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鉴于当前遥感图像矢量化效率普遍不高,提出了一种遥感聚合图像的快速拓扑矢量化方法。该方法对聚合图像中的聚合对象进行唯一性标号,并将这个标号作为属性赋予生成的矢量多边形,通过矢量多边形的标号间映射关系便可以快速建立复杂岛屿多边形的拓扑包含关系。试验表明,该方法能够精确地完成斑块对象边界追踪及复杂岛屿多边形处理,并显著提高矢量化的速度。
In view of the fact that the vectorization efficiency of current remote sensing images is generally not high, a fast topological vectorization method for remotely sensed images is proposed. This method uniquely labels the aggregated objects in the aggregated image and assigns them to the generated vector polygons as properties. By using the mapping relationship between vector polygons, the topology inclusion of complex island polygons can be quickly established. Experiments show that this method can accurately track the boundary of patch objects and process complex island polygons, and significantly increase the speed of vectorization.