Display device on/off detection methods and apparatus
First Claim
1. A display activity detector comprising:
- memory including computer readable instructions; and
a processor to execute the instructions to at least;
extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device;
compute a metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames; and
compare the metric to a threshold to determine whether the monitored media device is ON or OFF.
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Abstract
Display device ON/OFF detection methods and apparatus are disclosed. Example display activity detectors disclosed herein are to extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device Disclosed example display activity detectors are also to compute a distance metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames. Disclosed example display activity detectors are further to compare the distance metric to a threshold to determine whether the monitored media device is ON or OFF.
186 Citations
20 Claims
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1. A display activity detector comprising:
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memory including computer readable instructions; and a processor to execute the instructions to at least; extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device; compute a metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames; and compare the metric to a threshold to determine whether the monitored media device is ON or OFF. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An article of manufacture comprising at least one computer readable storage device or storage disk including computer readable instructions that, when executed, cause a processor to at least:
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extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device; compute a metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames; and compare the metric to a threshold to determine whether the monitored media device is ON or OFF. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method comprising:
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extracting regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device; computing, by executing an instruction with at least one processor, a metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames; and comparing, by executing an instruction with the at least one processor, the metric to a threshold to determine whether the monitored media device is ON or OFF. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification