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Hierarchical recovery for tampered images based on watermark self-embedding

机译：基于水印自嵌入的篡改图像的分层恢复

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摘要

In this paper, we propose a new self-embedding watermarking scheme with hierarchical recovery capability. The binary bits in the adopted MSB layers are scrambled and individually interleaved with different extension ratios according to their importance to image visual quality. The interleaved data, which are regarded as reference bits for tampering recovery, are segmented into a series of groups corresponding to the divided non-overlapping blocks, and then embedded into the LSB layers of blocks together with authentication bits of tampering detection. Because the extension ratios of MSB-layer bits are based on the hierarchical mechanism, the efficiency of reference bits is increased, and higher MSB layers of tampered regions have greater probabilities to be recovered than lower MSB layers, which can improve the visual quality recovered results, especially for larger tampering rates. Experimental results demonstrate the effectiveness and superiority of the proposed scheme compared with some of state-of-the-art schemes.
机译：在本文中，我们提出了一种具有分层恢复能力的新的自嵌入水印方案。根据对图像视觉质量的重要性，对采用的MSB层中的二进制位进行加扰，并以不同的扩展比率分别进行交织。被视为篡改恢复的参考位的交织数据被分割为与所划分的非重叠块相对应的一系列组，然后与篡改检测的认证位一起被嵌入到块的LSB层中。由于MSB层位的扩展率基于层次机制，因此提高了参考位的效率，篡改区域的较高MSB层比较低的MSB层具有更高的恢复概率，可以改善视觉质量的恢复结果，尤其是对于较大的篡改率。实验结果表明，与一些最新方案相比，该方案的有效性和优越性。

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  • 来源
    《Displays》 |2017年第1期|52-60|共9页
  • 作者

    Fang Cao; Bowen An; Jinwei Wang; Dengpan Ye; Huili Wang;

  • 作者单位

    College of Information Engineering, Shanghai Maritime University, Shanghai 200135, China,School of Computer and Software, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China;

    College of Information Engineering, Shanghai Maritime University, Shanghai 200135, China;

    School of Computer and Software, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China;

    School of Computer, Wuhan University, Wuhan 430072, Hubei, China;

    School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;

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

    Self-embedding; Tampering detection; Hierarchical recovery; Reference sharing;

    机译：自我嵌入;篡改检测;分层恢复;参考共享;

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