This paper proposes a new adaptive watermarking scheme for digital images, which has the
properties of blind extraction, invisibility, and robustness against attacks. The typical scheme …

Digital watermarking technology is of great importance to protect the copyright of the owners
and authenticate the security of the media. As digital images are vulnerable to some …

Now days, the protection of digital data in multimedia communication, in the form of image,
text, video and audio has become an important problem because it can be copied and …

The free-view image could suffer from a viewpoint change attack, although it may be not
malicious. This paper focuses not only on this viewpoint change attack, but also on the other …

Digital watermarking technology is an effective method for copyright protection of digital
information, such as images, documents, etc. In this paper, we propose a high capacity text …

In this paper a novel image based data security and authentication based, image
watermarking scheme that combines the discrete wavelet transform (DWT) and Singular …

The image authentication plays a vital role in modern multimedia technology. The existing
technique for preserving authentication abided the content only by preserving …

The main problem in using various watermarking methods to secure digital images is how to
optimize the trade-off between robustness watermarked image against the effect of distortion …

In recent years chaos has received a great deal of attention from the researches specialized
in communications, signal and image processing. The complexity property of the chaotic …

This paper proposes an algorithm to perform robust digital watermarking through image
scrambling and singular value decomposition (SVD). Both the watermark and the carrier are …