Build a color map of a measured part in comparison with another measured part pattern but not with CAD

Elena Brello 4 years ago in Metrology Software / PC-DMIS updated by Jörgen Andersson (vpt se) 4 years ago 1

It would be great to be able to build a color map of a measured part based on its comparison with another patter-part and no with its CAD.

This option would be very usefull, for example, in the case where we have 2 parts: at first sight both of the parts have the same dimensions because the results of the measurements of both parts with caliper are similar and both parts are on tolerance with the CAD/drawing, but only one of them could be assembled. So, it would have sense that the difference between them must be on the shape, and the mentioned option would be the best chance to be able to see it.

Assuming you have a point cloud, I think this could do it:

Mesh the cloud (with the mesh option in PC-DMIS or using 3rd party software)

of the part that you want to have as master (or "CAD").

Export the mesh as .STL from PC-DMIS. This will be your "CAD" model.

Whenever you want to compare a point cloud with this part, import both

the .STL and the cloud and do a color map.