| 基于小波域中视觉门限模型的数字水印技术 |
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| 引用本文： | 韦志辉,富煜清.基于小波域中视觉门限模型的数字水印技术[J].东南大学学报(自然科学版),1998,28(5):44-48. |
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| 作者姓名： | 韦志辉 富煜清 |
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| 作者单位： | [1]南京理工大学理学院 [2]东南大学无线电工程系 |
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| 摘 要： | 给出了一种在小波变换域中给图像加水印的方案，本方案利用了小波分析的优良性质，结合人类视觉系统（ＨＶＳ）的特性，基于小波变换域中的视觉门限模型，对小波变换后的图像系数按不同的方向，层次子带分别加水印，使得在每个小波系数所加的水印的幅值不超过此系数所能掩盖的失真，这样可以保证水印在不可视的前提下尽可能提高坚固性，模拟实验结果表明这个方案取得了良好的效果。
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| 关 键 词： | 数字水印 小波变换 人类视觉系统 图像处理 |
Digital Watermarking Technique of Image Based on Visibility Threshold Model in Wavelet Transform Domain |
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| Wei Zhihui,Qin Peng,Ouyang Hongbin.Digital Watermarking Technique of Image Based on Visibility Threshold Model in Wavelet Transform Domain[J].Journal of Southeast University(Natural Science Edition),1998,28(5):44-48. |
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| Authors: | Wei Zhihui Qin Peng Ouyang Hongbin |
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| Abstract: | We give a new digital watermarking scheme in wavelet transform domain. This scheme utilizes excellent properties of wavelet transform and some characteristics of human visual system (HVS). Based on the visibility model in wavelet transform domain, watermark is added in subband images with different directions and levels so that the amplitude of watermark added in each coefficient does not exceed the distortion marked by it. Hence, our scheme improves the robust of watermarking at the most invisibility of watermarking. Experimental results show that our scheme has very excellent effect. |
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| Keywords: | digital watermarking wavelet transform human visual system |
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