A WATERMARKING TECHNIQUE FOR DIGITAL IMAGERY: FURTHER STUDIES
Raymond B. Wolfgang, Edward J. Delp · 2001
The growth of networked multimedia systems has created a need for the copyright protection of digital images. Copyright protection involves the authentication of image ownership and the identification of illegal copies of a (possibly forged) image. One approach is to mark an image by adding an invisible structure known as a digital watermark. In this paper we further study techniques for marking images introduced in [1]. In particular, we describe how our techniques withstand random errors. We also provide more details relative to our verification procedure. Finally, we discuss the recently proposed IBM attack.