Abstract
Several steganographic methods have been proposed based on pixel value differencing (PVD) attempting to increase the embedding capacity without great loss in the perceived image quality. Among these methods is the overlapping pixel-value differencing (OPVD) which can hide more data than the original PVD. However, it still skips huge number of image pixels during the embedding process due to the out-range condition. In addition, it has some security flaws which can be visualized through histogram analysis. In this paper, a high capacity steganographic method is proposed based on the overlapping concept. Unlike OPVD, the proposed method involves a modulus function and a correction procedure to mitigate the out-range condition. The proposed method is evaluated on a number of test images and it is found to yield better results as compared to PVD and OPVD.
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El-Alfy, ES.M., Al-Sadi, A.A. (2012). High-Capacity Image Steganography Based on Overlapped Pixel Differences and Modulus Function. In: Benlamri, R. (eds) Networked Digital Technologies. NDT 2012. Communications in Computer and Information Science, vol 294. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30567-2_20
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DOI: https://doi.org/10.1007/978-3-642-30567-2_20
Publisher Name: Springer, Berlin, Heidelberg
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