Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 5, 2006
Patent Application Number
10990633
Date Filed
November 17, 2004
Patent Primary Examiner
Patent abstract
An improved method and arrangement for detecting a watermark in an information (e.g. image or video) signal are disclosed. The detection is more reliable and less vulnerable to image processing by partitioning the image into a sequence of blocks having a predetermined size, accumulating the blocks, computing a value indicative of the correlation of the accumulated blocks and the watermark having the predetermined size, and detecting whether the correlation value is larger than a predetermined threshold.
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