In recent decades, we have witnessed the evolution of information technologies from the
development of VLSI technologies, to communication and networking infrastructure, to the …

The growth of high speed computer networks and that of Internet, in particular, has explored
means of new business, scientific, entertainment, and social opportunities. Ironically, the …

Digital audio, video, images, and documents are flying through cyberspace to their
respective owners. Unfortunately, along the way, individuals may choose to intervene and …

A new and efficient steganographic method for embedding secret messages into a gray-
valued cover image is proposed. In the process of embedding a secret message, a cover …

This paper presents a chaotic encryption-based blind digital image watermarking technique
applicable to both grayscale and color images. Discrete cosine transform (DCT) is used …

Digital watermarking of multimedia content has become a very active research area over the
last several years. A general framework for watermark embedding and detection/decoding is …

Many electronic watermarks for still images and video content are sensitive to geometric
distortions. For example, simple rotation, scaling, and/or translation (RST) of an image can …

The growth of new imaging technologies has created a need for techniques that can be
used for copyright protection of digital images and video. One approach for copyright …

We propose a novel multipurpose watermarking scheme, in which robust and fragile
watermarks are simultaneously embedded, for copyright protection and content …

The growth of the Internet has fueled the demand for enhanced watermarking and data
hiding technologies and has stimulated research into new ways to implement watermarking …