抗几何攻击的RGB图像鲁棒水印

doi:10.3969/j.issn.0255-8297.2018.02.017

应用科学学报 ›› 2018, Vol. 36 ›› Issue (2): 393-410.doi: 10.3969/j.issn.0255-8297.2018.02.017

• 多媒体信息安全专刊 • 上一篇

抗几何攻击的RGB图像鲁棒水印

李敬轩, 项世军

暨南大学信息科学技术学院/网络空间安全学院, 广州 510632

收稿日期:2018-01-31 出版日期:2018-03-31 发布日期:2018-03-31
作者简介:项世军,教授,研究方向:信息隐藏,E-mail:shijun_xiang@qq.com
基金资助:
国家自然科学基金（No.61772234，No.61272414）资助

Robust Watermarking of RGB Image Against Geometric Attacks

LI Jing-xuan, XIANG Shi-jun

College of Information Science and Technology, Jinan University/College of Cyber Security, Guangzhou 510632, China

Received:2018-01-31 Online:2018-03-31 Published:2018-03-31

摘要/Abstract

摘要：

为了提高RGB彩色图像水印抗几何攻击的性能，通过对RGB图像的3个通道进行优化处理，提出了一种基于RGB图像的鲁棒水印算法.首先，提取RGB图像中的G通道和B通道的像素值并分别将其扩大2倍和3倍，通过高斯低通滤波后利用图像的均值和直方图嵌入水印.与G通道和B通道像素值未经扩大的RGB图像水印进行对比，测试表明G通道和B通道的像素值经扩大后的鲁棒性较好.其次，分别在RGB图像的3个通道R、G、B中嵌入相同数量比特的水印信息，结果表明水印图像中的3个通道R、G、B均能抵抗几何攻击，但每个通道的鲁棒性并不相同.基于100幅RGB图像的实验结果表明了所提出算法在抗几何攻击上的有效性.

关键词: 几何攻击, 鲁棒水印, RGB图像, 直方图

Abstract:

In this paper, a robust watermarking algorithm based on RGB image is proposed for anti-geometric attacks by optimizing R, G and B channels. Firstly, the pixels in G and B channels of an image are expanded twice and three times, respectively. After that, the image is fltered by a Gaussian low-pass flter so that its mean and histogram can be used for watermark embedding. Comparing with the watermarking algorithm without pixel expanding in G and B channels, the proposed pixel-expanded algorithm shows stronger robustness. Furthermore, we embed the same number of bits into R,G and B channels for robustness testing, and the experimental results with 100 RGB images show that the strategy to expand the pixels in G and B channels is benefcial to improve the robustness of histogram-based watermarking for anti-geometric attacks.

Key words: geometric attacks, robust watermarking, RGB images, histogram

中图分类号:

TP309

李敬轩, 项世军. 抗几何攻击的RGB图像鲁棒水印[J]. 应用科学学报, 2018, 36(2): 393-410.

LI Jing-xuan, XIANG Shi-jun. Robust Watermarking of RGB Image Against Geometric Attacks[J]. Journal of Applied Sciences, 2018, 36(2): 393-410.

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抗几何攻击的RGB图像鲁棒水印

Robust Watermarking of RGB Image Against Geometric Attacks

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