2.5维地图坐标转换的算法及实现

随着计算机和网络技术的不断发展,三维仿真地图衍生出了一种新兴的表现形式——2.5维地图,其在网络环境中具有高效率、易于发布和高真实感的优点,在互联网地图中具有广泛的应用前景。本文分析了在生产2.5维地图过程中遇到的坐标转换问题,提出了一种二维地图到2.5维地图的坐标匹配算法,可以实现多视觉角度的投影变换,为构建基于B/S的三维仿真地理信息系统提供坐标转换上的支持。

Algorithm of 2.5-Dimensional Map Coordinate Transformation and Its Implementation

With the development of computer and Internet,3D simulation map has derived a new production-2.5D map.The 2.5D map which has the excellence of height efficiency,easily releasing and height third dimension has broad application prospects in the Internet map web.We annlyzed the problem of coordinate transformation in the producting 2.5 D map,and proposed a coordinate matching algorithm from 2D data to the 2.5D map.In the way,we achieved the projection transformation of multi-angle vision,and provided the support on the coordinate transformation for building the B/S 3D geographic information system.