DEM误差可视化方法分析与研究

Analyse and study of visualization method on DEM errors

可视化技术为DEM误差的分析处理提供了有效的手段。目前,DEM误差可视化的方法主要有误差地图法、等高线套合法、二维图表法及多维可视化法等。面对DEM误差的多源性,如何合理的区分和使用可视化方法成为一个亟待解决的问题。因此,本文研究了当前主要DEM误差可视化技术的发展与应用,并在圆形平行坐标系方法基础上融合DEM误差,提出了一种处理多因子误差关系的可视化方法,为今后的DEM误差可视化研究提供参考和借鉴。

The visualization technology offers an effective means to research the errors of DEM.At present,the methods of DEM error visualizations include error map methods,contour registration methods,two dimension graph methods and multi-dimensional visualization methods etc.Due to the multi-source of the DEM error,it is an emergent problem that how to differentiate and use visualization methods correctly.Thus,this paper researched on the development and applications of the key technology of DEM error visualization,and based on the Circular Parallel Coordinates methods it merged the DEM error.It brought forward a visualization method to deal with the multi-factor error relations,which could offer a reference for further researching DEM error.