Image representation is an important topic in computer vision and pattern recognition. It
plays a fundamental role in a range of applications toward understanding visual contents …

COVID-19 is a worldwide epidemic, as announced by the World Health Organization (WHO)
in March 2020. Machine learning (ML) methods can play vital roles in identifying COVID-19 …

With the increasingly widespread use of medical images in medical institutions and
networks, the copyright protection of medical images has become increasingly urgent. Since …

The world is currently under the painful siege of a pandemic occasioned by the infectious
Coronaviruses particularly the severe acute respiratory syndrome coronavirus 2 (SARS-CoV …

Robust watermarking is a valuable methodology used in protecting the copyright and
securing digital images. In this paper, new fractional-order multi-channel orthogonal …

The Internet of Medical Things (IoMT) plays a vital role in healthcare systems to increase
electronic devices' accuracy, reliability, and productivity. This paper presents fast multiple …

Orthogonal moments enable computer-based systems to discriminate between similar
objects. Mathematicians proved that the orthogonal polynomials of fractional-orders …

In this work, a new quaternion-based method for color image watermarking is proposed. In
this method, a novel set of quaternion radial substituted Chebyshev moments (QRSCMs) is …

In this paper, a geometrically invariant color image watermarking method using Quaternion
Legendre-Fourier moments (QLFMs) is presented. A highly accurate, fast and numerically …

Securing medical images are a very essential process in medical image authentication.
Medical image watermarking is a very popular tool to achieve this goal. In this paper, an …