基于改进Web墨卡托投影的瓦片地图服务设计与实现

发布时间：2018-07-10 13:31

本文选题：改进Web墨卡托投影 + 瓦片　；参考：《测绘工程》2016年02期

【摘要】：为解决网络地理信息应用二、三维一体化显示需要,通常做法是处理并存储两套不同投影的地图瓦片数据,一套采用Web墨卡托投影,面向二维地图应用;一套采用经纬度坐标,面向三维地图应用。这在一定程度上降低数据处理效率、浪费存储资源。文中提出一种改进Web墨卡托地图投影方法,并设计一种面向影像地图和DEM数据的瓦片化方法。方法生成的影像地图瓦片数据既能同时面向二维地图和三维可视化场景使用,又有效解决Web墨卡托投影不支持高纬度地区栅格地图表达的缺陷。将新型的地图投影和数据模型通过瓦片地图服务系统进行验证,证明这种新改进的投影和影像,以及DEM瓦片化方法具备较高的实用性。
[Abstract]:In order to solve the need of two and three dimensional integrated display of network geographic information, the usual method is to process and store two sets of different projection map tile data, one is to adopt Web Mercator projection for two-dimensional map application, the other is to adopt longitude and latitude coordinates. Face the application of 3D map. To a certain extent, this reduces the efficiency of data processing and wastes storage resources. In this paper, an improved method of Web Mercator map projection is proposed, and a tile method for image map and Dem data is designed. Methods the generated image map tile data can be used for both 2D map and 3D visual scene, and it can effectively solve the problem that Web Mercator projection does not support the representation of grid map in high latitude area. The new map projection and data model is verified by the tile map service system, which proves that the new improved projection and image, as well as Dem tile method, have high practicability.
【作者单位】：信息工程大学地理空间信息学院;地理信息工程国家重点实验室;
【基金】：国家自然科学基金资助项目(41201469;41071297)
【分类号】：P208

【相似文献】