| 抗JPEG压缩的新图像认证算法 |
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| 引用本文： | 高宝建,冯峰.抗JPEG压缩的新图像认证算法[J].计算机工程与应用,2010,46(23):190-193. |
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| 作者姓名： | 高宝建 冯峰 |
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| 作者单位： | 西北大学 信息科学与技术学院，西安 710127 |
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| 基金项目： | 陕西省国际科学与技术合作项目基金 |
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| 摘 要： | 给出了一种从长度为n=2m-1的二进制信息序列中提取m比特摘要的方法和一种新的图像预处理方法。在此基础上，设计了一种新的适用于多区域篡改的图像认证算法。在JPEG质量因子QF340的情况下，该算法不仅可以区分正常的JPEG压缩失真和恶意篡改，还可以实现多区域篡改检测和准确定位，且具有较高的篡改检测概率和较低的虚警概率。理论分析和仿真实验均证明了该算法的正确性和有效性。
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| 关 键 词： | 图像认证 篡改检测与定位 JPEG压缩 |
| 收稿时间： | 2009-2-6 |
| 修稿时间： | 2009-4-2
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New image authentication algorithm with anti-JPEG compression |
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| GAO Bao-jian,FENG Feng.New image authentication algorithm with anti-JPEG compression[J].Computer Engineering and Applications,2010,46(23):190-193. |
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| Authors: | GAO Bao-jian FENG Feng |
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| Affiliation: | College of Information Science and Technology，Northwest University of China，Xi’an 710127，China |
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| Abstract: | A new method of distilling m bits abstract from the binary information sequence with the length of n=2m-1 and a new image pre-processing method are proposed.Based on those,a new image authentication algorithm applied to more than one tampered region is proposed.Under the condition of QF340,it not only can distinguish JPEG lossy compression and malicious tampering,but also can effectively detect more than one regions which are tampered and localized the tampered areas,at the same time,it has high probability of tampering detection and lower probability of false alarm.The theory analysis and the result of emulation show that this algorithm is correct and effective. |
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| Keywords: | image authentication tamper detection and location JPEG compression |
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