This function is used to calculate the deformation field corresponding to a specified linear or nonlinear transformation. The deformation field gives the location in source image space corresponding to the centre of each voxel in target space. It is used as a common form for linear and nonlinear transformations, and allows them to be visualised.
deformationField(transform, jacobian = TRUE)An "internalImage" representing the deformation field. If
requested, the Jacobian map is stored in an attribute, which can be
extracted using the jacobian accessor function.
A transform, possibly obtained from forward
or reverse.
A logical value: if TRUE, a Jacobian determinant map
is also calculated and returned in an attribute.
Jon Clayden <code@clayden.org>
niftyreg.linear, niftyreg.nonlinear