CAJ | 학술논문

数字高程模型是建立三维GIS的主要数据，当前对DEM分辨率的研究缺乏足够的质量评价指标，在大多数GIS分析应用中DEM分辨率的确定存在着随意性与盲目性。本文从数据源着手，分析从无人机影像提取DEM的方法，综合考虑DEM分辨率及数据量，引入设计中误差及地表粗糙度等因子，通过不同比例尺下的无人机影像DEM分辨率的质量对比，选取合适的评价指标，实验证明所选评价指标对DEM分辨率的确定具有一定的可行性和适用性。
수자고정모형시건립삼유GIS적주요수거，당전대DEM분변솔적연구결핍족구적질량평개지표，재대다수GIS분석응용중DEM분변솔적학정존재착수의성여맹목성。본문종수거원착수，분석종무인궤영상제취DEM적방법，종합고필DEM분변솔급수거량，인입설계중오차급지표조조도등인자，통과불동비례척하적무인궤영상DEM분변솔적질량대비，선취합괄적평개지표，실험증명소선평개지표대DEM분변솔적학정구유일정적가행성화괄용성。
DEMs is the main information source for three-dimensional visual model ,The current study of DEM reso-lution is not too much ,and lack of adequate quality evaluation index ,the determination of DEM resolution have random-ness and blindness in Most of GIS application analysis .This paper started from the data source to analyze images form the UAV( Unmanned aerial vehicle ) DEM extraction method ,comprehensive consideration of DEM resolution and data a-mount ,the introduction of MSE ( mean square error ) and surface roughness factor ,and put forward the contrast of different scale UAV image quality evaluation on the DEM resolution ,The experiment proves that the selected evaluation index for the determination of DEM resolution has certain feasibility and applicability .