[Insight-users] how can we calculate the rotation from versor

[Alireza Salamy]

Hi all users,
  I would like to know how can we calculate the rotation from versor?Are the three first parameter in the solution of Itarative closestpoint2,versor?
  the second question is related to 2D/3D point set registration.Can any body tell me in which part of the code of Itarativeclosestpoint2 shall I make some changes to convert it from 3D/3D pointset registration to 2D/3D pointset registration?
  thanks alot,
  Alireza

 
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