H.264/AVC Data Hiding Algorithm with a Limitation of the Drift Distortion

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dc.contributor.authorBouchama, Samira
dc.contributor.authorHamami, Latifa
dc.contributor.authorAliane, Hassina
dc.date.accessioned2013-11-20T14:14:59Z
dc.date.available2013-11-20T14:14:59Z
dc.date.issued2012
dc.description.abstractMany data hiding algorithms have been proposed for the latest video codec H.264/AVC, most of them are based on the 4x4 luma DCT coefficients. However, the drift distortion is the main reason which limits the embedding capacity in data hiding algorithms based on DCT coefficients. Few methods have been proposed to compensate or eliminate the error propagation. Though, they are either non-blind, only detectable or need prior knowledge of the encoded blocks and thus cannot be used for real time broadcasting. In this paper we show that it is possible to reduce considerably the error propagation for real time applications. The proposed algorithm exploits the method of watermarking paired-coefficients in each block in order to bring the error to the middle of the block matrix. We evaluate the distortion caused by each paired-coefficients in order to give a watermarking priority to the pairs which introduce the minimum error. The proposed scheme offers a very good compromise between the video distortion, the increase in bitrate and the embedding capacity.fr_FR
dc.identifier.isrnCERIST-DTISI/RR--12-000000031-1--dzfr_FR
dc.identifier.urihttp://dl.cerist.dz/handle/CERIST/259
dc.publisherCERIST
dc.relation.ispartofRapports de recherche internes
dc.relation.ispartofseriesRapports de recherche internes
dc.relation.placeAlger
dc.subjectData hidingfr_FR
dc.subjectH.264/AVCfr_FR
dc.subjectDrift distortionfr_FR
dc.subjectEmbedding capacityfr_FR
dc.subjectReal time applicationfr_FR
dc.titleH.264/AVC Data Hiding Algorithm with a Limitation of the Drift Distortionfr_FR
dc.typeTechnical Report
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