In this paper a Genetic Algorithm based steganographic technique in frequency domain
using discrete cosine transform has been proposed. A 2× 2 sub mask of the source image is …

Presently, the evolution massive of the internet gives more attention, play important role in
the field of communication, and transfer messages. Nowadays, hiding sensitive or secret …

Steganography is a very useful technique which aims at preventing loss of privacy during
the process of data communication, especially over the internet. It can involve different forms …

A new and efficient steganographic method for embedding secret messages into a gray-
valued cover image is proposed. In the process of embedding a secret message, a cover …

The crucial challenge that decides the success of any steganographic algorithm lies in
simultaneously achieving the three contradicting objectives namely—higher payload …

This paper proposes two steganography techniques,(i) quotient value differencing (QVD),
and (ii) pixel value differencing with modulus function (MFPVD). The QVD technique …

In this paper, QR bar code and image processing techniques are used to construct a nested
steganography scheme. There are two types of secret data (lossless and lossy) embedded …

This article proposes a very high capacity steganography technique using differencing and
substitution mechanisms. It divides the image into non-overlapped 3 * 3 3× 3 pixel blocks …

It is conventionally assumed that steganographic schemes for gray-scale images can be
directly applied to color images by embedding messages independently in different color …

In this paper, A new image steganography scheme is proposed which is a kind of spatial
domain technique. In order to hide secret data in cover-image, the first component alteration …