How to calculate Jacobian matrix at each pixel with simpleITK after I have estimated a B-spline transformation between fixed_image and moving_image?
Do I need to convert the transformation into displacement field to compute the Jacobian matrix? Many thanks.
The only functionality provided by SimpleITK with respect to Jacobians is to compute the determinant of a deformation field. To do that, first get a deformation field representation of your transformation via the TransformToDisplacementFieldFilter and then run the DisplacementFieldJacobianDeterminantFilter filter.