数字高程模型对DOM纹理几何质量的影响分析  

Analysis of the Influence of Digital Elevation Model on the TextureGeometrical Quality of DOM

作　　者：李淼[1] 田宗彪[1] 章磊[1] LI Miao;TIAN Zongbiao;ZHANG Lei(National Quality Inspection and Testing Center for Surveying and Mapping Products,Beijing 100830,China)

机构地区：[1]国家测绘产品质量检验测试中心,北京100830

出　　处：《测绘与空间地理信息》2020年第7期195-198,共4页Geomatics & Spatial Information Technology

摘　　要：利用数字高程模型实现影像的微分纠正是修正地形投影差的最好方法,这种方法是生产DOM的关键技术,因此,DOM的成图质量与所用DEM的精度具有很大的关系。在国家标准中,对影像纹理质量只有定性的评价方式,而没有定量的评价方式。本文针对航空影像和推扫式卫星影像分别进行实验,采用不同格网点高程和格网尺寸的DEM进行纠正,并对纠正后的DOM纹理几何质量进行定性对比分析,为在DOM生产中合理选择DEM提供依据,为DOM生产和质量评价提供了可靠的参考依据。Using digital elevation model to realize image differential correction is one of the best ways to correct terrain projection displacement.Since this method is the key technology for the production of DOM,the DEM precision has great impact on the quality of DOM.The national standard only has qualitative evaluation approach for image texture quality instead of quantitative evaluation.This paper sets up experiments for aerial images satellite images separately,rectifies images using DEM with different grid elevations and sizes.It qualitatively analyzes the texture geometrical quality of DOM,provides a reference for proper selection of DEM and quality assessment of DOM production.

关 键 词：数字高程模型 微分纠正 投影差 格网 纹理几何质量 

分 类 号：P231[天文地球—摄影测量与遥感]