Methods and apparatus to count persons in a monitored environment

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United States of America Patent

PATENT NO 8411963
APP PUB NO 20100195865A1
SERIAL NO

12537955

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Abstract

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Methods and apparatus to count persons in a monitored environment are disclosed. An example apparatus to count the number of people in a monitored environment is described, which includes an image sensor having a plurality of pixels, a pseudorandom number generator to generate pseudorandom coordinates, a reader to read first pixel data generated by a first pixel of the image sensor at a first time, the first pixel corresponding to the pseudorandom coordinates, a comparator to compare the first pixel data with second pixel data generated by the first pixel at a second time different from the first time to generate a change value, and a counter configured to generate a count of persons based at least on the change value.

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Patent Owner(s)

  • THE NIELSEN COMPANY (US), LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Luff, Robert A Wittman, US 33 1598

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