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Digital Image Steganography Using LSB Substitution, PVD, and EMD

Author

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  • Anita Pradhan
  • K. Raja Sekhar
  • Gandharba Swain

Abstract

To protect from pixel difference histogram (PDH) analysis and RS analysis, two hybrid image steganography techniques by appropriate combination of LSB substitution, pixel value differencing (PVD), and exploiting modification directions (EMD) have been proposed in this paper. The cover image is traversed in raster scan order and partitioned into blocks. The first technique operates on 2 × 2 pixel blocks and the second technique operates on 3 × 3 pixel blocks. For each block, the average pixel value difference, , is calculated. If value is greater than 15, the block is in an edge area, so a combination of LSB substitution and PVD is applied. If value is less than or equal to 15, the block is in a smooth area, so a combination of LSB substitution and EMD is applied. Each of these two techniques exists in two variants (Type 1 and Type 2) with respect to two different range tables. The hiding capacities and PSNR of both the techniques are found to be improved. The results from experiments prove that PDH analysis and RS analysis cannot detect these proposed techniques.

Suggested Citation

  • Anita Pradhan & K. Raja Sekhar & Gandharba Swain, 2018. "Digital Image Steganography Using LSB Substitution, PVD, and EMD," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-11, September.
    • Handle: RePEc:hin:jnlmpe:1804953
    DOI: 10.1155/2018/1804953
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    Cited by:

    1. Faruk Selimović & Predrag Stanimirović & Muzafer Saračević & Predrag Krtolica, 2021. "Application of Delaunay Triangulation and Catalan Objects in Steganography," Mathematics, MDPI, vol. 9(11), pages 1-15, May.

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