[Insight-users] Initializing a BSplineTransform in ITK 4.4
Frank Preiswerk
frank.preiswerk at unibas.ch
Mon Jul 29 04:49:34 EDT 2013
Hi all,
I'm writing a program that performs image registration by first computing an
affine transformation followed by a bspline deformation. The bspline
registration should be initialized with the output of the affine
registration.
I'm using ITK 4.4. The example DeformableRegistration15.cxx intends to do
the above but it seems that the BSplineTransform is actually not initialized
with the output of the affine step, as already reported earlier:
http://www.itk.org/pipermail/insight-users/2012-May/044623.html
ITK 3's BSplineDeformableTransform had a method SetBulkTransform to concat
the bspline transform with another transform, but in ITK 4's
BSplineTransform this method was removed. So the question remains how to
properly initialize a BSplineTransform with an affine (or any other)
registration output.
Computing the parameters of the bspline transform by applying the affine
transform to the grid nodes is an option. But something like
SetBulkTransform would be much more convenient.
I'm thankful for any hints.
Regards,
Frank
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