Network surveillance system
First Claim
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1. A method for estimating the activity topology of a set of sensed data windows, each of the sensed data windows related to a corresponding sensed region, the method including the steps:
- determining a subset of sensed data windows that are not connected by comparing sensed data windows pair wise from the set of sensed data windows, the pair wise comparison including determining whether a pair of sensed data windows does not have overlapping sensed regions by;
determining a first occupancy measure for a first sensed data window and a second occupancy measure for a second sensed data window, the first and second sensed data windows comprising the pair of sensed data windows, andcomparing the first and second occupancy measures by forming an occupancy vector corresponding to a first sensed data window sequence associated with the first sensed data window and a second occupancy vector corresponding to a second sensed data window sequence associated with the second sensed data window and comparing corresponding elements of the first and second occupancy vectors; and
excluding the subset of sensed data windows from the set of sensed data windows.
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Abstract
A method for estimating the activity topology of a set of sensed data windows is described. Each of the sensed data windows related to a corresponding sensed region. The method includes the steps of determining a subset of sensed data windows that are not connected; and excluding the subset of sensed data windows from the set of sensed data windows. In one embodiment, the sensed data windows corresponding to image windows such as would be provided by a visual surveillance system.
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Citations
28 Claims
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1. A method for estimating the activity topology of a set of sensed data windows, each of the sensed data windows related to a corresponding sensed region, the method including the steps:
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determining a subset of sensed data windows that are not connected by comparing sensed data windows pair wise from the set of sensed data windows, the pair wise comparison including determining whether a pair of sensed data windows does not have overlapping sensed regions by; determining a first occupancy measure for a first sensed data window and a second occupancy measure for a second sensed data window, the first and second sensed data windows comprising the pair of sensed data windows, and comparing the first and second occupancy measures by forming an occupancy vector corresponding to a first sensed data window sequence associated with the first sensed data window and a second occupancy vector corresponding to a second sensed data window sequence associated with the second sensed data window and comparing corresponding elements of the first and second occupancy vectors; and excluding the subset of sensed data windows from the set of sensed data windows. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 28)
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14. A network surveillance system including:
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a network of sensors, each sensor providing one or more sensed data windows each corresponding to a sensed region and forming in total a set of sensed data windows; and data processing means to; determine a subset of sensed data windows that are not connected by comparing sensed data windows pair wise from the set of sensed data windows, the pair wise comparison including determining whether a pair of sensed data windows does not have overlapping sensed regions by; determining a first occupancy measure for a first sensed data window and a second occupancy measure for a second sensed data window, the first and second sensed data windows comprising the pair of sensed data windows, and comparing the first and second occupancy measures by forming an occupancy vector corresponding to a first sensed data window sequence associated with the first sensed data window and a second occupancy vector corresponding to a second sensed data window sequence associated with the second sensed data window and comparing corresponding elements of the first and second occupancy vectors; and exclude the subset of sensed data windows from the set of sensed data windows. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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15. A non-transitory program storage device readable by machine, tangibly embodying a program of instructions to perform method steps for estimating the activity topology of a set of sensed data windows, each of the sensed data windows related to a corresponding sensed region, the method steps including:
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determining a subset of sensed data windows that are not connected by comparing sensed data windows pair wise from the set of sensed data windows, the pair wise comparison including determining whether a pair of sensed data windows does not have overlapping sensed regions by; determining a first occupancy measure for a first sensed data window and a second occupancy measure for a second sensed data window, the first and second sensed data windows comprising the pair of sensed data windows, and comparing the first and second occupancy measures by forming an occupancy vector corresponding to a first sensed data window sequence associated with the first sensed data window and a second occupancy vector corresponding to a second sensed data window sequence associated with the second sensed data window and comparing corresponding elements of the first and second occupancy vectors; and excluding the subset of sensed data windows from the set of sensed data windows.
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Specification