Image steganography is a technique of hiding secret data into a cover image and so as to
prevent the intruders from accessing the secret data. The efficiency of image steganography …

Recently, various efficient reversible data-hiding schemes based on pixel value ordering
have been proposed for embedding messages into high-fidelity images. In these schemes …

Image authentication technique protects the integrity of images. Many image authentication
schemes have been proposed in recent years. However, in these schemes, the image is …

This paper presents a novel medical image authentication system through wavelet
decomposition and particle swarm optimization (PSO). First medical image is treated with …

Pixel value ordering (PVO) and prediction error expansion (PEE) techniques are now being
combined for improved performance in the domain of reversible data hiding (RDH) …

In the transmission of hyperspectral images that have been compressed using absolute
moment block truncation coding (AMBTC), confidentiality and security of crucial information …

Abstract Pixel-value-ordering (PVO) is one of the most popular frameworks in the research of
reversible data hiding (RDH) in recent years. In most PVO-based methods, the cover image …

Abstract Traditional PVO (Pixel Value Ordering) can embed at most two data bits in a row or
column of a smooth image block, which is unable to fulfil current demands. To improve …

In this paper, we proposed a novel method to embed a series of ternary secret data into a
cover image based on an improved Least-Significant-Bit (LSB) scheme using the modulo …

It is often important for reversible data hiding (RDH) to reduce the amount of image
modifications for a given capacity. To this end, recently, a pairwise prediction-error …