Digital Image Watermarking: Issues in Resolving Rightful Ownership - Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on

In recent literature many strategies for attacking and subverting a watermark have been presented. Such attacks suggest t ha t the ability t o embed non-erasable watermarks does not necessarily imply tha t the watermarking scheme can be used t o establish ownership. The main aim of this paper is t o formulate necessary and sufzcient requirements for a watermarking scheme t o be able t o resolve rightful ownership. I t is shown tha t some of the popular schemes proposed in literature for watermarking images do not satisfy these requirements. Finally, we show tha t a modification of a watermarking scheme in literature [l] performs satisfactorily.