Non-invertible statistical wavelet watermarking

An important distinction among the watermarking schemes is between the techniques using the original image during the mark detection and techniques which do not use it. Most of the techniques presented in literature belongs to the first category. We will show that this fact has important consequences over the possibility to invalidate the claims of ownership, as it intrinsecaliy determines the invertibility of the scheme hence allowing the creation of fake originals. Then we will propose a novel non-invertible wavelet watermarking approach. Our watermark philosophy follows the guidelines described in [1] enriching the wavelet scheme we presented in [2] with the non-invertibility property.