浅谈1:10000数字高程模型更新方法和技巧

Discussion on 1:10 000 Digital Elevation Model Updating Method and Skill

在1∶10 000地形图框架要素数据成果中,提取等高线、高程点及面状水系等要素作为此次数字高程模型(DEM)更新的主要数据源。对DEM的制作过程进行了分析归纳,总结了提高数字高程模型质量的有效方法。

This article studies frame elements data of 1∶10 000 topographic map data and extracts the contour,elevation and surface shape as main source of data update for the digital elevation model(DEM).The production process of DEM is analyzed and summarized and effective method to improve the quality of digital elevation model is summed up to improve the surveying and mapping services to support capacity in our province and better serve the economic construction for Guangdong province.