| 基于离散四元数余弦变换的彩色图像数字水印技术 |
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| 引用本文： | 盖琦.基于离散四元数余弦变换的彩色图像数字水印技术[J].光电子．激光,2009(9):1193-1197. |
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| 作者姓名： | 盖琦 |
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| 作者单位： | 南开大学现代光学研究所; |
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| 基金项目： | 国家自然科学基金资助项目(6057701760777007) |
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| 摘 要： | 将离散四元数余弦变换(DQCT)应用于彩色图像的数字水印技术中,提出了一种在彩色图像中嵌入水印的新技术。应用四元数理论把彩色图像作为一整体进行余弦变换,在彩色宿主图像的DQCT域中实现彩色水印图像的嵌入。实验表明,该方法具有较好的抗压缩能力,对高斯噪声、椒盐噪声和缩放攻击具有较好的鲁棒性。
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| 关 键 词： | 四元数 离散四元数余弦变换(DQCT) 彩色图像 数字水印 |
Color image digital watermarking using discrete quaternion cosine-transform |
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| GAI Qi.Color image digital watermarking using discrete quaternion cosine-transform[J].Journal of Optoelectronics·laser,2009(9):1193-1197. |
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| Authors: | GAI Qi |
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| Affiliation: | GAI Qi,SUN Yun-feng,WANG Xiao-lei,WANG Ming-wei,ZHAI Hongchen (Institute of Modern Optics,Nankai University,Tianjin 300071,China) |
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| Abstract: | A new method for color image watermarking using discrete quaternion cosine-transform(DQCT) is proposed.The color image can be processed as a whole rather than as separated color components in three channels.The watermark image can be embedded in the DQCT domain of the host color image.Experimental results show that this method has good resistance to JPEG compression and is robust against Gaussian noise,salt & pepper noise and image scaling attack. |
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| Keywords: | quaternion discrete quaternion cosine-transform(DQCT) color image digital watermarking |
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