Exploring DCT Coefficient Quantization Effects for Local Tampering Detection
文献类型：期刊论文
| 作者 | Wang, Wei ; Dong, Jing; Tan, Tieniu
|
| 刊名 | IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
 |
| 出版日期 | 2014-10-01 |
| 卷号 | 9期号:10页码:1653-1666 |
| 关键词 | Image forensics local tampering detection double quantization graph cut |
| 英文摘要 | In this paper, we focus on local image tampering detection. For a JPEG image, the probability distributions of its DCT coefficients will be disturbed by tampering operation. The tampered region and the unchanged region have different distributions, which is an important clue for locating tampering. Based on the assumption of Laplacian distribution of unquantized ac DCT coefficients, these two distributions as well as the size of tampered region can be estimated so that the probability of each DCT block being tampered is obtained. More accurate localization results could be got when we consider the prior knowledge of common tampered regions. We also design three kinds of features that can distinguish truly tampered regions from the false ones to reduce false alarm. For a tampered image which is saved in lossless compressed format, we also propose the specialized approach, which employs the quantization noise of high-frequency DCT coefficient, to improve the tampering localization performance. Extensive experiments on large scale databases prove the effectiveness of our proposed method and demonstrate that our method is suitable for locating tampered regions with different scales. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Computer Science, Theory & Methods ; Engineering, Electrical & Electronic |
| 研究领域[WOS] | Computer Science ; Engineering |
| 关键词[WOS] | EXPOSING DIGITAL FORGERIES ; INTRINSIC FINGERPRINTS ; IMAGES ; COMPRESSION ; AUTHENTICATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000342383700004 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/3794]  |
| 专题 | 自动化研究所_智能感知与计算研究中心 |
| 作者单位 | Chinese Acad Sci, Inst Automat, Ctr Res Intelligent Percept & Comp, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wei,Dong, Jing,Tan, Tieniu. Exploring DCT Coefficient Quantization Effects for Local Tampering Detection[J]. IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY,2014,9(10):1653-1666. |
| APA | Wang, Wei,Dong, Jing,&Tan, Tieniu.(2014).Exploring DCT Coefficient Quantization Effects for Local Tampering Detection.IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY,9(10),1653-1666. |
| MLA | Wang, Wei,et al."Exploring DCT Coefficient Quantization Effects for Local Tampering Detection".IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY 9.10(2014):1653-1666. |
入库方式： OAI收割
来源：自动化研究所
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