Digital image authentication is an extremely significant concern for the digital revolution, as it
is easy to tamper with any image. In the last few decades, it has been an urgent concern for …

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 …

Image watermarking is an effective and promising technology. Robust watermarks, resistant
to various attacks, allow authors and owners of digital images to protect their rights to digital …

In this paper, a robust watermarking scheme based on orthogonal Fourier–Mellin moments
and chaotic map is introduced, which achieves copyright authentication for double images …

This paper suggests a sparse watermark image embedding scheme on the singular values
of the pre-selected wavelet sub-band coefficients of the digital images. Dictionary learning …

With the development of image processing technology, the copyright protection of digital
images has become an urgent problem to be solved. As an effective method, the robust …

This paper introduces a novel robust watermarking scheme for copyright protection of color
image based on quaternion-type moment invariants and visual cryptography. As a secure …

Medical images are fundamentally utilized for rendering diagnostic and treatment to
patients. Medical images are a patient body or part captured using medical imaging devices …

Digital data communication or sharing has increased day by data because of excessive
usage of the Internet. It is necessary to protect digital data from unauthorized access …

Interpolation based reversible data hiding (IRDH) schemes have recently been studied for
better rate-distortion performance. However, most of them do not have any consideration of …