Methods and apparatus for audience measurement using global signature representation and matching
First Claim
1. A method to determine a time offset between a first media signature comprising a first sequence of first data pairs and a second media signature comprising a second sequence of second data pairs, the method comprising:
- comparing, using a processor, each first data pair in the first sequence with each second data pair in the second sequence to determine a respective time difference between each first data pair and second data pair combination;
determining, using the processor, a histogram comprising a plurality of bins representative of a plurality of determined time differences, the plurality of determined time differences comprising each respective time difference determined between each first data pair and second data pair combination, each respective bin of the histogram representing a respective window of time differences and having a respective value representative of a number of the plurality of determined time differences lying within the respective window of time differences represented by the respective bin; and
selecting at least one bin of the histogram to correspond to the time offset between the first signature and the second signature.
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Accused Products
Abstract
Disclosed example methods to determine a time offset between a first media content signature comprising a first sequence of first data pairs and a second media content signature comprising a second sequence of second data pairs include determining a histogram comprising a plurality of bins representative of a plurality of determined time differences. The plurality of determined time differences include each respective time difference determined between each first data pair and second data pair combination. Each respective bin of the histogram represents a respective window of time differences and has a respective value representative of a number of the plurality of determined time differences lying within the respective window of time differences represented by the respective bin. Such disclosed example methods also include selecting at least one bin of the histogram to correspond to the time offset between the first signature and the second signature.
17 Citations
20 Claims
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1. A method to determine a time offset between a first media signature comprising a first sequence of first data pairs and a second media signature comprising a second sequence of second data pairs, the method comprising:
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comparing, using a processor, each first data pair in the first sequence with each second data pair in the second sequence to determine a respective time difference between each first data pair and second data pair combination; determining, using the processor, a histogram comprising a plurality of bins representative of a plurality of determined time differences, the plurality of determined time differences comprising each respective time difference determined between each first data pair and second data pair combination, each respective bin of the histogram representing a respective window of time differences and having a respective value representative of a number of the plurality of determined time differences lying within the respective window of time differences represented by the respective bin; and selecting at least one bin of the histogram to correspond to the time offset between the first signature and the second signature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tangible machine readable storage device or storage disk comprising machine readable instructions which, when executed, cause a machine to at least:
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compare each first data pair in a first media signature comprising a first sequence of first data pairs with each second data pair in a second media signature comprising a second sequence of second data pairs to determine a respective time difference between each first data pair and second data pair combination; determine a histogram comprising a plurality of bins representative of a plurality of determined time differences, the plurality of determined time differences comprising each respective time difference determined between each first data pair and second data pair combination, each respective bin of the histogram representing a respective window of time differences and having a respective value representative of a number of the plurality of determined time differences lying within the respective window of time differences represented by the respective bin; and select at least one bin of the histogram to correspond to a time offset between the first signature and the second signature. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus comprising:
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a processor to; compare each first data pair in a first media signature comprising a first sequence of first data pairs with each second data pair in a second media signature comprising a second sequence of second data pairs to determine a respective time difference between each first data pair and second data pair combination; determine a histogram comprising a plurality of bins representative of a plurality of determined time differences, the plurality of determined time differences comprising each respective time difference determined between each first data pair and second data pair combination, each respective bin of the histogram representing a respective window of time differences and having a respective value representative of a number of the plurality of determined time differences lying within the respective window of time differences represented by the respective bin; and select at least one bin of the histogram to correspond to a time offset between the first signature and the second signature; and a memory to store the histogram. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification