Method and Apparatus for Content Item Signature Matching
First Claim
1. An apparatus for content item signature matching comprising:
- a database (103) comprising signatures for a plurality of content items;
means for determining a match likelihood indication (105) for each of the plurality of content items, the match likelihood indication of each content item being indicative of a likelihood of a match between the content item and an unknown signature;
means for receiving (111) a query signature associated with a content item;
search means (113) for searching the database (103) for a matching signature to the query signature; and
wherein the search means (113) is operable to search the database (103) in response to the match likelihood indication of the plurality of content items.
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Abstract
An apparatus for content item signature matching comprises a database (103) which has signatures for a plurality of content items. A likelihood processor (105) determines a match likelihood indication for the content items where the match likelihood indication is indicative of a likelihood of a match between the content item and an unknown signature. An interface (111) receives a query signature associated with a content item and in response a search processor (113) searches the database (103) for a matching signature to the query signature. The search processor (113) is operable to search the database in response to the match likelihood indication of the plurality of content items. In particular the database (103) may be ordered in order of decreasing probability of a match and the search processor (113) may search the database in this order. Hence, the probability of an early match is increased and the average search time is reduced.
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Citations
18 Claims
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1. An apparatus for content item signature matching comprising:
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a database (103) comprising signatures for a plurality of content items; means for determining a match likelihood indication (105) for each of the plurality of content items, the match likelihood indication of each content item being indicative of a likelihood of a match between the content item and an unknown signature; means for receiving (111) a query signature associated with a content item; search means (113) for searching the database (103) for a matching signature to the query signature; and wherein the search means (113) is operable to search the database (103) in response to the match likelihood indication of the plurality of content items. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of content item signature matching in a database (103) comprising signatures for a plurality of content items, the method comprising the steps of:
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determining a match likelihood indication for each of the plurality of content items, the match likelihood indication of each content item being indicative of a likelihood of a match between the content item and an unknown signature; receiving a query signature associated with a content item; searching the database (103) for a matching signature to the query signature in response to the match likelihood indication of the signatures of the plurality of content items. - View Dependent Claims (17, 18)
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Specification