Audio/Video Fingerprint Search Accuracy Using Multiple Search Combining
First Claim
1. A method for use in identifying a segment of audio and/or video information, comprisingobtaining a query fingerprint at each of a plurality of spaced-apart time locations in said segment,searching fingerprints in a database of fingerprints for a potential match for each such query fingerprint,obtaining a confidence level of a potential match to a found fingerprint in the database for each such query fingerprint, wherein the confidence level is a function of the relative timing relationship between the time location of a query fingerprint and the time location of a found fingerprint, andcombining the results of searching for potential matches either to identify said segment of audio and/or video information or to conclude that said segment does not belong to the database, wherein each potential match result is weighted by a respective confidence level.
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Abstract
A method for use in identifying a segment of audio and/or video information comprises obtaining a query fingerprint at each of a plurality of spaced-apart time locations in said segment, searching fingerprints in a database for a potential match for each such query fingerprint, obtaining a confidence level of a potential match to a found fingerprint in the database for each such query fingerprint, and combining the results of searching for potential matches, wherein each potential match result is weighted by respective confidence level. A confidence level may be a function of at least one or both of (1) a measure of difference between a query fingerprint and a found fingerprint and (2) the relative timing relationship between the time location of a query fingerprint and the time location of a found fingerprint.
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Citations
22 Claims
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1. A method for use in identifying a segment of audio and/or video information, comprising
obtaining a query fingerprint at each of a plurality of spaced-apart time locations in said segment, searching fingerprints in a database of fingerprints for a potential match for each such query fingerprint, obtaining a confidence level of a potential match to a found fingerprint in the database for each such query fingerprint, wherein the confidence level is a function of the relative timing relationship between the time location of a query fingerprint and the time location of a found fingerprint, and combining the results of searching for potential matches either to identify said segment of audio and/or video information or to conclude that said segment does not belong to the database, wherein each potential match result is weighted by a respective confidence level.
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5-10. -10. (canceled)
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15-20. -20. (canceled)
Specification