PVD Steganography Based on Correlation and Maximum Pixel Value Difference

PVD Steganography Based on Correlation and Maximum Pixel Value Difference

DOI: 10.4018/978-1-5225-7516-0.ch004

Abstract

In this chapter, the author describes the pixel value correlation-based steganography techniques and maximum pixel value difference-based steganography techniques. The pixel value-based correlation steganography techniques utilize the relationship among the pixel values of a block, whereas the maximum pixel value difference steganography techniques utilize the largest pixel value difference among different pairs of pixels in the block. Although the PSNR values of these techniques are better as compared to the traditional PVD schemes, the hiding capacity is not improved.
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Pvd Steganography Based On Correlation

The PVD technique proposed by Chang & Tseng (2012) exploits the correlation of a target pixel with its neighboring pixels. Although they addressed the fall off boundary problem, but another problem, known as fall in error problem has occurred, which was explained in (Swain & Lenka, 2013). This section describes all the seven variants of PVD based on correlation of target pixel with neighboring pixels (Swain & Lenka, 2013; Swain & Lenka, 2015).

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