文章基本信息

标题：A New Way to Implement Stegnography by Minimizing Distortion
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作者：K.Kiran Kumar ; Y.Prabhu Suresh Babu ; A.Sudhir 等
期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2012
卷号：1
期号：7
页码：33-36
出版社：Shri Pannalal Research Institute of Technolgy
摘要：In this paper we are going to learn about the minimization of distortion in steganography. For this purpose we use a general nonbinary embedding operation and discuss various system requirements. We assume every possible value of stego element by assigning a scalar which expresses the distortion of a embedding change done by replacing the cover element by this value. The total distortion is assumed to be a sum of per-element distortions. Both the payload- limited sender (minimizing the total distortion while embedding a fixed payload) and the distortion-limited sender (maximizing the payload while introducing a fixed total distortion) are considered. Nonbinary case is decomposed into several binary cases by replacing individual bits in cover elements, but there is no loss of performance. Using a novel syndrome-coding scheme, the binary case is approached and these are based on dual convolution codes equipped with the Viterbi algorithm. This fast and very versatile solution achieves state-of-the-art results in steganographic applications while having linear time and space complexity with respect to the number of cover elements. Practical merit of this approach is validated by constructing and testing adaptive embedding schemes for digital images. In this paper what we've obtained is to implement steganography by using general non-binary embedding operation. This gives the new technique to implement steganography effectively and easily.