Open AccessSteganography Using Adaptive Pixel Value Differencing(APVD) of Gray Images Through Exclusion of Overflow/Underflow
Author(s) -
J. K. Mandal
Publication year - 2012
Language(s) - English
Resource type - Conference proceedings
DOI - 10.5121/csit.2012.2211
Subject(s) - arithmetic underflow , steganalysis , steganography , computer science , pixel , information hiding , gray (unit) , artificial intelligence , computer vision , image (mathematics) , operating system , medicine , radiology
In a gray scale image the pixel value ranges from 0 to 255. But when we use pixel-value\uddifferencing (pvd) method as image steganographic scheme, the pixel values in the stego-image\udmay exceed gray scale range. An adaptive steganography based on modified pixel-value\uddifferencing through management of pixel values within the range of gray scale has been\udproposed in this paper. PVD method is used and check whether the pixel value exceeds the\udrange on embedding. Positions where the pixel exceeds boundary has been marked and a\uddelicate handle is used to keep the value within the range. From the experimental it is seen that\udthe results obtained in proposed method provides with identical payload and visual fidelity of\udstego-image compared to the pvd method. \u