Convert CMTK registration to homogeneous affine matrix with dof2mat
cmtk.dof2mat(reg, Transpose = TRUE, version = FALSE)
Path to input registration file or 5x3 matrix of CMTK parameters.
output matrix so that form on disk matches R's convention.
Whether to return CMTK version string
4x4 transformation matrix
Transpose is true by default since this results in the orientation of cmtk output files matching the orientation in R. Do not change this unless you're sure you know what you're doing!