| 一种基于小波变换和DOT量化的彩色图像盲水印算法 |
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| 引用本文： | 王楠,王晅,赵杰,何冰. 一种基于小波变换和DOT量化的彩色图像盲水印算法[J]. 沈阳大学学报：自然科学版, 2008, 20(3): 96-98 |
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| 作者姓名： | 王楠 王晅 赵杰 何冰 |
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| 作者单位： | 陕西师范大学物理与信息技术学院,陕西西安,710062 |
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| 摘 要： | 采用YIQ色彩空间，把载体亮度分量Y进行小波分解，将水印数据嵌入其低频子带的DCT系数中去．嵌入水印前采用置乱变换将水印图像置乱，消除像素间的空间相关性，提高算法的抗攻击能力．结果表明，该算法对常见的噪声、滤波、剪切、JPEG压缩等攻击有较强的鲁棒性．
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| 关 键 词： | 数字水印 YIQ色彩空间 小波变换 离散DCT变换 图像置乱 |
| 文章编号： | 1008-9225(2008)03-0096-04 |
| 修稿时间： | 2007-12-18 |
A Blind Watermarking Algorithm for Color Image Based on Wavelet Transform and DCT Quantization |
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| WANG Nan,WANG Xuan,ZHAO Jie,HE Bing. A Blind Watermarking Algorithm for Color Image Based on Wavelet Transform and DCT Quantization[J]. Journal of Shenyang University, 2008, 20(3): 96-98 |
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| Authors: | WANG Nan WANG Xuan ZHAO Jie HE Bing |
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| Affiliation: | (School of Physics and Information Technology, Shaanxi Normal University, Xi＇an 710062, China) |
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| Abstract: | The RGB space model of original color image is transformed to YIQ model and component Y is transformed by DWT, and then the watermark is embedded in low frequency in DCT domain. Before embedding the watermark, the image confusion method is used to eliminate the correlation of each pixel and the proposed method is improved to resist all kinds of attacks. The experiment shows that the method is robust to adding noise, filtering, cropping and JPEG compression. |
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| Keywords: | digital-watermarking YIQ color space wavelet transform discrete DCT image scrambling |
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