[Insight-users] All zeros displacement field when using DeformableRegistration1

[Barbara Garita]

Hello All:

I will like some advice concerning two issues about non-rigid registration:
1) I am using DeformableRegistration to register two 3D images (data sets of human vertebrae). After I made the necessary accommodation for 3D to the parameterlist and the code, I ran the DeformableRegistration1, I checked for the correctness of the vectordeformationfield scalar components  by extracting them and analyzing their values.  However, when I use the Warperfilter and the vectordeformationfield to get back to a scalar image I get a image of the right size but it is all zeros.  

2) I am trying to non-rigidly register two image data set of human vertebrae (I am interested in having a displacement field that gives me correspondence between the surfaces (edges, contours...) of both vertebrae, I am not really interested in the information inside the vertebrae--), should I use another filter, like affine or B spline....

Thanks for you advice, Barbara
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