Implementation and Comparison of Some Steganography Method for Digital Images

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Chaboki, Behrang | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39540 (02)
University: Sharif University of Technology
Department: Mathematical Sciences
Advisor(s): Mahdavi Amiri, Nezameddin
Abstract:
In the modern world, steganography is an image processing technique, revealing to be a suitable process for information hiding. In most cases, steganography has shown to be more effective than cryptography techniques. Recently, there have been attempts to improve the stego-image quality and hiding capacity by introducing new methods. Here, we inspect the advantages and disadvantages of some new steganography methods for digital images. The implemented methods are color and grayscale image steganography with OPVSP algorithm, BRL and GRL methods, and the simple LSB method with OPAP algorithm. Here, we compare the implementation results of these methods using MATLAB 7.4.0, with other common steganography methods, such as “side-match”, “least significant bit substitution” and “differencing”.
Keywords:
Image Processing ; Matlab Software ; Steganography ; OPVSP Algorithm ; CRL Algorithm ; BRL Algorithm ; Optimal Pixel Adjustment Process (OPAP)Algorithm