Resilient Color Image Watermarking Using Accurate Quaternion Radial Substituted Chebyshev Moments
Resilient Color Image Watermarking Using Accurate Quaternion Radial Substituted Chebyshev Moments
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DOI：
10.1145/3325193
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发表时间：
2019-06-01
影响因子：
5.1
通讯作者：
Darwish, Mohamed M.
中科院分区：
文献类型：
--
作者：
Hosny, Khalid M.;Darwish, Mohamed M.
提出了一种基于四元数的彩色图像水印算法。在该方法中，一组新的四元数径向取代切比雪夫矩（QRSCMs）的鲁棒性的几何不变图像水印。提出了一种高精度、快速、数值稳定的极坐标QRSCM计算方法。所提出的水印方法包括三个阶段。在第一阶段，Arnold变换被用来通过置乱二值水印来提高水印方案的安全性。在第二阶段中，计算所提出的宿主彩色图像的准确且稳定的QRSCM。在第三阶段中，加密的二进制水印被嵌入到宿主图像中，通过采用选择幅度QRSCM上的量化技术，其中，水印图像是通过将原始宿主彩色图像添加到补偿图像中而获得的。然后，二值水印可以直接提取，而不使用原始图像的QRSCM的幅度。数值实验中所提出的方法的性能进行了比较与现有的四元数矩为基础的水印方法。实验结果表明，与现有的基于四元数矩的水印算法相比，该算法在视觉不可感知性和鲁棒性方面都具有很好的效果.
In this work, a new quaternion-based method for color image watermarking is proposed. In this method, a novel set of quaternion radial substituted Chebyshev moments (QRSCMs) is presented for robust geometrically invariant image watermarking. An efficient computational method is proposed for highly accurate, fast, and numerically stable QRSCMs in polar coordinates. The proposed watermarking method consists of three stages. In the first stage, the Arnold transform is used to improve the security of the watermarking scheme by scrambling the binary watermark. In the second stage, the proposed accurate and stable QRSCMs of the host color image are computed. In the third stage, the encrypted binary watermark is embedded into the host image by employing the quantization technique on selected-magnitude QRSCMs where the watermarked color image is obtained by adding the original host color image to the compensation image. Then, the binary watermark can be extracted directly without using the original image from the magnitudes of QRSCMs. Numerical experiments are performed where the performance of proposed method is compared with the existing quaternion moment-based watermarking methods. The comparison clearly shows that the proposed method is very efficient in terms of the visual imperceptibility capability and the robustness under different attacks compared to the existing quaternion moment-based watermarking algorithms.