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Cloud/cloud compare - rotation

Posted: Tue May 14, 2013 7:01 am
by ziga8
Hello,

I didn't find any similar question on the forum so I decided to ask it.
I have two clouds (for example two boxes), one is data (or reference) and other on is rotated (for example; 5 deegres around X-axis). The program registrate clouds really well, but is there any kind of chance that program shows rotation of the model (I know that I rotate it fo 5°, so I need a confirmation from the program)?

I hope you understand!
Thank you!

Best regards, Žiga.

Re: Cloud/cloud compare - rotation

Posted: Tue May 14, 2013 7:27 am
by daniel
Apart from the resulting transformation matrix (that appears in the console) you won't get any such information. You could try to transform this matrix in the vector/angle format (if the rotation is really simple, you should get what you are looking for).

Re: Cloud/cloud compare - rotation

Posted: Tue May 14, 2013 7:34 am
by ziga8
Thank you for the fast answer!
I'll figure out something:)

Re: Cloud/cloud compare - rotation

Posted: Fri May 17, 2013 5:59 pm
by ziga8
One more question:)

What's "your" definition of transformation matrix? I can't find it anywhere. Do you have any source link or something?
Thank you!

Best regards, Žiga.

Re: Cloud/cloud compare - rotation

Posted: Wed Jul 10, 2013 7:51 am
by daniel
Oups, I forgot to reply to your last question ;)

For the records, the 'Transformation' matrix is a 4x4 matrix with a rotation matrix included in the 3x3 upper left part and a 3D translation in the upper part of the last column. The bottom right element is always 1 for consistency.

See for instance http://www.fastgraph.com/makegames/3drotation/ (Tr).