Experimental evaluation of ALS point cloud ground extraction tools over different terrain slope and land-cover types

摘要: The article presents an evaluation of different terrain point extraction algorithms for airborne laser scanning (ALS) clouds. research area covers eight test sites with varying densities in the range 3–15 points m−2 and surface topography as well land-cover characteristics. In this article, existing implementations were considered. Approaches that are based on mathematical morphology, progressive densification, robust interpolation, segmentation compared. results described qualitative quantitative analyses. A quantification analyses is presented applied to data sets example. achieved show analysed give classification accuracy depending landscape land cover. Although flat mountainous areas sparse dense vegetation line previous tests, analysis provides overview situations which quanti...