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Exposing digital image forgeries by detecting discrepancies in motion blur

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Exposing digital image forgeries by detecting discrepancies in motion blur

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Title: Exposing digital image forgeries by detecting discrepancies in motion blur
Author: Kakar, Pravin; Sudha, N.; Ser, Wee
Copyright year: 2011
Abstract: The widespread availability of photo manipulation software has made it unprecedentedly easy to manipulate images for malicious purposes. Image splicing is one such form of tampering. In recent years, researchers have proposed various methods for detecting such splicing. In this paper, we present a novel method of detecting splicing in images, using discrepancies in motion blur. We use motion blur estimation through image gradients in order to detect inconsistencies between the spliced region and the rest of the image. We also develop a new measure to assist in inconsistent region segmentation in images that contain small amounts of motion blur. Experimental results show that our technique provides good segmentation of regions with inconsistent motion blur. We also provide quantitative comparisons with other existing blur-based techniques over a database of images. It is seen that our technique gives significantly better detection results.
Subject: DRNTU::Engineering::Computer science and engineering::Computing methodologies::Image processing and computer vision.
Type: Working Paper
Series/ Journal Title: IEEE transactions on multimedia
School: Institute for Media Innovation
Rights: © 2011 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: [DOI: http://dx.doi.org/10.1109/TMM.2011.2121056].
Version: Accepted version

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