在Contourlet域中,结合计算全息技术提出一种基于计算全息的强鲁棒性自适应水印算法.将两个原始水印图像利用共轭对称延拓傅立叶计算全息分别生成对应的全息水印,并利用预处理方法对全息水印进行加密处理.将原始图像进行2级Contourlet变换,得到的中频信息进行8方向分解,得到8个方向子带.利用Contourlet变换的多方向性和各向异性,将两幅加密全息水印自适应地替换中频的两个方向子带,实现水印的嵌入.实验结果表明,含水印图像与原始图像的PSNR值为38.385 7 dB,水印隐蔽性好.在JPEG压缩因子为30的情况下,提取的水印信息清晰.当剪切含水印图像30％时,提取出的水印信息依然清晰可辨认.对噪声和低通滤波攻击均有很强的抵抗能力,并且可以有效抵抗打印扫描攻击.在水印提取时,不需要原始图像.本文提出的数字水印算法可以广泛应用在数字图像和印刷图像的版权保护中.
参考文献
| [1] | 李新娥,班皓,任建岳,金龙旭,李国宁.一种多传感器图像融合与数字水印技术[J].液晶与显示,2014(02):286-292. |
| [2] | 申静.一种利用人眼视觉特性的数字图像水印技术[J].液晶与显示,2011(02):234-240. |
| [3] | Papakostas G A,Tsougenis E D,Koulouriotis D E.Moment-based local image watermarking via genetic optimization[J].Applied Mathematics and Computation,2014,227:222-236.,2014. |
| [4] | Ishtiaq M,Jaffar M A,Choi T S.Optimal sub-band and strength selection for blind watermarking in wavelet domain[J].Imaging Science Journal,2014,62(3):171-177.,2014. |
| [5] | Chen C H,Tang Y L,Wang C P,et al.A robust watermarking algorithm based on salient image features[J].Optik,2014,125(3):1134-1140.,2014. |
| [6] | Takai N,Mifune Y.Digital watermarking by a holographic technique[J].Applied Optics,2002,41(5):865-873.,2002. |
| [7] | 马建设,任振波,苏萍,夏飞鹏.多重计算全息水印技术[J].光学精密工程,2013(08):2111-2120. |
| [8] | Martinez C,Laulagnet F,Lemonnier O.Gray tone image watermarking with complementary computer generated holography[J].Optics Express,2013,21 (13):15438-15451.,2013. |
| [9] | Li J Z.Robust image watermarking scheme against geometric attacks using a computer-generated hologram[J].Applied Optics,2010,49(32):6302-6312.,2010. |
| [10] | Giuseppe S S,Michele D S.Holographic watermarking for authentication of cut images[J].Optics and Lasers in Engineering,2011,49(12):1447-1455.,2011. |
| [11] | 孙刘杰,庄松林.双随机相位加密同轴傅里叶全息水印防伪技术[J].光学学报,2007(04):621-624. |
| [12] | 孙刘杰,庄松林.加密同轴全息数字水印[J].光学精密工程,2007(01):131-137. |
| [13] | 孙云峰,翟宏琛,杨晓苹,王明伟.傅立叶计算全息数字水印在彩色图像印刷防伪中的应用[J].光电子·激光,2008(07):952-955. |
| [14] | 黄素娟,王朔中,于瀛洁.共轭对称延拓傅里叶计算全息[J].物理学报,2009(02):952-958. |
| [15] | 黄素娟,王杜瑶,刘晓静,王朔中.基于小波变换的硬拷贝全息水印[J].光电子．激光,2011(09):1415-1420. |
| [16] | Do M N,Vetterli M.Contourlets:A new directional multiresolution image representation[C].Signals,Systems and Computers,2002,1:497-501.,2002. |
| [17] | Ranjbar S,Zargari F,Ghanbari M.A highly robust two-stage Contourlet-based digital image watermarking method[J].Signal Processing:Image Communication,2013,28(10):1526-1536.,2013. |
| [18] | Qin,C,Wen,X B.A novel digital watermarking algorithm in Contourlet domain[J].Journal of Information and Computational Science,2014,11 (2):519-526.,2014. |
| [19] | Mo J,Ma Z F,Huang Q L,et al.An adaptive watermarking scheme using SVD in Contourlet domain[J].Advances in Information Sciences and Service Sciences,2012,4 (15):221-232.,2012. |
| [20] | Jiang A P,Yao D.A Contourlet watermarking algorithm based on fractal dimension and one-dimensional logistic chaotic encryption[J].International Journal of Advancements in Computing Technology,2012,4(19):317-323.,2012. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%