实景三维中国建设项目中的DEM成果质量检查方法与实践

Method and Practice of DEM Quality Inspection in Real 3D Construction Projects in China

数字高程模型(DEM)作为实景三维中国建设(简称“实景三维”)项目中的重要成果之一,对该项目整体成果质量产生了重要影响。本次研究针对实景三维项目中DEM模型的两大分区类型提出了平面晕渲效果图分析法、立体模型检测法、等高线套合分析法以及差值分析法等4类质量控制方法,并对这4类质检方法的运用原则以及检查尺度加以分析。

Digital Elevation Model(DEM),as one of the important achievements of the real 3D construction project in China("real 3D"for short),has an important impact on the overall quality of the project results.Aiming at the two partition types of DEM model in the real 3D project,this study put forward four types of quality control methods,such as plane shading effect map analysis method,three-dimensional model detection method,isoline set analysis method anddifference analysis method,and analyzed the application principle and inspection scale of these four types of quality control methods.