放至海图比例的实时雷达图像进行匹配。匹配时,先提取待匹配曲线的特征点构成特征段,然后用特征段之间曲率的Hausdorff距离来度量分段轮廓之间的相似性,获得匹配结果。该算法充分利用轮廓线的几何特征信息,既保证了较好的匹配精度,又能显著提高算法速度,实现雷达的实时匹配定位。

The Real-Time Matching Algorithm for Radar Image With Electronic Chart

The paper works with a binary electronic chart which has extracted the characteristics of coastal edge and a binary radar image which has been zoomed out in electronic chart at real-time.Several feature segments that consist of feature points depict a contour and then the matching fragments are obtained.For the full use of the geometrical features of the contour,the algorithm gives preferable matching precision and increases computational speed obviously so as to realize radar real time matching positioning.