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首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >A robust image watermarking method based on DWT, DCT, and SVD using a new technique for correction of main geometric attacks
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A robust image watermarking method based on DWT, DCT, and SVD using a new technique for correction of main geometric attacks

机译：一种基于DWT，DCT和SVD的鲁棒图像水印方法，并使用一种新技术校正主要几何攻击

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摘要

In this article, a new scheme based on a combination of DWT, DCT, and SVD domains is presented, in which the main focus is to provide proper solutions for reducing effect of geometric attacks. To address this goal, we divide host image into four nonoverlapping rectangular segments called sub-images and then watermark is independently embedded into each of them, using the hybrid scheme. The redundancy reduces effect of cropping attack. Moreover, in order to correct main geometric attacks, such as rotation, translation, and affine translation, we propose an inventional synchronization technique to recover geometrically attacked image via detection of desired image corners. A binary image in the first experiment and some 1D binary random sequences with different lengths in the next experiments are used as watermarks. Since the studied binary sequences have generally smaller lengths than the capacity offered by the proposed scheme, we are motivated to utilize error correction techniques, such as data replication and hamming code for them. Achieved results, compared with other geometric robust schemes, shows that the proposed scheme has stronger or comparable robustness against common signal processing and geometric attacks. (C) 2015 Elsevier GmbH. All rights reserved.
机译：在本文中，提出了一种基于DWT，DCT和SVD域的组合的新方案，其中主要重点是提供适当的解决方案以减少几何攻击的影响。为了实现此目标，我们将宿主图像划分为四个不重叠的矩形段（称为子图像），然后使用混合方案将水印独立地嵌入到每个子段中。冗余减少了裁剪攻击的影响。此外，为了校正主要的几何攻击，例如旋转，平移和仿射平移，我们提出了一种创新的同步技术，以通过检测所需的图像角来恢复受到几何攻击的图像。第一个实验中的二进制图像和下一个实验中一些具有不同长度的一维二进制随机序列用作水印。由于所研究的二进制序列的长度通常比所提出的方案所提供的容量小，因此我们有动机使用纠错技术，例如数据复制和汉明码。与其他几何鲁棒方案相比，所获得的结果表明，该方案对常见信号处理和几何攻击具有更强或相当的鲁棒性。 （C）2015 Elsevier GmbH。版权所有。

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