Hello, 

This may of interest to members of this group. A Québec tech research and 
development org has recently patented a method for detecting video copies. 

"A method to detect video copying based on content. The method comprises 
providing a set of reference data elements derived from a set of reference 
video frames in a reference video stream; providing a set of query data 
elements derived from a set of query video frames in a query video stream, each 
of the query data elements having a corresponding query data element 
identifier; associating with each of the reference data elements a fingerprint 
selected from among the query data element identifiers; and determining a 
similarity measure for the query video stream relative to the reference video 
stream by a comparison of the query data element identifiers to the 
fingerprints."

More info:

http://www.google.com/patents/US8671109

--
Catherine Roy
www.catherine-roy.net

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