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, and shows better imperceptibility. To prove this scheme, we performed several experiments, and compared the experimental results with the related previous works.