地图中道路的自动识别与重建

本文针对地图中具有一定宽度的道路的识别,提出一种双边信息判断方法,它有跟踪准确、有效地填补间隙、正确穿越交叉点和桥梁,且不需要对地图作去噪声和细化等预处理,因而具有识别速度快的优点。采用该方法,对1∶50,000实际地图进行处理,获得了满意的结果。

Automatic Extraction and Reconstruction of Roads From Maps

A method for extracting features of main roads such as railways and highways from maps, which can quickly calculate the center lines by judging the information of both sides of the roads, is described. It is applied to the automatic computer input of map data and has advantages of passing through the cross points of different kinds of roads correctly, jumping over the bridges, which cut off the roads on maps, automatically without stopping the trace, filling in the gaps and distinguishing the characters between railways and highways effectively. Because there is no neel for preprocessing such as removing noise and thinning, the approach has a higher processing speed. The efficiency of the method is demonstrated by processing binary images of maps with the scale of 1/50 000.