def inverse(self):
        """Take the inverse of the similarity transform.

        Returns
        -------
        :obj:`SimilarityTransform`
            The inverse of this SimilarityTransform.
        """
        inv_rot = np.linalg.inv(self.rotation)
        inv_scale = 1.0 / self.scale
        inv_trans = -inv_scale * inv_rot.dot(self.translation)
        return SimilarityTransform(inv_rot, inv_trans, inv_scale,
                                   from_frame=self._to_frame,
                                   to_frame=self._from_frame)
Take the inverse of the similarity transform.

        Returns
        -------
        :obj:`SimilarityTransform`
            The inverse of this SimilarityTransform.