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Lossless Data Hiding for JPEG Pictures

机译：JPEG图片的无损数据隐藏

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摘要

In this article, the authors propose a novel interpolation based reversible data hiding algorithm for use with images that are encoded in the Joint Photographic Expert Group standard format. This algorithm is able to exactly recover the original coded quality of the image, once the hidden message has been extracted. The pro posed algorithm embeds message data into discrete cosine trans form blocks by calculating the difference values between the nonzero quantized AC coefficients and their interpolated counterparts and then shifting the histogram of those difference values. Simple linear interpolation is employed to exploit the correlation between the AC coefficients that are colocated across neighboring blocks for the pur pose of creating hiding capacity for the insertion of data bits into the AC coefficients. The embedding of data is performed via the shifting of the histogram of interpolation differences. Our experimental results demonstrate that the proposed method not only provides an increased embedding capacity but also maintains a high image qual ity. Moreover, as an additional processing delay is not introduced and only simple arithmetic computations are involved, the proposed algo rithm can operate in real time. ©2011 Society for Imaging Science and Technology.
机译：在本文中，作者提出了一种新颖的基于插值的可逆数据隐藏算法，用于以联合图像专家组标准格式编码的图像。一旦隐藏消息被提取，该算法就能够准确地恢复图像的原始编码质量。所提出的算法通过计算非零量化AC系数与其内插的对应系数之间的差值，然后移动这些差值的直方图，将消息数据嵌入到离散余弦变换块中。采用简单的线性内插来利用在相邻块之间共置的AC系数之间的相关性，其目的是为将数据位插入AC系数中创建隐藏容量。数据的嵌入是通过插值差异直方图的移动来执行的。我们的实验结果表明，提出的方法不仅提供了更高的嵌入能力，而且还保持了很高的图像质量。此外，由于没有引入额外的处理延迟，并且仅涉及简单的算术计算，因此所提出的算法可以实时运行。 ©2011影像科学技术协会。

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  • 来源
    《Journal of Imaging Science and Technology》 |2011年第5期|p.050502.1-050502.15|共15页
  • 作者

    Yih-Chuan Lin; Tzung-Shian Li;

  • 作者单位

    Department of Computer Science and Information Engineering, National Formosa University, Yunlin, Taiwan;

    Department of Computer Science and Information Engineering, National Formosa University, Yunlin, Taiwan;

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