广东省地理国情普查DEM精细化生产方法浅析——以广东省省级任务区为例

Analysis of DEM Fine Production Method in Geographical Conditions Census——As the Operating Area of Guangdong Provincial Level for Example

以广东省地理国情普查数字高程模型（digital elevation model,DEM）精细化为例,论述了省级任务区DEM精细化的工作内容与流程,重点阐述了基于数字线划地图（digital line graphic,DLG）数据的整个生产流程各个步骤的内容和具体方法,包括DLG数据预处理、DEM数据制作、构建、接边及元数据批量制作。

Taking DEM fine processing of Guangdong geographical conditions census as example,this paper discusses the specific work content,process of Guangdong provincial level DEM intensification,and focuses on various steps based on the whole the production process of DLG,including the data pretreatment,data making,data build,edge smoothing and metadata mass production.