| 基于旋转不变性特征的图像被动认证算法 |
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| 引用本文： | 刘潘梅,吴建源.基于旋转不变性特征的图像被动认证算法[J].湖南工程学院学报(自然科学版),2011(2):38-41. |
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| 作者姓名： | 刘潘梅 吴建源 |
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| 作者单位： | 广东培正学院计算机科学与工程系,广州,510830 |
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| 摘 要： | 提出了基于旋转不变性特征的图像被动认证算法.该算法将图像分为部分重叠的子块,对各子块进行R-变换,并对变换后的数据进行归一化,提取归一化后的数据奇异值,根据子块奇异值的相似度来确定图像复制-粘贴篡改块对,从而得出篡改认证结果.该算法能有效地对经过旋转的篡改区域进行认证,有较好的检测效果.
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| 关 键 词： | 旋转不变性 R-变换 奇异值分解 被动认证 |
Image Passive Authentication by Using Rotation Invariant |
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| LIU Pan-mei,WU Jian-yuan.Image Passive Authentication by Using Rotation Invariant[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2011(2):38-41. |
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| Authors: | LIU Pan-mei WU Jian-yuan |
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| Institution: | LIU Pan-mei1,WU Jian-yuan1(Department of Computer Science and Engineering,Guang Dong Peizheng College,Guangzhou 510830,China) |
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| Abstract: | An authentication algorithm based on rotation invariant is proposed.This method segments the image into overlapped blocks,performs R-transform on the blocks,normalizes to the data,extracts singular values from the normalized data,determines the copy-move blocks according to the similarity of the singular values,and finally obtains the tamper detection result.This algorithm can effectively detect the tampered area which is rotated.It has good detection results. |
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| Keywords: | rotation invariant r-transform singular value decomposition passive authentication |
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