been proposed in recent years as methods to protect the Various digital watermarking techniques have been proposed copyright of multimedia data. There are various waterin recent years as methods to protect the copyright of multimemarking schemes applied to images and several methods dia data. However, as pointed out by Craver et al., the rightful applied to audio and video streams. Among them, a large ownership problem has not been properly solved. Currently, class of the watermarking schemes addresses invisible wathere are two proposals to solve the ownership problem. Unfortermarks. The research and scheme design mainly focus tunately, one proposal lacks a formal proof and the other can on the issues such as perceptual effects-the watermark be easily defeated. In addition, because the purpose of a watershould be invisible and the distortion should be minimized; mark is mainly for protecting the original owner's rights, the robust design-the watermark must be difficult to remove rights of legitimate customers have not been addressed. This and immune to multimedia data operations such as digitalcould eventually defeat the goal of using a watermark to protect to-analog and analog-to-digital conversion, requantization, the owner's copyright. In this paper, we present solutions to both problems: resolution of the rightful ownership problem dithering, resampling, rotation, scaling, cropping. The waand protection of the customer's rights problem. For the rightful termark schemes should also be robust against multipleownership problem, we develop watermarking methods which document attacks.
successfully resolve the ownership of watermarked MPEG However, there are still open problems. One of them, video and/or uncompressed video/image. We introduce specific as pointed out by Craver et al. [13], is how to resolve the requirements in the watermark construction algorithm which rightful ownership of the invisible watermarking schemes. allow us to prove that the proposed schemes are noninvertible; Craver et al. attacked existing watermarking techniques by i.e., the rightful ownership is guaranteed. Furthermore, we deproviding counterfeit watermarking schemes that can be sign customer rights protocols which give legal customers the performed on a watermarked image to allow multiple ability to create their own evidence and prove their legitimate claims of ownerships. We refer to their attacks as the rights to use the watermarked multimedia data. The integration of our watermarking schemes with the customer's rights proto-CMYY attack. The rightful ownership problem is either not cols creates a robust framework toward resolving rightful ownaddressed at all or not addressed properly within current ership and protecting customer's rights.