Point cloud filtering is an important step in Digital Terrain Model (DTM) production. Despite the fact that a great body of research has been conducted this area so far, there are still some problems have not yet solved, especially complex terrains. The use user-defined parameters within presented point methods, and difficulty parameter estimation parallel to increase topography slope above-gro...

Abstract While a popular representation of 3D data, point clouds may contain noise and need filtering before use. Existing cloud methods either cannot preserve sharp features or result in uneven distributions the filtered output. To address this problem, paper introduces method that considers both distribution feature preservation during filtering. The key idea is to incorporate repulsion term ...