| 一种基于混沌变换和小波变换的零水印算法 |
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| 引用本文： | 张晓鹏,童小华,刘妙龙. 一种基于混沌变换和小波变换的零水印算法[J]. 测绘与空间地理信息, 2010, 33(1): 156-160 |
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| 作者姓名： | 张晓鹏 童小华 刘妙龙 |
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| 作者单位： | 同济大学,测量与国上信息工程系,上海,200092;同济大学,测量与国上信息工程系,上海,200092;同济大学,测量与国上信息工程系,上海,200092 |
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| 摘 要： | 根据零水印的概念,提出了一种基于混沌变换和小波变换相结合的水印生成算法。该方法不对原始图像作任何修改,在对原始水印混沌加密以后,利用小波变换低频系数特征实现水印的嵌入。试验证明,该方法解决了水印不可见性和鲁棒性之间的矛盾,具有很强的抗攻击能力。
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| 关 键 词： | 零水印 小波变换 混沌变换 二值化 |
A New Zero-watermark Algorithm Based on Chaotic Sequences and Wavelet Transform |
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| ZHANG Xiao-peng,TONG Xiao-hua,LIU Miao-long. A New Zero-watermark Algorithm Based on Chaotic Sequences and Wavelet Transform[J]. Geomatics & Spatial Information Technology, 2010, 33(1): 156-160 |
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| Authors: | ZHANG Xiao-peng TONG Xiao-hua LIU Miao-long |
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| Affiliation: | Department of Survey and Geo-Informatics;Tongji University;Shanghai 200092;China |
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| Abstract: | According to the conception of zero-watermarking,this paper proposed a zero-watermarking algorithm based on chaotic sequences and wavelet transform.The method realized embedding watermark by obtaining the extracted watermark image through the encrypted watermark and low-frequency sub-image after wavelet transform.Experimental result shows that the method is more robustness and improves transparency and security. |
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| Keywords: | zero-watermark DWT chaotic sequences binaryzation |
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