[ITK Community] [Insight-users] I want to make a registration between two 3D data , Is there some examples ?

[zhq]

Dear all :
         I want to make a rigid registration between 3D data , is there some examples ?
         I have read the codes included in the example/registration , but I have just got a VersorRigid3DTransform , and some affine transform algorithm . And I have some question ?
         1. What does the 'Versor' means ? Just it represent a 3D algorithm ?
 2. I want to make a 3D rigid registration , Can I use the affine algorithm ? If I use the affine algorithm , how can I get the final translation and ratotion ?
         3. The size of the two data isn't the same , how can I deal with it ? And the spcing also isn't the same , how can I deal with it ?
         Thanks in advance !
zhq
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