基于等高线和Hausdorff距离的地形匹配方法

Terrain Matching Algorithm Based on Contour Line and Hausdorff Distance

研究了一种基于等高线的三维地形匹配方法,分别从实时高程图和参考高程图中提取等高线,将三维地形匹配转化为等高线匹配。通过位置坐标集合的平移算子和旋转算子作用,并利用平均Hausdorff距离度量参考图中不同等高线段的元素集合和实时图等高线段的元素集合的相似度。仿真试验表明,这种匹配方法具有较强的抗噪声和抗形变能力。

A contour-based 3D terrain matching method was extracted from the reference DEM and real-time recovered studied. In the method, an elevation contour map which was terrain was used to convert 3-D terrain matching to contourbased matching. After the moving and rotating arithmetic operators operate the set of the elements of the contour, the mean Hausdorff distance （MHD） was used to measure the similarity between the contour lines from the reference DEM and the contour line from the real-time recovered terrain. The simulation shows that the algorithm is insensitive to noise and distortion .