一种抗比例变化的影像图与矢量数据匹配方法

由于矢量图匹配中涉及比例变化的匹配算法较少,提出了一种抗小比例变化的影像图与矢量图匹配方法。该方法先对遥感影像进行特征提取,然后与GIS矢量数据进行由局部到整体的动态规划匹配。具体过程为先进行点匹配,寻求坐标变换,再进行线匹配,求得线间Hausdorff距离最小为最优匹配。仿真实例表明该方法能够准确地匹配,并抗比例变化,可行性高。

An anti-scale changes method in image maps and vector data matching

In the scene matching guidance, there is often a small scale change between the captured image maps and GIS vector data, this paper presents an anti-scale changes algorithm in the image maps and vector matching method. The method first extracts feature points of remote sensing images, and then matches with GIS vector data from the local to the whole of the dynamic programming. Carry out a specific process for the first match point, then match line, obtain the best match for the minimum Hausdorff distance between the lines. Simulation example shows that the method is reliable and adaptable.