| 一种基于块分类的自适应数字水印算法 |
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| 引用本文： | 汪春生,程义民,王以孝.一种基于块分类的自适应数字水印算法[J].计算机工程与应用,2002,38(21):106-109,141. |
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| 作者姓名： | 汪春生 程义民 王以孝 |
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| 作者单位： | 中国科学技术大学电子科学与技术系,合肥,230026 |
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| 摘 要： | 提出了一种采用可视模板作为水印信号,利用人的视觉系统特性,将图象块进行分类,通过在不同类图象块DCT域中修改中频系数来嵌入不同强度水印的算法,可分别应用于私有水印和公有水印。实验结果表明,应用所提出的算法实现的水印对常见的图象处理和噪声干扰具有较好的鲁棒性。
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| 关 键 词： | 数字水印 版权保护 视觉系统特性 |
| 文章编号： | 1002-8331-(2002)21-0106-04 |
An Adaptive Digital Watermarking Algorithm Based on the Classification of Image Blocks |
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| Wang Chunsheng Chen Yimin Wang Yixiao.An Adaptive Digital Watermarking Algorithm Based on the Classification of Image Blocks[J].Computer Engineering and Applications,2002,38(21):106-109,141. |
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| Authors: | Wang Chunsheng Chen Yimin Wang Yixiao |
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| Abstract: | This paper proposes a new algorithm which is based on the characters of HVS(human visual system)and embed the watermarks with visually recognizable patterns.This algorithm classifies the blocks of image into different kinds and embed different strength wartmarking component into the middle-frequency DCT coefficient of corresponding kind of image block.The experimental results display that the watermarks generated with the proposed algorithm are in-visible and robust against commonly used image processing techniques and noise. |
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| Keywords: | digital watermarking copyright protection characters of HVS |
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