I am testing Pix4D for some time now and the software is brilliant.
I have a contract with BIM company, to scan the roofs of the structures they are scanning with LIDAR, as it is hard for them to do this using laser scanner.
My problem is that when it comes to scan roofs covered with black bitumic insulation Pix leaves me point cloud with areas where there is no information, and i bellieve its because thisis low feature surface.
Correct me if im wrong…
Previously i used Photoscan and had better results, but decided to swith to P4D because its more robust and less resource consuming.
The best results as for now i achieved with settings as follow:
Initial Processing: Image size 1, Calibration Standard, Aerial grid
Densification: Image size 1, Optimal density, NoM 2, Multiscale No
Above this i get alot of noise on the edges of HVAC infrastructure located on the roof,
Thanks in advance