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Maximizing Steganographic Embedding Efficiency by Combining Hamming Codes and Wet Paper Codes

机译:通过结合汉明码和湿纸质码来最大化隐写嵌入效率

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For good security and large pay load in steganography, it is desired to embed as many messages as possible per change of the cover-object, i.e., to have high embedding efficiency. Steganographic codes derived from covering codes can improve embedding efficiency. In this paper, we propose a new method to construct stego-codes, showing that not just one but a family of stego-codes can be generated from one covering code by combining Hamming codes and wet paper codes. This method can enormously expand the set of embedding schemes as applied in steganography. Performances of stego-code families of structured codes and random codes are analyzed. By using the stego-code families of LDGM codes, we obtain a family of near optimal embedding schemes for binary steganography and ±1 steganography, respectively, which can approach the upper bound of embedding efficiency for various chosen embedding rate.
机译:为了获得良好的安全性和隐写术中较大的负担,期望每次覆盖对象的改变嵌入尽可能多的消息,即具有高的嵌入效率。从覆盖码派生的隐秘码可以提高嵌入效率。在本文中,我们提出了一种构造隐身代码的新方法,该方法表明通过组合汉明码和湿纸代码,不仅可以从一个覆盖代码中生成一个隐身代码系列,而且还可以生成一系列隐身代码。这种方法可以极大地扩展隐写术中应用的嵌入方案集。分析了结构代码和随机代码的隐秘代码系列的性能。通过使用LDGM码的隐码系列,我们分别获得了针对二进制隐写术和±1隐写术的近乎最佳的嵌入方案,它们可以接近各种选择的嵌入率下的嵌入效率上限。

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