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 …

4,677,466 A 6, 1987 Lert et al. 6,286,036 B1 9, 2001 Rhoads 4,682,370 A 7, 1987 Matthews
6,292,092 B1 9, 2001 Chow et al. 4,697,209 A 9, 1987 Kiewit et al. 6,304,523 B1 10/2001 …

Digital watermarking has been presented in the literature as a technique to protect the
copyright of multimedia data. But most of these literature concentrates on algorithms of …

In this paper, by using multi-level two-dimensional (2D) discrete wavelet transform (DWT),
singular value decomposition (SVD) and chaotic encryption, a new secure watermarking …

Nowadays, a chief problem encountered by content providers and owners is the protection
of their material. They are apprehensive about copyright protection and further forms of …

With the rapid growth of numerous multimedia applications and communications through
Internet, secret image sharing has been becoming a key technology for digital images in …

ABSTRACT A simple and efficient watermark method is proposed in this paper. The
watermark method is an excellent technique to protect the copyright ownership of a digital …

In this Letter, a new digital watermarking algorithm is proposed. Different from most of
existing chaotic watermarking schemes, two chaotic maps are employed in our scheme to …

Digital medical images are very easy to be modified for illegal purposes. For example,
microcalcification in mammography is an important diagnostic clue, and it can be wiped off …

This paper presents a content-based digital image-watermarking scheme, which is robust
against a variety of common image-processing attacks and geometric distortions. The image …