一种基于DCT和SVM的数字水印方法

Hui Chen, Ling Zhang
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引用次数: 2

摘要

信息隐藏的重要方向是数字水印技术。传统的数字水印具有抗一般攻击的优势,但难以抵抗几何畸变。提出了一种基于离散余弦变换和支持向量机的数字水印算法。首先利用分块离散余弦变换进行水印嵌入,然后利用训练好的支持向量机对几何参数进行粗略校正,利用模板匹配法对已有误差进行校正。实验表明,该算法不仅能抵抗传统的噪声、滤波、裁剪等攻击,而且对几何畸变具有较好的鲁棒性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Novel Digital watermarking Approach under the DCT and SVM
The important direction of information hiding is digital watermarking technology. The traditional digital watermarking is advantage to against general attacks, but it is difficult to the geometrial distortions. This paper proposes a novel digital watermarking based on discrete cosine transform and support vector machine. Firstly, the block discrete cosine transformation is used for watermarking embedding, then the trained support vector machine is used to roughly correct the geometric parameters and the template matching method is used to correct the existing errors. Experiments show that the purposed algorithm is not only against traditional attacks such as noise, filtering and clipping, but also better robustness against geometrial distortions.
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