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How to force an alignment between the cad model and the scanned workpiece?

Mik95
Hi to every one,

I'm stuck with this problem: once I scan my workpiece I want to align the cad model so that a particular surface must be perfectly matched. In this way when I apply the colormap, that surface must be zeroed, therefore green.

I'm not able to do that, I only perform an automatic alignment (or taking manually the points) but the program seems to do the best fit without considering my needs. I tried to solve it by moving the CAD origins and aligning the axis along that surface but I didn't obtain any hoped result.

Thanks in advance for any help!

(Program PC-DMIS CAD++)
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  • How? When I click on the alignment button it appears this window (see the attachment)... I can't select any created plane but I can only click on the automatic button or I can take manually the points on the CAD model and the scanned piece.
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  • in reply to Mik95
    Actually, the desired alignment is between the CAD model and a point cloud. The workpiece is a scan obtained by the arm scanner. By doing the alignment through the "new alignment" it doesn't work. It changes only the position and orientation of the origin on the CAD model but not how the CAD and the cloud point match each other.
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  • in reply to Mik95
    Actually, the desired alignment is between the CAD model and a point cloud. The workpiece is a scan obtained by the arm scanner. By doing the alignment through the "new alignment" it doesn't work. It changes only the position and orientation of the origin on the CAD model but not how the CAD and the cloud point match each other.
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