Matching data objects by matching derived fingerprints
A fingerprint and database technology, applied in the field of matching fingerprints
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[0035] see figure 1, shows a functional block diagram divided into the client terminal 100 and the database server terminal 200 . On the client side, the object is received by the fingerprint extraction module 110 and a query fingerprint F is calculated for the object. The query fingerprint F is passed on the one hand to the statistical module 120 and on the other hand to the database server 200 . The statistics module 120 determines the measure of the randomness / correlation of the query fingerprint F (eg it determines the internal correlation) and passes this information to the threshold decider 130 . The threshold decider 130 adaptively sets the threshold level T based on the information from the module 120 and transmits the threshold level T to the database server side 200 .
[0036] At the database server side 200, the matching module 210 receives the query fingerprint F from the client 100 and searches the database of known fingerprints for the fingerprint that best mat...
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