About point cloud classification's building issue

[yuxiaoz]

Thanks Jianbo,
CSF is a significant program for point cloud bi-classfication, it works well in most of scenes. However, if used in the urban scenes, especially some large buildings on the ground(i.e. factory, gym), the roof maybe classified to ground area. How to solve this problem?

I've changed the class_threshold to 0.1 (set as 0.5 in source code), the smooth_threshold to 0.05 (fixed as 0.3 in source code), the height_threshold to 0.1 (fixed as 9999 in source code).

Sincerely thanks.