Watermarking of compressed video based on DCT coefficients and watermark preprocessing

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dc.contributor.authorBouchama, Samira
dc.contributor.authorHamami, Latifa
dc.contributor.authorAliane, Hassina
dc.date.accessioned2013-11-24T15:25:30Z
dc.date.available2013-11-24T15:25:30Z
dc.date.issued2010-12
dc.description.abstractConsidering the importance of watermarking of compressed video, several watermarking methods have been proposed for authentication, copyrights protection or simply for a secure data carrying through the Internet. Applied to the H.264/AVC video standard, in most of cases, these methods are based on the use of the quantized DCT coefficients often experimentally or randomly selected. In this paper, we introduce a watermarking method based on the DCT coefficients using two steps: the first one consists in a watermark pre-processing based on similarity measurement which can allow to adapt the best the watermark to the carrying coefficients of low frequencies. A second step takes advantage from the coefficients of high frequencies in order to maintain the video quality and reduce the bitrate. Results show that it is possible to achieve a very good compromise between video quality, embedding capacity and bitrate.fr_FR
dc.identifier.isrnCERIST-DTISI/RR--10-000000022--dzfr_FR
dc.identifier.urihttp://dl.cerist.dz/handle/CERIST/319
dc.publisherCERIST
dc.relation.ispartofRapports de recherche internes
dc.relation.ispartofseriesRapports de recherche internes
dc.relation.placeAlger
dc.subjectVideo watermarkingfr_FR
dc.subjectH264/AVC standardfr_FR
dc.subjectQuantized DCT coefficientsfr_FR
dc.subjectIntercorrelation functionfr_FR
dc.titleWatermarking of compressed video based on DCT coefficients and watermark preprocessingfr_FR
dc.typeTechnical Report
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