Methods and apparatus to monitor environments
DCFirst Claim
1. A tangible machine readable storage medium comprising instructions that, when executed, cause a machine to at least:
- execute, in connection with a first frame of data, a three-dimensional recognition analysis on an object detected in an environment within a threshold distance from a sensor;
store a location of the object; and
in response to detecting that the first object has moved outside the threshold distance from the sensor in connection with a second frame subsequent to the first frame;
execute a two-dimensional recognition analysis on the object in the second frame; and
use the stored location of the object as a focal point for the two-dimensional analysis.
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Abstract
Methods and apparatus to monitor environments are disclosed. An example method includes analyzing a plurality of three-dimensional data points having respective depth values representative of distances between a sensor and respective objects of an environment; when a first set of the three-dimensional data points has a first depth value less than a threshold, executing a first type of recognition analysis on a first area of the environment corresponding to the first set of the three-dimensional data points; and when a second set of the three-dimensional data points has a second depth value greater than the threshold, executing a second type of recognition analysis different than the first type of recognition analysis on a second area of the environment corresponding to the second set of the three-dimensional data points.
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Citations
21 Claims
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1. A tangible machine readable storage medium comprising instructions that, when executed, cause a machine to at least:
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execute, in connection with a first frame of data, a three-dimensional recognition analysis on an object detected in an environment within a threshold distance from a sensor; store a location of the object; and in response to detecting that the first object has moved outside the threshold distance from the sensor in connection with a second frame subsequent to the first frame; execute a two-dimensional recognition analysis on the object in the second frame; and use the stored location of the object as a focal point for the two-dimensional analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An audience measurement device, comprising:
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a first data analyzer to execute a first recognition analysis on three-dimensional data representative of a first object within a threshold distance from a three-dimensional sensor; a second data analyzer to execute a second recognition analysis on two-dimensional data representative of a second object outside the threshold distance from the three-dimensional sensor; and a counter to combine a first detection of a first person provided by the first data analyzer and a second detection of a second person provided by the second data analyzer to generate a people count for an environment, wherein at least one of the first data analyzer, the second data analyzer or the counter is implemented via a logic circuit. - View Dependent Claims (10, 11, 12, 13)
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14. A method comprising:
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executing, via a processor, in connection with a first frame of data, a three-dimensional recognition analysis on an object detected in an environment within a threshold distance from a sensor; storing a location of the object; and in response to detecting that the first object has moved outside the threshold distance from the sensor in a second frame subsequent to the first frame; executing, via the processor, a two-dimensional recognition analysis on the object in the second frame; and using the stored location of the object as a focal point for the two-dimensional analysis. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification