利用DEM制作数字正射影像(DOM)精度分析

Accuracy Analysis of Digital Orthophoto (DOM) Made by DEM

传统的数字正射影像(DOM)是在数字高程模型(DEM)基础上进行生产的,DOM制作中其数字微分纠正通常要用到DEM实现地形的纠正,DEM的精度会在一定程度上影响DOM精度和效果。随着无人机摄影测量技术的快速发展和DEM成果逐渐丰富,本文探讨并验证了利用不同精度DEM成果制作DOM成果的不同效果,为DOM制作中合理有效选择数据源提供了帮助。

The traditional digital orthophoto (DOM) is produced on the basis of the digital elevation model (DEM). In the production of DOM, digital differential correction usually requires the use of DEM to achieve terrain correction, and the accuracy of DEM will to some extent affect the accuracy of DOM. With the rapid development of UAV photogrammetric technology and the gradual enrichment of DEM achievements, this paper discusses and verifies the impact of using different precision DEM achievements on DOM achievements, providing assistance for selecting data sources reasonably and effectively in DOM production.