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Topic: 3D Affine Transform
Replies: 8   Last Post: Feb 28, 2013 9:44 AM

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Posts: 1,717
Registered: 11/8/10
Re: 3D Affine Transform
Posted: Feb 27, 2013 3:48 AM
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"fereshteh " <> wrote in message <kgkcgc$d68$>...
> In a 3D Affine Transform ,I have two sets of 3D data((x,y,z):after applying transformation,(x0,y0,z0):before applying transformation(original data)),and now I want two obtain the 7parameters of 3D Affine Transform(the translation vector,scale factor and the elements of the orthogonal rotation matrix).
> Any suggestion will be very helpful.
> Thanks
> F.A

So what is the final form of affine transfomation you want to allow ?
Usually in 3D, you will have to fit 12 instead of 7 parameters:
x' = a11*x + a12*y + a13*z + a14
y' = a21*x + a22*y + a23*z + a24
z' = a31*x + a32*y + a33*z + a34

Best wishes

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