| 一种基于图像内容的自恢复水印算法 |
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| 引用本文： | 何登平,范鹏. 一种基于图像内容的自恢复水印算法[J]. 四川理工学院学报(自然科学版), 2008, 21(4) |
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| 作者姓名： | 何登平 范鹏 |
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| 作者单位： | 重庆邮电大学通信学院,重庆,400065;重庆邮电大学通信学院,重庆,400065 |
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| 摘 要： | 文章提出了基于嵌入式小波编码的图像自恢复脆弱水印算法,它利用零树结构对自身图像分块进行压缩编码,得到自相关数据,再进行分块置乱后嵌入到原灰度图像位平面编码的低两位。通过实验仿真证明该算法既能对篡改图像的恶意操作具有很强的识别能力,又能恢复出被篡改位置的真实图像内容。
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| 关 键 词： | 数字水印 图像认证 篡改检测 自恢复 |
A Digital Watermarking of Image Authentication Algorithm Based on the DWT |
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| HE Deng-ping,FAN Peng. A Digital Watermarking of Image Authentication Algorithm Based on the DWT[J]. Journal of Sichuan University of Science & Engineering(Natural Science Editton), 2008, 21(4) |
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| Authors: | HE Deng-ping FAN Peng |
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| Abstract: | A fragile watermark algorithm is presented based on embed wavelet coding,which can recover the primary image itself.Utilizing the zerotree structure,thealgorithm compress and encode the image itself,and then gained self-correlative watermark data,and block scrambled before embed watermark data into the latter two bit place of gray level image's bit-plane code.The simulation and experiment proves the algorithm can accurately locate the juggled position and has good ability for self-recovery. |
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| Keywords: | digital watermarking image authentication tamper detection self-recovery |
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