> counted my house as a tree Even the more sophisticated algorithms pretty much always do this ;-) You are probably not interested in taking this further, but

> counted my house as a tree Even the more sophisticated algorithms pretty much always do this ;-) You are probably not interested in taking this further, but you could give the Li tree filter a try: https://pdal.org/en/stable/stages/filters.litree.html https://pdal.org/en/stable/stages/filters.litree.html But getting perfect segmentation is basically impossible.