基于重构等高线的DEM精度评估模型  

Accuracy Evaluation Model of DEM Based on Reconstructed Contours

作　　者：朱长青[1] 王志伟[1] 刘海砚[1] 

机构地区：[1]信息工程大学测绘学院,郑州市陇海中路66号450052

出　　处：《武汉大学学报（信息科学版）》2008年第2期153-156,共4页Geomatics and Information Science of Wuhan University

基　　金：国家973计划资助项目(2006CB701302);国家自然科学基金资助项目(40401052)

摘　　要：利用重构等高线提出了一种评估数字高程模型精度的模型。基于该评估模型,数字高程模型的精度能利用提出的重构误差——等高线的偏移误差面积与原等高线的长度之比来评估。提出的重构误差具有惟一性,较之于常用的中误差具有更好的适宜性和可信度。A new evaluation model for the accuracy of digital elevation model is built based on the reconstructed contours. By the model, the accuracy of digital elevation model can be evaluated by the proposed reconstructed error that is the ratio of the area error between the reconstructed contour and the original contour to the length of original contour. The proposed error is unique. Compared with the root mean square error, the proposed method to evaluate digital elevation model is more reasonable and more reliability.

关 键 词：数字高程模型 精度评估 重构等高线 惟一性 

分 类 号：P231.5[天文地球—摄影测量与遥感]