| 基于CDMA的多重数字水印 |
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| 引用本文： | 彭德云,王嘉祯,王素贞,杨素敏,徐波.基于CDMA的多重数字水印[J].计算机工程与应用,2007,43(11):30-32. |
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| 作者姓名： | 彭德云 王嘉祯 王素贞 杨素敏 徐波 |
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| 作者单位： | 1. 军械工程学院,计算机工程系,石家庄,050003
2. 河北经贸大学,计算机中心,石家庄,050091 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对多用户共享版权时联合水印嵌入等需求,提出了基于CDMA的多用户多重数字水印算法。提出并实现了小波域直接嵌入(WD)和基于邻域线性预测值嵌入(WNLP)两种CDMA水印方案。分析了用户数量和嵌入深度对含印图像质量和提取水印质量的影响。实验结果表明,该算法能有效解决多重数字水印中水印碰撞和用户数量受限问题。
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| 关 键 词： | 多重数字水印 CDMA 共享版权保护 |
| 文章编号： | 1002-8331（2007）11-0030-03 |
| 收稿时间： | 2006-8-22 |
| 修稿时间： | 2006-11 |
CDMA Based Multiple Digital Watermarking |
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| PENG De-yun,WANG Jia-zhen,WANG Su-zhen,YANG Su-min,XU Bo.CDMA Based Multiple Digital Watermarking[J].Computer Engineering and Applications,2007,43(11):30-32. |
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| Authors: | PENG De-yun WANG Jia-zhen WANG Su-zhen YANG Su-min XU Bo |
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| Affiliation: | 1.Department of Computer Engineering, Mechanical Engineering College, Shijiazhuang 050003, China ;2.Center of Computer,Hebei University of Economics and Business,Shijiazhuang 050091 ,China |
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| Abstract: | This paper proposes a new type of multi-user digital watermarking based on CDMA,which aims at the demand of multi-user copyright sharing protection.It presents two CDMA based approaches,i.e.Wavelet domain Direct approach(WD) and Wavelet domain Neighbor Linear Prediction approach(WNLP).It analyses the influence of user number and embedding depth on the quality of watermarked images and extracted watermarks.Experiment results show that the algorithm can solve the problems of watermarking collision and relieve the restriction of user number in multiple watermarking algorithms. |
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| Keywords: | multiple watermarking Code Division Multiple Access(CDMA) copyright sharing protection |
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