DEM精度评价模型研究

Researches on DEM Accuracy Model

数字高程模型精度评价通常采用抽样方法,具有随机性及不定性。采用基于Strahler积分的改进型DEM精度评估模型以及经典方法等高线重构,通过定量化评估指标对3种经典内插方法生成的DEM数据进行整体精度比较和评价,克服了传统抽样评价方法的随机性及不定性缺陷。

Evaluating Digital Elevation Model accuracy use selective examination usually, which has randomicity and ambiquity. Using an ameliorated DEM accuracy model based on Strahler integral as well as classical contour rebuilding. method, the whole accuracy of DEM created by three interpolate techniques is quantified to conquer the limitation traditional selective examination.