3D Watermarking Technology: Visual Quality Aspects

In these last years the applications involving 3D data are quickly increasing in number and many efforts to obtain 3D models by direct acquisition or modeling have been deployed. Additionally, the computer graphics power reached by personal computers and Internet have incremented the diffusion of this new media. For these reasons, the interest in developing techniques to provide IPR protection of 3D models is increasing. Watermarking technology has been successfully used for this purpose for other kinds of media such as images and video, but, a lot of work is again necessary to reach robustness and industrial applicability for 3D watermarking algorithms. In this paper we treat a specific aspect of 3D watermarking technology: the visual quality of the watermarked models. In particular, after a panoramic on 3D watermarking technology we present some ideas about this issue and we propose a method based on multiresolution analysis to improve this aspect in future watermarking algorithms.