一种数字地图自动生成系统及其拼接技术

An Automatic Digital Map Generation System and Map Image Stitching

针对于纸面地图数字化问题,介绍了一种数字地图自动生成系统的功能原理及实现形式,同时详细研究了大幅数字地图自动拼接问题。通过利用数字地图中的节点信息,同时考虑到拼接图中基本都会存在房屋等多边形的情况,先根据拐点信息取得待拼接图的坐标相对关系,再分多种情况对光栅地图数据文件和矢量地图数据文件分别进行自动拼接处理,从而完成对整个数字地图系统的处理。实验结果表明,基于数字地图下的此拼接方法可有效地减少计算时间及内存使用量,提高处理速度,其拼接结果也准确可靠。

This paper presents a system of digital map data generation from pictorial map images and solved the problem of automatic construction of map image stitching in detail. By making use of the information of node, and the fact that map images to be processed always have polygon images, such as houses or street blocks etc., the proposed method gets the corner points information and subsequen relationship of map images, then processes the raster map and vector map respectively, to realize digital map image stitching. Results show that the proposed method built high-quality digital map image stitching in high speed.