| 结合图像多种处理技术的数字水印算法 |
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| 引用本文： | 程兴国.结合图像多种处理技术的数字水印算法[J].武汉职业技术学院学报,2006,5(5):65-67. |
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| 作者姓名： | 程兴国 |
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| 作者单位： | 襄樊学院,物理系,湖北,襄樊,441053 |
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| 摘 要： | 利用小波变换多分辨率特性和人眼视觉特征,提出了一种新的彩色图像水印算法。算法先将不同强度的签名水印扩频到彩色图像不同色块的小波域,然后进行逆小波变换生成水印图像。为增强水印的鲁棒性,在添加水印之前对水印进行预处理。实验结果表明,该算法对常见的图像处理方法和压缩具有很强的鲁棒性。
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| 关 键 词： | 数字水印 混沌 扩频 小波变换 |
| 文章编号： | 1671-931X（2006）05-0065-03 |
| 收稿时间： | 2006-09-16 |
| 修稿时间： | 2006年9月16日 |
Watermarking Algorithm Combined With Multiplicate Techniques of Image Processing |
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| CHENG Xing-guo.Watermarking Algorithm Combined With Multiplicate Techniques of Image Processing[J].Journal of Wuhan Institute of Technology,2006,5(5):65-67. |
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| Authors: | CHENG Xing-guo |
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| Institution: | Department of Physics, Xiangfan University, Xiangfan 441053, China |
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| Abstract: | This thesis presents a color image accreditation algorithm by embedding multi-signature watermarks in image by taking advantages of the multi-resolution feature of wavelet transform and the property of visual system.With this algorithm,the multi-signature watermarks are mixed with the chaotic sequences and spread over the different wavelet domains of RGB color spaces of the image.Watermarked image is obtained by using inverse wavelet transform. In order to increase the robustness of watermark,the water using Chaos Technology should be preprocessed.It demon- strates through experimental results and analyses that the proposed algorithm is extremely robust to common image pro- cessing and JP-EG compression. |
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| Keywords: | digital watermark chaos spread spectrum wavelet transform |
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