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专利名称：Method and device for assessing the
presence of a watermark in a video
发明人：Cesar Burini,Gwenael Doerr,Severine Baudry申请号：US14324161申请日：20140705公开号：US09384521B2公开日：20160705
专利附图：
摘要：The invention relates to a method for assessing the presence of a watermark ina video wherein the video comprises at least a sequence of frames. The methodcomprises for at least one frame among one of the sequences of frames the steps of
computing a set of axial cross-correlation values, wherein each axial cross-correlationvalue corresponds to a correlation between the frame and a reference watermark shiftedalong a spatial horizontal axis; obtaining a detection score by computing a weighted sumof values output by a function applied to said axial cross-correlation values; assessing thepresence of a watermark according to the detection score. Such method is particularlywell adapted to the detection of disparity coherent watermark but is compliant with anywatermarking technique. A device implementing the method is further disclosed.
申请人：THOMSON LICENSING
地址：Issy de Moulineaux FR
国籍：FR
代理机构：Tutunjian & Bitetto, P.C.
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