| 基于BTC域的图像脆弱水印算法 |
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| 引用本文： | 姜明芳,朱宁波.基于BTC域的图像脆弱水印算法[J].科学技术与工程,2009,9(3). |
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| 作者姓名： | 姜明芳 朱宁波 |
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| 作者单位： | 1. 湖南第一师范学院图书馆,长沙,410205
2. 湖南大学计算机与通信学院,长沙,410082 |
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| 基金项目： | 湖南省教育厅资助项目 |
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| 摘 要： | 提出一种基于块截短编码域的图像脆弱水印算法.算法利用BTC编码器重建电平的奇偶性以嵌入水印,水印提取时无须原图像参与.算法计算开销低,可应用于实时环境图像数据认证.实验结果表明算法具有好的透明性,嵌入水印后图像峰值信噪比高达45 dB以上,同时该方案对恶意攻击有较好的检测与定位能力.
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| 关 键 词： | 图像水印 块截短编码 脆弱 图像认证 |
Image Fragile Watermarking Algorithm Based on BTC Domain |
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| JIANG Ming-fang,ZHU Ning-bo.Image Fragile Watermarking Algorithm Based on BTC Domain[J].Science Technology and Engineering,2009,9(3). |
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| Authors: | JIANG Ming-fang ZHU Ning-bo |
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| Institution: | Library;Hunan First Normal College;Changsha 410205;P.R.China;School of Computer and Communication;Hunan University1;Changsha 410082;P.R.China |
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| Abstract: | A digital image fragile watermarking technique based on BTC (Block Truncation Coding) domain is presented. The watermark is embedded into the host image according to the odevity of the reconstruction levels of the BTC quantizer. The watermark extraction need not resort to the original image, and the algorithm has low computation cost, and can be applied to digital image authentication in real-time environment. Experimental results prove that proposed algorithm have good invisibility with the PSNR value abov... |
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| Keywords: | image watermarking block truncation coding fragile image authentication |
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