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首页> 外文会议>Independent Component Analyses, Wavelets, Unsupervised Smart Sensors, and Neural Networks IV >A Novel Multi-Strategy Watermark Embedding Technique
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A Novel Multi-Strategy Watermark Embedding Technique

机译：一种新颖的多策略水印嵌入技术

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摘要

Different digital watermarking schemes had been proposed to address this issue of ownership identification. Early work on digital watermarking focused on information hiding in the spatial domain or transform domain respectively. Usually the watermark recovered result was not as satisfaction as the demand. Some multi-describing techniques were proposed for watermark embedding lately. Enlightened by these techniques, a novel blind digital image watermarking algorithm based on multi strategy is put forward in this paper. The watermark is embedded in multi-resolution wavelet transform domain of the original image. Based on spread spectrum techniques, the algorithm is composed of three new techniques to improve robustness, imperceptibility and security. These new techniques are as follow: First, multi- intensity embedding technique is adopted in the embedding process. Because the intensity of watermark has different influences to wavelet coefficient in different resolution layer, so using different intensity in corresponding layer, we can gain the merit of stronger anti-attack ability and imperceptibility Second, applying spread spectrum code to permute the original watermark so a new scrambling watermark is established. By reducing the effect of destroyed watermark image, the technique has the ability of anti-clipping, moreover, the technique improves the security of watermarking for needing scrawling password to extract the original watermark. Third, interlaced watermark embedding technique is introduced. In this technique, we interlace several copies of watermark in different resolution to embed in wavelet transform domain. As a result the recovered watermark is shown better performance after various attacks.
机译：已经提出了不同的数字水印方案来解决这个所有权识别问题。数字水印的早期工作集中于分别隐藏在空间域或变换域中的信息。通常，水印恢复的结果不如需求令人满意。最近提出了一些用于水印嵌入的多描述技术。在这些技术的启发下，提出了一种基于多策略的新型盲数字图像水印算法。水印被嵌入到原始图像的多分辨率小波变换域中。该算法基于扩频技术，由三种提高鲁棒性，感知能力和安全性的新技术组成。这些新技术如下：首先，在嵌入过程中采用多强度嵌入技术。由于水印强度在不同分辨率层对小波系数的影响不同，因此在相应层使用不同的强度，可以得到较强的抗攻击能力和不可感知性。其次，应用扩频码对原始水印进行置换。建立新的加扰水印。该技术通过减少破坏水印图像的效果，具有抗剪裁的能力，并且由于需要草拟密码来提取原始水印而提高了水印的安全性。第三，介绍了隔行水印嵌入技术。在这项技术中，我们以不同的分辨率对水印的多个副本进行交织，以嵌入到小波变换域中。结果，在各种攻击之后，恢复的水印显示出更好的性能。

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