陈青,周广州,王飞,夏剑峰.一种新的基于标志区的抗旋转盲水印算法[J].包装工程,2016,37(17):192-195.
CHEN Qing,ZHOU Guang-zhou,WANG Fei,XIA Jian-feng.A New Rotation Resistant Image Watermarking Based on Logo Band[J].Packaging Engineering,2016,37(17):192-195. |
| 一种新的基于标志区的抗旋转盲水印算法 |
| A New Rotation Resistant Image Watermarking Based on Logo Band |
| 投稿时间：2016-01-07 修订日期：2016-09-10 |
| DOI： |
| 中文关键词: 标志区 小波 旋转攻击 平移攻击 信号处理攻击 |
| 英文关键词: logo band wavelet rotation attack translation attack signal processing attack |
| 基金项目:国家 863 计划（2012AA050206） ；上海自然科学基金（12ZR1420800） ；上海理工大学国家级项目培育基金（16HJPYMS06） |
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| 中文摘要: |
| 目的 提出一种新的基于标志区的抗旋转盲水印算法。方法 将载体图像嵌入旋转标志区和水印区域标志区，旋转标志区用来检测图像的旋转角度，水印区域标志区用来寻找水印嵌入的区域；标志区的宽度大于10，防止旋转对空域系数的改变影响到检测标志区的位置及角度,该算法中标志区宽度选为12。对载体图像进行三级小波分解，确保能量的集中，减小因旋转对水印信息的影响。利用图像相邻像素的特征平均值，将水印信息嵌入到三次小波分解后的低频逼近子带中。结果 旋转攻击从0°～45°或90°～135°，随着角度的增加，NC值减小；在45°～90°或135°～180°时，随着角度的增加，NC值是增大的；在受到旋转45°和135°攻击后，提取不出水印信息。平移攻击和常规的信号处理攻击后NC值均大于0.8。结论 鲁棒性仿真实验表明该算法能很好地抵抗旋转攻击和平移攻击，并对常规的信号处理攻击具有很好的鲁棒性。 |
| 英文摘要: |
| The work aims to propose a new rotation resistant image watermarking based on logo brand. First carrier images were embedded into rotary logo band and watermarking logo band. The rotary logo band was used to measure the rotation angle, and the watermarking logo band was used to search the watermarking embedded region. The width of the logo band was more than 10 to prevent the changed airspace coefficient caused by the rotation from affecting the detection logo position and angle. The logo band width was 12 in this algorithm. Then the three level wavelet decomposition of carrier image was carried out to ensure concentration of energy and reduce the influence on the watermark extraction. Finally, by the average of adjacent pixels of the image, watermarking information was embedded into low-frequency sub-band after three level wavelet decomposition. When the rotation attack was at 0°～45°or 90°～135°, NC value decreased with the increase of angle; at 45°～90°or 135°～180°, NC value increased with the increase of angle; After being attacked at 45°or 135°, the watermark couldn't be extracted. After translation attack and conventional signal processing attack, NC value was greater than 0.8. In conclusion, experimental results show that the proposed watermarking algorithm is robust to rotation attacks and translation, as well as common signal processing attacks. |
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