Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 16, Pages: 1-7
Tanmoy Halder1*, Sunil Karforma2 and Rupali Mandal3
1 Department of Computer Application, Dr. B.C. Roy Engineering College, Durgapur - 713206, West Bengal, India; [email protected]
2 Department of Computer Science, The University of Burdwan, Burdwan - 713104, West Bengal, India; [email protected]
3 Department of Computer Application, Bengal College of Engineering and Technology, Durgapur - 713212, West Bengal, India; [email protected]
In this paper, we have proposed a new data hiding approach using Pixel Value Difference (PVD) seganography for digital image. PVD steganography, proposed by Wu and Tsai, use non-overlapping block of two pixels to find the edge areas to hide secret message by adjusting the pixel pairs. In PVD method only the edge between two pixels within a block is detected. In order to find out more edges and to increase the capacity of PVD method we have used non-overlapping blocks of three pixels and an optimal adjustment process. The proposed method compared with different PVD approaches with respect to capacity and PSNR. This novel method could be applied to hide E-Governance related data for secure transfer.
Keywords: E-Governance, Optimal-Adjustment, Pixel-Value-Difference, Steganography
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