摘要
针对立体图像版权保护问题,提出了一种基于左右视点相关性的立体图像鲁棒水印方法。由于张量分解能够较好保存图像的主要能量,因此,首先利用彩色视点中RGB三通道之间的相关性,对左右视点分别进行张量分解。每一个视点分解出三个特征图,其中每个视点的第一特征图保留了每个视点中较强的三通道关系。其次,结合左右视点之间的相关性,联合左右视点的第一特征图进行张量分解,得到立体图像的主要能量特征图。最后,将主要能量特征图进行奇异值分解,并嵌入水印从而提高鲁棒性。实验结果表明,该方法具有较高的鲁棒性和不可见性,并且实现了水印的盲提取。
To solve the copyright protection of stereo images, a robust stereo image watermarking method based on correlations of left and right views is proposed. Because the tucker decomposition can preserve the main energy of the image well, tucker decomposition is performed on left and right views, respectively, to make full use of the correlations of three channels in the color view. Each view is decomposed into three feature images, where the first feature map retains relationships of three channels in each view. Secondly, considering correlations between the left and right views, the first feature images of the left and right viewpoints are combined to be performed by using tucker decomposition, and the main energy features images of the stereo image are obtained. Finally, the main energy feature image is decomposed by singular value decomposition, and watermark is embedded for the purpose of im-proving the robustness. Experimental results show that the proposed method has high robustness and invisibility, and realizes blind extraction of watermark.
作者
张芳燕
骆挺
蒋刚毅
徐海勇
周武杰
Zhang Fangyan;Luo Ting;Jiang Gangyi;Xu Haiyong;Zhou Wujie(Faculty of Information Science and Engineering,Ningbo University,Ningbo,Zhejiang 315211,China;College of Science and Technology,Ningbo University,Ningbo,Zhejiang 315212,China;College of Information Science and Electronic Engineering,Zhejiang University of Science and Technology,Hangzhou,Zhejiang 310023,China)
出处
《光电工程》
CAS
CSCD
北大核心
2018年第12期1-11,共11页
Opto-Electronic Engineering
基金
国家自然科学基金项目(61501270)
宁波市自然科学基金项目(2017A610127)~~
关键词
立体图像
鲁棒水印
张量分解
相关性
盲提取
stereo image
robust watermarking
tucker decomposition
correlation
blind extraction
