...采样点密度; 数据转换; 构网建模 ［文献标识码］ A [gap=440]Key words: digital terrain model; data capture; sampling point location; sampling point density; data transition; constructing network and model ..
This paperproposesan approach to select thedynamicalneighborhood for each point while constructing the tangent subspace based on the sampling density and manifold curvature.