[ITK] [ITK-users] Finding Correspondence between Images using itkTransform
Vikash Gupta
vikash.gupta at inria.fr
Mon Apr 7 18:08:14 EDT 2014
Hi everyone,
I have two images one fixed image and one moving image a I registered them and I have the transformation matrix in the ITK Transform format.
I think, now if I take the index [0 0 0] and calculate the physical point associated with the index [0 0 0],i.e., the origin using
moving_image->TransformIndexToPhysicalPoint( index, P0 ).
My assumption is that if to this physical point P0, I apply the calculated transform using
P1= transform->TransformPoint(P0)
and then calculate the index associated with the transformed point P1, in the fixed image like,
fixed_image->TransformPhysicalPointToIndex(P0, new_index)
The new_index should be the origin for the fixed image,i.e., P0 should be the origin of the new image.
But I am not getting the same results.
Am I doing something wrong ?
Thanks for any help
Vikash
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