基于Web地图瓦片服务(WMTS)的林区三维场景构建

Construction of forested area three-dimensional scenes based on Web Map Tile Service (WMTS)

在轻量级林业信息系统开发中,必须降低获取林区的遥感地图及相关空间数据的成本,提高开发效率。通过分析Internet网络上国内外地理信息服务商提供的Web地图瓦片服务(以下简称WMTS)理论及架构,低成本高效率获取遥感图像及空间数据,并应于林区三维场景构建中。通过Google公司提供WMTS,获取到长沙市天马山林区遥感图像及高程数据,利用DirectX计算绘图技术,构建长沙市天马山林区三维场景。利用WMTS服务能有效解决林业信息系统中,数据昂贵,开发成本高,信息不够全面等问题,为轻量级林业信息系统高效开发提供便利。

In the development of lightweight forestry information system,the costs to obtain forest remote sensing map and spatial data should be reduced,and the development efficiency should be raised.Through analyzing the theory and structure of Web Map Tiles Service（WMTS） by domestic and foreign geographic information service provider on the Internet network,the remote sensing images and spatial data were obtained at low cost and high efficiency,and the achivements were applied in the construction of forested area three-dimensional scenes.Through the WMTS providing by Google companies,the remote sensing imagery and elevation data of Tianma mountain forest zone in Changsha city were acquired.The three-dimensional scenes of Tianma mountain zone in Changsha city were constructed by adopting DirectX graphics technology.Therefore,the WMTS services system can effectively solve the problems in building forestry information system,such as expensive data,high developmental costs,less information,etc.,and it provides a highly efficient development and useable way for the lightweight forestry information system.