Are there any publicly and free (not necessarily open-source) applications that can remove duplicate points from LiDAR clouds?
I would like something on the lines of lasduplicate -unique_xyz, which seems to work fine, but LasTools are no longer free and have certain input limits above which the output is tainted by noise, missing information and it also seems to be incomplete.
Also, I've tried SAGA GIS's "remove duplicate points", but this option is almost impossible to work with for large sets (more than a couple of million and SAGA GIS hangs).
LATER EDIT: a Python script able to filter out such an input is provided in my answer to this question. You should force a garbage collect from time to time if you run into memory problems.
أكثر...
I would like something on the lines of lasduplicate -unique_xyz, which seems to work fine, but LasTools are no longer free and have certain input limits above which the output is tainted by noise, missing information and it also seems to be incomplete.
Also, I've tried SAGA GIS's "remove duplicate points", but this option is almost impossible to work with for large sets (more than a couple of million and SAGA GIS hangs).
LATER EDIT: a Python script able to filter out such an input is provided in my answer to this question. You should force a garbage collect from time to time if you run into memory problems.
أكثر...