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dc.contributor.authorPankajakshan, Vinod-
dc.contributor.authorDoerr G.-
dc.contributor.authorBora P.K.-
dc.identifier.citationIEEE Transactions on Information Forensics and Security (2009), 4(1): 49-58-
dc.description.abstractMotion coherency has recently been identified as a desirable property for watermarks embedded within video streams in order to withstand temporal frame averaging along the motion axis. Nevertheless, no tool has been proposed to easily evaluate the motion coherency of a given watermarking system. Today, this assessment relies on a computationally expensive procedure, namely, 1) embed a watermark, 2) perform temporal frame averaging, and 3) check for the presence of the watermark. In this article, a novel oracle is designed to detect whether a video stream contains any motion-incoherent component or not. Since such incoherence can be introduced by nonmotion-coherent watermarking algorithms, this tool has proven to be most valuable to distinguish watermarked from nonwatermarked content. The oracle relies on some features extracted from error frames after motion compensation. Experimental results demonstrate the efficiency of the proposed method with uncompressed and compressed video streams. © 2009 IEEE.-
dc.relation.ispartofIEEE Transactions on Information Forensics and Security-
dc.subjectMotion coherency-
dc.subjectVideo watermarking-
dc.titleDetection of motion-incoherent components in video streams-
dc.affiliationPankajakshan, V., Department of Computing, University of Surrey, Guildford GU2 7XH, United Kingdom-
dc.affiliationDoerr, G., University College London, Martlesham IP5 3RE, United Kingdom-
dc.affiliationBora, P.K., Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, North Guwahati, Assam 781 039, India-
dc.description.correspondingauthorPankajakshan, V.; Department of Computing, University of Surrey, Guildford GU2 7XH, United Kingdom; email:
Appears in Collections:Journal Publications [ECE]

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