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Histogram Modification and Wavelet Transform for High Performance Watermarking

机译：直方图修改和小波变换用于高性能水印

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摘要

This paper proposes a reversible watermarking technique for natural images. According to the similarity of neighbor coefficients' values in wavelet domain, most differences between two adjacent pixels are close to zero. The histogram is built based on these difference statistics. As more peak points can be used for secret data hiding, the hiding capacity is improved compared with those conventional methods. Moreover, as the differences concentricity around zero is improved, the transparency of the host image can be increased. Experimental results and comparison show that the proposed method has both advantages in hiding capacity and transparency.
机译：本文提出了一种用于自然图像的可逆水印技术。根据小波域中相邻系数值的相似性，两个相邻像素之间的大多数差异接近于零。直方图是基于这些差异统计数据构建的。由于更多的峰值可以用于秘密数据隐藏，因此与传统方法相比，隐藏能力得到了提高。此外，由于改善了零附近的同心度，因此可以增加主图像的透明度。实验结果和比较表明，该方法在隐藏能力和透明性上均具有优势。

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  • 来源
    《Mathematical Problems in Engineering》 |2012年第10期|164869.1-164869.14|共14页
  • 作者

    Ying-Shen Juang; Lu-Ting Ko; Jwu-E Chen; Yaw-Shih Shieh; Tze-Yun Sung; Hsi Chin Hsin;

  • 作者单位

    Department of Business Administration, Chung Hua University, Hsinchu 30012, Taiwan;

    Department of Electrical Engineering, National Central University, Chungli 32001, Taiwan;

    Department of Electrical Engineering, National Central University, Chungli 32001, Taiwan;

    Department of Electronics Engineering, Chung Hua University, Hsinchu 30012, Taiwan;

    Department of Electronics Engineering, Chung Hua University, Hsinchu 30012, Taiwan;

    Department of Computer Science and Information Engineering, National United University, Miaoli 36003, Taiwan;

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