Abstract
This paper focuses on modifying the decoder module for an active steganographic scheme to increase the effective data-rate without affecting the embedding module. Three techniques are suggested to improve the error correction framework of an active steganographic scheme. The first involves puncturing where the code-length is increased by adding a suitable number of additional erasures. The second technique involves channel modeling and soft-decision decoding which is adaptive to the embeddable image coefficient. The third method adjusts the erasure threshold depending on the design hiding quantizer so as to achieve a higher data-rate. Combining these techniques, the effective data-rate is increased by 10%-50% for Yet Another Steganographic Scheme (YASS), a popular active steganographic scheme.
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Sarkar, A., Solanki, K., Manjunath, B.S. (2010). Obtaining Higher Rates for Steganographic Schemes While Maintaining the Same Detectability. In: Böhme, R., Fong, P.W.L., Safavi-Naini, R. (eds) Information Hiding. IH 2010. Lecture Notes in Computer Science, vol 6387. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-16435-4_14
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DOI: https://doi.org/10.1007/978-3-642-16435-4_14
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