| 基于有限差分的置换图像盲检测方法 |
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| 引用本文： | 王伟,方勇. 基于有限差分的置换图像盲检测方法[J]. 电子学报, 2010, 38(10): 2268-2272 |
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| 作者姓名： | 王伟 方勇 |
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| 作者单位： | 上海大学通信与信息工程学院,上海,200072;上海大学通信与信息工程学院,上海,200072 |
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| 基金项目： | 国家自然科学基金,上海市重点学科基金,上海市科委重点实验室基金 |
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| 摘 要： | 针对一类经过插值放大的置换篡改图像,本文提出了一种基于有限差分算法的周期特性的盲检测方法.该方法对插值信号进行有限差分,检测差分序列的周期特性,根据周期特性的异同辨识不同插值因子的放大图像,具有原理简单,计算量小的优点.实验表明,该方法对经历不同插值方式的置换篡改图像均能达到较高检测正确率,同时,算法对高斯噪声和有损JPEG压缩具有较好的鲁棒性.
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| 关 键 词： | 置换图像 插值检测 有限差分 周期特性 盲认证 |
| 收稿时间： | 2009-05-08 |
A Blind Detection Method for Permuted Image Based on Finite-Difference |
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| WANG Wei,FANG Yong. A Blind Detection Method for Permuted Image Based on Finite-Difference[J]. Acta Electronica Sinica, 2010, 38(10): 2268-2272 |
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| Authors: | WANG Wei FANG Yong |
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| Affiliation: | WANG Wei,FANG Yong(School of Communication and Information Engineering,Shanghai University,Shanghai 200072,China) |
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| Abstract: | A novel blind detection algorithm based on finite-difference for interpolation permuted image was proposed in this paper.The periodic property of difference sequence was detected by finite-difference for interpolated signal,according to the periodic property,the various interpolation factor could be identified.The algorithm has simple principle and small computational load.Simulation results show a high detection accuracy on the permuted image with various interpolation operations.The proposed algorithm ind... |
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| Keywords: | permuted image interpolation detection finite-difference periodic property blind authentication |
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