一種有效抵抗裁剪攻擊的小波域盲水印算法
A Blind Wavelet-Based Watermarking with Robust for Image Cropping
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摘要: 該文提出了一種有效抵抗裁剪攻擊的小波域盲水印算法,能從小的圖像塊上檢測(cè)出水印。首先將圖像進(jìn)行小波變換,選擇兩個(gè)所需要的子帶,利用相鄰特征平均值和奇偶判決法在兩個(gè)子帶上各自重復(fù)內(nèi)嵌一半水印,在水印檢測(cè)過程中不需要原始圖像。實(shí)驗(yàn)結(jié)果表明,該算法具有較好的透明性,對(duì)各種攻擊有較強(qiáng)的魯棒性,尤其是明顯增強(qiáng)了小波域水印在面臨裁剪攻擊和聯(lián)合攻擊時(shí)的魯棒性。
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關(guān)鍵詞:
- 數(shù)字水印; 小波變換; 鄰居特征平均值; 奇偶判決法
Abstract: A blind wavelet-based watermarking algorithm with robust for image cropping is proposed. The original image is transformed using wavelet transform and the watermarks are embedded in two selected subbands according to neighboring symbols mean value and odd-even adjugement rule. This is a blind watermarking algorithm which can confirm the copyright without original image. Experimental results and attack analysis show that the watermark algorithm proposed in this paper is transparent and robust to various attacks. In particular, the robustness of wavelet domain watermarking to cropping attack and incorporating attacks is increased. -
Cox I J, et al.. Secure spread spectrum watermarking for multimedia[J].IEEE Trans. on Image Processing.1997, 6(12):1673-1687[2]Kwo H, Feng J. New hexagonal watermark embedding in wavelet domain. Proc. of 2001 International Symposium, Intelligent Multimedia, Video and Speech Processing, 2001. Hong Kong,2001:75 - 78.[3]Bami M, Bartolini F, Piva A. Improved wavelet-based watermarking through pixel-wise masking[J].IEEE Trans. on Image Processing.2001,10(5):783-[4]華先勝,石青云.局部化數(shù)字水印算法.中國(guó)圖象圖形學(xué)報(bào),2001,6(7):642-647. -
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