Any significance to dot colors in sparse and dense clouds

[vmishka]

Is there any significance to the colors of the dots in the sparse and dense clouds? There are a variety of colors.

For example, I am modelling a white stuffed polar bear. I get black dots on the surface in the clouds. Are some of the black dots "real" or are they all artifacts that I can try to remove before proceeding with the mesh?

[Vlad]

Because Photoscan still use algorithms from early photogrammetry days (that probably as old as mammoth ***t). All Cloud dots are "real" for Photoscan, but depend on mesh generation resolution settings, alone dots or dots islands can be ignored. So you SHOULD remove all garbage from dense cloud before generate mesh.

You can read about poison mesh generation or other technics for understand how this work. Photoscan just use such mesh generation create raw mesh about 1.5~2x more poly than target count and later just decimate for your target poly count.