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首页> 外文期刊>Expert systems with applications >A DWT-SVD based adaptive color multi-watermarking scheme for copyright protection using AMEF and PSO-GWO
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A DWT-SVD based adaptive color multi-watermarking scheme for copyright protection using AMEF and PSO-GWO

机译：一种基于DWT-SVD的自适应色彩多水印方案，用于使用氨和PSO-GWO的版权保护

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摘要

Color multi-watermarking is a challenge in the field of copyright protection, and the key in the color multi watermarking technology is how to determine the optimal embedding regions and embedding strengths to achieve the trade-off among multiple watermarks while maintaining great invisibility, sufficient robustness, and large capacity. In order to tackle these problems, an adaptive multiple embedding factors (AMEF) algorithm for calculating the optimal embedding regions and the optimal embedding strengths is proposed in this paper to embed multiple color watermarks simultaneously. In the presented AMEF algorithm, we propose that the optimal embedding regions are determined by the contrast function of different blocks. Then we determine the multiple embedding strengths to depend on the weighted ratio of the contrast values of blocks and the eigenvalues of different marks. Furthermore, in order to calculate the weight value in the AMEF algorithm, we define a single objective function and utilize a hybrid particle swarm optimization and grey wolf optimizer (PSO-GWO) algorithm to optimize the objective function. In this work, by the use of the discrete wavelet transform (DWT), singular value decomposition (SVD) and AMEF, four encrypted color watermarks are inserted into the selected regions of the color (normal or medical) host image, simultaneously. Then watermarked host image is tested under various attacks and compared to other recent existing schemes. The experimental results demonstrate that the proposed scheme can effectively achieve the trade-off among the invisibility, robustness and capacity, simultaneously. And from the comparison results, the proposed scheme possesses high security, large capacity, and strong robustness against various attacks while maintaining good invisibility.
机译：颜色多水印是版权保护领域的挑战，色彩多水印技术的关键是如何确定最佳的嵌入区域和嵌入优势，以实现多个水印之间的权衡，同时保持良好的隐形，充足的鲁棒性和大容量。为了解决这些问题，提出了一种用于计算最佳嵌入区域和最佳嵌入强度的自适应多嵌入因子（AMEF）算法和最佳嵌入强度，以同时嵌入多种颜色水印。在呈现的amef算法中，我们建议通过不同块的对比度确定最佳嵌入区域。然后，我们确定多个嵌入强度，以取决于块的对比度值和不同标记的特征值的加权比。此外，为了计算AMEF算法中的权重值，我们定义了单个目标函数，并利用混合粒子群优化和灰狼优化器（PSO-GWO）算法来优化目标函数。在这项工作中，通过使用离散小波变换（DWT），奇异值分解（SVD）和Amef，将四个加密的彩色水印同时插入颜色（正常或医疗）主体图像的所选区域。然后在各种攻击下测试水印的主机图像，并与其他最近的现有方案进行了测试。实验结果表明，该方案同时可以有效地实现隐形，鲁棒性和能力之间的权衡。从比较结果来看，拟议方案具有高安全性，大容量，以及对各种攻击的强大稳健性，同时保持良好的隐形。

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