Video frame to frame difference watermarking with drm metadata

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United States of America Patent

PATENT NO 11423506
SERIAL NO

17049258

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Abstract

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A digital watermarking system and method for embedding information in and extracting information from content items, such as video signals, are described. In a method for encoding or embedding information in a content item, a content item including a plurality of frames is accessed in which each of a number of elements within the frames is associated with an inter-frame difference measure representing changes in the element between two frames. Information for embedding in the content item is accessed. Symbols of the information are embedded in the content item by manipulating the inter-frame difference measure of a selected element through a number of frames using an algorithm and the information. The information is used by the algorithm to control the manipulation. The manipulated content item is output as a watermarked content item having the information embedded therein.

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Patent Owner(s)

  • CMT RESEARCH (PTY) LTD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Salotto, Antony Stellenbosch, ZA 1 0

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