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- W88717382 abstract "This paper proposes a 2-tier data hiding technique that involves Exploiting Modification Direction (EMD) method and Huffman Coding. Firstly, a secret message of an arbitrary plain text is encrypted, compressed and transformed into a stream of bits. Subsequently, the bits are converted into secret digits by using the Huffman dictionary table. Secondly, a cover image is segmented into groups of n pixels and each group is embedded with one secret digit by modifying one gray-scale value at most to hide the secret digit in (2n+1)-ary notational system. The experimental results have shown that both PSNR and payload of the proposed method are higher than that of well-known methods namely, OPAP, EMD and Opt EMD." @default.
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- W88717382 date "2011-01-01" @default.
- W88717382 modified "2023-09-23" @default.
- W88717382 title "A 2-tier Data Hiding Technique Using Exploiting Modification Direction Method and Huffman Coding" @default.
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