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Improved reversible data hiding based on PVO and adaptive pairwise embedding

机译:基于PVO和自适应成对嵌入的改进的可逆数据隐藏

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摘要

Pixel-value-ordering (PVO) is an efficient technique of reversible data hiding (RDH). By PVO, the cover image is first divided into non-overlapping blocks with equal size. Then, the pixel values in each block are sorted in ascending order. Next, take the second largest/samllest pixel value as a prediction of the largest/samllest pixel value to derive two prediction errors. Finally, the data embedding is constructed by modifying the generated prediction errors of each block. After data embedding, the PVO of each block is unchanged, which guarantees the reversibility. Our key observation is that, in each block, the modification for the two prediction errors is independent without exploiting the correlation between them, although they are closely correlated with each other. In light of this, an improved PVO-based RDH method is proposed in this work. The two prediction errors of each block are considered as a pair, and the pairs are modified for data embedding based on adaptive two-dimensional histogram modification. The proposed method is experimentally verified better than the original PVO-based method and some of its improvements.
机译:像素值订购(PVO)是可逆数据隐藏(RDH)的有效技术。通过PVO,首先将覆盖图像分成具有相同尺寸的非重叠块。然后,每个块中的像素值按升序排序。接下来,将第二大/三星最像素值作为最大/三组像素值的预测来导出两个预测错误。最后,通过修改每个块的生成的预测误差来构建数据嵌入。在数据嵌入后,每个块的PVO不变,保证可逆性。我们的关键观察是,在每个块中,两个预测误差的修改是独立的,而不是利用它们之间的相关性,尽管它们彼此密切相关。鉴于此,在该工作中提出了一种改进的基于PVO的RDH方法。每个块的两个预测误差被认为是一对,并且对基于自适应二维直方图修改的数据嵌入进行修改。所提出的方法是经过实验验证的,优于原始的PVO的方法和其一些改进。

著录项

  • 来源
    《Journal of Real-Time Image Processing》 |2019年第3期|685-695|共11页
  • 作者单位

    Beijing Jiaotong Univ Inst Informat Sci Beijing 100044 Peoples R China|Beijing Key Lab Adv Informat Sci & Network Techno Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Informat Sci Beijing 100044 Peoples R China|Beijing Key Lab Adv Informat Sci & Network Techno Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Informat Sci Beijing 100044 Peoples R China|Beijing Key Lab Adv Informat Sci & Network Techno Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Informat Sci Beijing 100044 Peoples R China|Beijing Key Lab Adv Informat Sci & Network Techno Beijing 100044 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Reversible data hiding; Pixel-value-ordering; Two-dimensional histogram; Pairwise embedding; Adaptive embedding;

    机译:可逆数据隐藏;像素值排序;二维直方图;成对嵌入;自适应嵌入;

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