At present, the technology of generating high precision and high current digital elevation model (DEM) based on airborne light detection and ranging (LiDAR) data has been widely used. It is urgent to control the quality of DEM data scientifically and efficiently. In this paper, the authors introduce the three-step inspection method based on practical production experience, which includes human-machine interpretation discriminant inspection, semi-automatic inspection and automatic inspection through python. This method comprehensively covers the quality inspection of DEM generated by airborne LiDAR technology and provides the solution, thus improving the efficiency and accuracy of quality inspection and filling the blank of nonexistence of ready-made software and methods for completing the work.
孟蕾, 林超. 机载LiDAR技术生成DEM的质量检查与解决方案探讨[J]. 国土资源遥感, 2020, 32(1): 7-12.
Lei MENG, Chao LIN. Discussion on quality inspection and solution of DEM generated by airborne LiDAR technology. Remote Sensing for Land & Resources, 2020, 32(1): 7-12.
Wang Z M, Li S L . Mapping and research of 1∶10 000 topographic map in desert area based on airborne LiDAR technology:An example for Alxa,Inner Mongolia[J]. Bulletin of Surveying and Mapping, 2019(4):91-95.
National Bureau of Surveying and Mapping Geographic Information. CH/T 1026—2012 technical rules for quality inspection and acceptance of digital elevation model[S]. Beijing: Surveying and Mapping Publishing House, 2012.
General Administration of Quality Supervision,Inspection and Quarantine of the People’s Republic of China,Standardization Administration. GB/T 18316—2008 specifications for inspection and acceptance of quality of digital surveying and mapping achievements[S]. Beijing: Standards Press of China, 2008.
General Administration of Quality Supervision,Inspection and Quarantine of the People’s Republic of China, Standardization Administration. GB/T 24356—2009 specifications for quality inspection and acceptance of surveying and mapping products[S]. Beijing: Standards Press of China, 2009.
National Bureau of Surveying and Mapping Geographic Information. CH/T 8023—2011 specification for data processing of airborne LIDAR[S]. Beijing: Surveying and Mapping Publishing House, 2011: 3-10.
Li J P . Discussion of influence factors in DEM results precision based on LiDAR data[J]. Geomatics and Spatial Information Technology, 2018,41(9):231-233,238.
[13]
姚慧敏 . 基于地形特征建立高质量DEM[D]. 郑州:中国人民解放军信息工程大学, 2002.
Yao H M . Establishment of High Quality DEM Based on Terrain Characteristics[D]. Zhengzhou:Information Engineering University of the Chinese People’s Liberation Army, 2002.