convertAffine           Convert an affine matrix between different
                        storage conventions
decomposeAffine         Decompose an affine matrix into its constituent
                        transformations
niftyreg                Two and three dimensional image registration
readAffine              Read an affine matrix from a file
writeAffine             Write an affine matrix to a file
xformToAffine           Create an affine matrix corresponding to the
                        "xform" of an image
