多分辨率DEM的插值残差计算及精度评价模型

Residual analysis of DEM with different resolutions and precision evaluation model

根据某工程已知的测量点数据,按照不同分辨率利用不同的插值方法生成一系列的格网结构的数字高程模型(DEM)。然后对每个数字高程模型的精度用残差计算的方法进行评价,并用回归分析的方法得到精度评估模型,有一定的应用价值。

A series of grid digital elevation models （DEM） with different resolutions are generated by various interpolation methods based on measured data of a surveying project. Then the precision of ever）T DEM is evaluated by residual analysis method. The regression analysis method is adopted to construct precision evaluation model. It is worth to be used in engineering.