In this work, we propose a new substitution scheme for color images watermarking based on
the Fourier transform. This scheme will be declined into two variants in which the image will …

In this paper, a novel spatial domain color image watermarking technique is proposed to
rapidly and effectively protect the copyright of the color image. First, the direct current (DC) …

Imperceptibility, robustness, security and capacity are the main features of a digital image-
watermarking scheme, and their simultaneous acquisition is a challenging problem. In the …

As a typical frequency-domain analysis method, quaternion discrete Fourier transform
(QDFT) has been widely used in information hiding in color images. However, due to the …

Image watermarking prevents copyright infringements by attaching visible/invisible
watermark images as authentication identities in the owner's documents. The article made …

Hematology tests are examinations that aim to know the state of blood and its components,
one of which is leukocytes. Hematologic examinations such as the number and morphology …

Secure digital image communications on the internet and via networked systems is
important in many multimedia commercial, government, and defense applications. Cyber …

Digital watermarking provides copyright protection and proof of ownership by inserting
watermark metadata as owner's identity in digital documents to prevent authenticity and …

The need to transmit or exchange digital images over the internet has drastically increased
over the past few years. One of the major drawbacks of using the internet is the elevated risk …

The copyright laws are not sufficient to protect the multimedia data against illegal recording
and transmission. Discrete Cosine Transform (DCT) image watermarking technique is used …