Paper Title
Improved Steganoghraphic Technic Based On Pixel Value Differencing For Secured Data Transfer

Abstract— Steganographic Technology is one of the prime information hiding techniques used to enhance the security and retain the privacy of communication in a public channel. Steganography is given paramount importance unlike its other counterparts as it facades the very existence of the information, leaving the hacker scrounges for it. In this paper, we propose a novel Steganographic method for hiding information within the spatial domain of the gray and color image. The proposed approach works by dividing the cover image into blocks of equal sizes and then embeds the secret message by targeting the edges of the image, depending on the differences between the neighboring pixels of the target pixel. The purpose of this work is to generalize the PVD method with two-pixel differencing in relation to their Mean Square Error (MSE) and Peak Signal to Noise Ratio (PSNR). In the PVD method the secret data is inserted into every pixel of the image and the number of insertion bits is determined using the difference value between two adjacent pixels of the target pixel by adopting zig-zag scan instead of raster scan.