小波域半盲數(shù)字水印算法
A Novel Semi-blinding Watermarking Algorithm in the Wavelet Domain
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摘要: 提出一種新的小波域半盲數(shù)字水印算法：首先對圖像進(jìn)行小波分解，然后使用尺度交互式特征檢測模型(Scale interaction model for feature detection)提取逼近子圖的特征點(diǎn)，并由特征點(diǎn)構(gòu)造相應(yīng)的小波域特征樹，最后在特征樹的所有節(jié)點(diǎn)中嵌入二值水印信息。根據(jù)特征點(diǎn)的位置信息可以有效地提取水印序列。由于水印信息被嵌入到圖像的特征之中，故對JPEG，JPEG2000以及高斯白噪音等多種處理具有較強(qiáng)的魯棒性，是一種新型的第二代水印算法。
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關(guān)鍵詞:
- 數(shù)字水印; 特征點(diǎn); 尺度交互式特征檢測模型; 第二代水印
Abstract: A new semi-blinding watermarking algorithm in wavelet domain is proposed in this paper. The original image is first decomposed in wavelet domain, then the feature points are extracted from the lowest approximation with the scale interaction model for feature detection and the image feature tree in wavelet domain is created corresponding to the feature points. The binary watermark bits are embedded in all the nodes of the feature tree. Watermark extraction only needs the feature points position but not the original image. Since the watermark bits are inserted into the features of image, it is robust to common image processing, especially to the lossy compression such as JPEG, JPEG2000 and Gaussian noise. It belongs to the second generation watermarking schemes. -
Cox I J, Kilian J, Leighton F T, Talal S. Secure spread spectrum watermarking for multimedia.IEEE Trans. on Image Processing, 1997, IP-6(12): 1673-1686.[2]Kutter M.[J].Bhattacharjee S K, Ebrahimi T. Towards second generation watermarking schemes.The 6th International Conference on Image Processing (ICIP99), Kobe, Japan.1999,:-[3]王衛(wèi)衛(wèi),楊波,宋國鄉(xiāng).基于圖象特征的小波域水印算法.光子學(xué)報(bào),2001,30(7):856-860.[4]Manjunath B S, Shekhar C, Chellappa R. A new approach to image teature detection with applications[J].Patter Recognition.1996, 29(4):627-640 -
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