Visually meaningful image encryption may keep the data security and appearance security
of the digital images. However, there are still security and efficiency shortcomings existing in …

In this paper, a novel robust color image watermarking method based on Discrete Cosine
Transform (DCT) and Discrete Wavelet Transform (DWT) is proposed. In this method, RGB …

The proportion of multimedia traffic in data networks has grown substantially as a result of
advancements in IT. As a result, it's become necessary to address the following challenges …

With the increasing requirements of the performance in secure communication filed based
on chaos, chaotic systems have been gradually developed into higher dimensions. Because …

In order to ensure reliable and secure image exchange, chaotic systems are often
considered for their good performance in information security. In this work, we first propose …

Increasing the security of data in insecure communication networks is the motivation of
researchers to propose different types of methods. Steganography is one of the security …

Robust zero-watermarking is an effective and distortion-free technique for copyright
protection and has become a research hotspot in the field of digital watermarking. In the face …

Image watermarking technique aims at high imperceptibility of the embedded watermark
with minimal distortion in the watermarked images. In frequency-domain, block-based …

In this study, a QR-based digital watermarking scheme that can use color images is
proposed. The main purpose of this method is to enhance robustness against crop** …

Data hiding in encrypted images (DHEI) embeds data in the cipher state, which not only
protects the confidentiality of the cover image content, but also hides the existence of the …