| 一种自适应灰度级数字水印改进算法 |
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| 引用本文： | 关素洁,陆伟锋,邓少波. 一种自适应灰度级数字水印改进算法[J]. 计算机应用与软件, 2009, 26(3) |
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| 作者姓名： | 关素洁 陆伟锋 邓少波 |
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| 作者单位： | 1. 南昌工程学院计算机科学与技术系,江西,南昌,330099
2. 南昌工程学院理学系,江西,南昌,330099 |
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| 摘 要： | 灰度级水印图像,因信息量大而影响嵌入质量与稳定性.提出一种基于多级小波变换新的嵌入策略,使得嵌入灰度级水印图像的数据量更少,水印稳定性更强,并且具有良好的抗剪切、擦除、噪音、滤波与JPEG压缩失真的能力.在嵌入过程中,采用公钥密码体制加密,使得水印安全性得到进一步提高.
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| 关 键 词： | 小波变换 灰度级水印 公钥密码体制 |
AN IMPROVED ALGORITHM FOR ADAPTIVE GRAY LEVEL DIGITAL IMAGE WATERMARKING |
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| GUAN Sujie,LU Weifeng,DENG Shaobo. AN IMPROVED ALGORITHM FOR ADAPTIVE GRAY LEVEL DIGITAL IMAGE WATERMARKING[J]. Computer Applications and Software, 2009, 26(3) |
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| Authors: | GUAN Sujie LU Weifeng DENG Shaobo |
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| Affiliation: | Department of Computer Science and Technology;Nanchang Institute of Technology;Nanchang 330099;Jiangxi;China;Department of Science;China |
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| Abstract: | Gray level digital image watermarking affects the embedding quality and stability due to too much information.In this paper it proposes a new embedding strategy based on multi-level wavelet transform,which makes the gray level watermarking image embedded has less information and stronger robustness,and with better capability against shearing,abrasion,noise,wave filtering as well as distortion under JPEG compression.Public-Key System is adopted in the process of embedding,so the security of watermarking imag... |
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| Keywords: | Wavelet transform Gray level digital image watermarking Public-key system |
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