A Reversible Steganography Suitable for Embedding Small Amounts of Data

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题名:	A Reversible Steganography Suitable for Embedding Small Amounts of Data
作者:	Mao, Qian;Mao, Qian;張真誠;CHang, Chin-Chen;Ch, Ting-Feng;Chung, Ting-Feng
贡献者:	資訊工程學系
关键词:	Histogram modification;reversible;reference table;steganography
日期:	2014-07
上传时间:	2014-06-05 04:15:35 (UTC+0)
摘要:	A reversible information hiding scheme that is suitable for embedding small amounts of data is proposed in this paper. The secret data are transformed to base- k data stream, and each number is embedded into a pixel pair if the pixels’ difference is within a certain range. Referring a pre-determined table, the gray values of the pixel pair are modified so as to carry the secret number. In order to distinguish the secret-carry pairs from no-secret-carry pairs,the differences of the pixel pairs without secret data embedded are expanded by modification of the difference histogram. The proposed information hiding scheme has flexible embedding capacity and low overhead. The peak signal-to-noise ratio (PSNR) is greater than those of existing methods that are based on histogram modification when the embedding capacity is low. Experimental results showed that the proposed scheme provides good embedding performances for small amounts of embedded data.
關聯:	International Journal of Network Security,16(4),295-303.
显示于类别:	[國際企業學系] 期刊論文

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