Exposing postprocessed copy–paste forgeries through transform-invariant features

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Exposing postprocessed copy–paste forgeries through transform-invariant features

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dc.contributor.author Kakar, Pravin
dc.contributor.author Sudha, N.
dc.date.accessioned 2012-09-25T09:08:55Z
dc.date.available 2012-09-25T09:08:55Z
dc.date.copyright 2012
dc.date.issued 2012-09-25
dc.identifier.citation Kakar, P., & Sudha, N. (2012). Exposing postprocessed copy–paste forgeries through transform-invariant features. IEEE Transactions on Information Forensics and Security, 7(3), 1018-1028.
dc.identifier.issn 1556-6013
dc.identifier.uri http://hdl.handle.net/10220/8639
dc.description.abstract Image manipulation has become commonplace with growing easy access to powerful computing abilities. One of the most common types of image forgeries is the copy-paste forgery, wherein a region from an image is replaced with another region from the same image. Most prior approaches to finding identical regions suffer from their inability to detect the cloned region when it has been subjected to a geometric transformation. In this paper, we propose a novel technique based on transform-invariant features. These are obtained by using the features from the MPEG-7 image signature tools. Results are provided which show the efficacy of this technique in detecting copy-paste forgeries, with translation, scaling, rotation, flipping, lossy compression, noise addition and blurring. We obtain a feature matching accuracy in excess of 90% across postprocessing operations and are able to detect the cloned regions with a high true positive rate and lower false positive rate than the state of the art.
dc.language.iso en
dc.relation.ispartofseries IEEE transactions on information forensics and security
dc.rights © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/TIFS.2012.2188390].
dc.subject DRNTU::Engineering::Computer science and engineering::Computing methodologies::Image processing and computer vision
dc.title Exposing postprocessed copy–paste forgeries through transform-invariant features
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1109/TIFS.2012.2188390
dc.description.version Accepted version

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