Contourlet transform is a very efficient anisotropy analysis tool in high dimensions, which
can not only possess the main features of directionality and anisotropy, but also effectively …

Content-based watermarking techniques have been widely developed to resist geometrical
attacks. In the content-based watermarking scheme, invariant regions detected by an affine …

When embedding the watermark information into DC coefficient of each 8× 8 DCT block of
the host image, it is more likely to obtain a stronger anti-attack function against JPEG …

A blind watermarking algorithm based on DCT for digital image is proposed, in which a 2-bit
image embeds in a 8-bit gray image. Preprocess of image watermark, watermark …

Rapid growth of internet service attains better security of multimedia contents now a days.
Heading this problem a DCT-based color image watermarking framework is proposed in this …

Use of image has been increasing in many applications. With the rapid development of the
network multimedia systems, one can easily duplicate digital image. A digital image …

In this paper, an improved second generation digital image watermarking scheme is
proposed. This scheme exploits the region feature instead of point or line feature. The region …

Watermarking is a basic secure communication method. It is used for embedding a
recognizable pattern in media in such a manner that modification of the media also modifies …

To prevail over the trade-offs among the three major parameters, ie, data transparency,
robustness, and hiding capacity, is an enduring crisis in the domain of digital watermarking …

At present, dealing with the piracy and tampering of images has become a notable
challenge, due to the presence of smart mobile gadgets. In this paper, we propose a novel …