Calibrate a Cloud

[candisCAD]

Hello, I'm very new in 3D scanning. :)

I've scanned a geometry with the Artec MHT Scanner and exported the mesh into Cloudcompare in order to calibrate the 3D Model. (I couldn't find how to export direktly a Cloud with colour Information).

I've placed different ground control points in the 3D Model where I know the Coordinates in x,y,z and so I want to use the aling funktion calibrating my 3D model to the exact coordinates.

Cloud Compare takes the Cloud as a solid cloud, so the passingpoints are nearly at the right place but not exactly. Is there a funktion to handle the Cloud more liquid, slightly deform it, so it fits correclty to my reference points?

Vielen herzlichen Dank!
Kindly regards

Michael

[daniel]

Nope, you can tell CC to change the scale but the registration is always 'rigid'.

[candisCAD]

Hello Daniel,
thank you for your quick answer. Do you know another program that can handle my problems?

Regards,
Michael

[daniel]

Well, non-rigid registration algorithms do exist (there's even a plugin in CC to do this) but you need to provide another cloud/mesh as reference (and not single references). Moreover they can't be used on a lot of points.

Otherwise I don't know any software that would let you do what you are trying to achieve.

[candisCAD]

Hello daniel,
whats the name of this plugin? Maybe I could try to find a solution.

Thanks a lot.

Michael

[daniel]

It's qGMMReg (qGMMRegPlugin - available in the latest version only). It hasn't any wiki page yet but it is based on the work by Jian and Vemuri:
https://code.google.com/p/gmmreg/

Don't expect to make it work on more than 5.000 or 10.000 points...