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

The traditional embedded watermarking scheme achieves copyright protection of images by
embedding watermarks into the original images. This process will deteriorate the original …

Color face recognition has more attention recently since it considered one of the most
popular biometric pattern recognitions. With a considerable development in multimedia …

In the process of network transmission, medical images are maliciously attacked to cause
the loss of diagnostic data or the leakage of patient privacy. To solve this problem, this paper …

As a copyright protection technology, zero-watermarking has received widespread attention
in recent years. The zero-watermarking algorithm based on moments has been extensively …

This paper proposes a new blind, color image watermarking method using fast Walsh–
Hadamard transformation (FWHT) and multi-channel fractional Legendre–Fourier moments …

Orthogonal moments have become a powerful tool for object representation and image
analysis. Radial harmonic Fourier moments (RHFMs) are one of such image descriptors …

In this research, we have developed a new algorithm to compute the moments defined in a
rectangular region. By applying the recurrent formulas, symmetry properties, and particularly …

Biometric applications widely use the face as a component for recognition and automatic
detection. Face rotation is a variable component and makes face detection a complex and …

Color images play an essential role in computer vision systems where colors are useful
information. Extraction of color images features is the backbone of many pattern recognition …