A new image steganography based on 2k correction and edge-detection

In this paper we propose a new image steganography scheme which is a kind of spatial domain technique. In order to hide secret data in cover-image, we use the just noticeable difference (JND) technique and method of contrast sensitivity function (CSF). This is an edge-detection which uses part information of each pixel-value. In order to have better imperceptibility, we propose a mathematical method which is the 2(k) correction. Proposed scheme can embed more data than previous schemes [6, 5, 13], and shows better imperceptibility. To prove this scheme, we performed several experiments, and compared the experimental results with the related previous works.