title: Comments on "A translation- and scale-invariant adaptive wavelet transform".
abstract: Xiong et al. presented a translationand scale-invariant adaptive wavelet transform. We show that their renormalized signal (pre-wavelet transform) is already translation- and scale-invariant. Thus, it is not just invariant under the wavelet transform. We give a necessary and sufficient condition for renormalized signals to be affine transform invariant.
authors.affiliation: Digimarc Corporation, Tualatin, OR 97062, USA. juntian@ieee.org
authors.forename: Jun
authors.initials: J
authors.lastname: Tian