AUTOMATICALLY DETERMINING FIELD OF VIEW OVERLAP AMONG MULTIPLE CAMERAS
First Claim
1. A method for automatically determining field of view overlap among multiple cameras as a function of the temporal overlap of object tracks, the method comprising:
- determining values of similarity for potential pairings of each of a plurality of object tracks of movements of objects over time through a field-of-view of a first camera with each of a plurality of object tracks of movements of objects over time through a field-of-view of a second camera;
assigning into pairs each of the object tracks within the first camera field-of-view to ones each of the object tracks within the second camera field-of-view that each have a highest determined similarity value of the similarity values determined for their respective potential pairings;
determining that the assigned object track pairs correspond to overlapping portions of the fields-of-view of the first and second paired cameras if portions of each of the assigned object track pairs have a temporally overlapping period of time;
determining scene entry points on each of the tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at a beginning of the temporally overlapping period of time;
determining scene exit points on each of tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at an ending of the temporally overlapping period of time; and
defining boundary lines for the overlapping fields-of-view portions within their corresponding first and second camera fields-of-view as a function of the determined entry and exit points in their respective fields-of-view.
2 Assignments
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Accused Products
Abstract
Field of view overlap among multiple cameras are automatically determined as a function of the temporal overlap of object tracks determined within their fields-of-view. Object tracks with the highest similarity value are assigned into pairs, and portions of the assigned object track pairs having a temporally overlapping period of time are determined. Scene entry points are determined from object locations on the tracks at a beginning of the temporally overlapping period of time, and scene exit points from object locations at an ending of the temporally overlapping period of time. Boundary lines for the overlapping fields-of-view portions within the corresponding camera fields-of-view are defined as a function of the determined entry and exit points in their respective fields-of-view.
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Citations
20 Claims
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1. A method for automatically determining field of view overlap among multiple cameras as a function of the temporal overlap of object tracks, the method comprising:
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determining values of similarity for potential pairings of each of a plurality of object tracks of movements of objects over time through a field-of-view of a first camera with each of a plurality of object tracks of movements of objects over time through a field-of-view of a second camera; assigning into pairs each of the object tracks within the first camera field-of-view to ones each of the object tracks within the second camera field-of-view that each have a highest determined similarity value of the similarity values determined for their respective potential pairings; determining that the assigned object track pairs correspond to overlapping portions of the fields-of-view of the first and second paired cameras if portions of each of the assigned object track pairs have a temporally overlapping period of time; determining scene entry points on each of the tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at a beginning of the temporally overlapping period of time; determining scene exit points on each of tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at an ending of the temporally overlapping period of time; and defining boundary lines for the overlapping fields-of-view portions within their corresponding first and second camera fields-of-view as a function of the determined entry and exit points in their respective fields-of-view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a processing unit in communication with a computer readable memory and a computer-readable storage medium; wherein the processing unit executes program instructions stored on the computer-readable storage medium via the computer readable memory and thereby; determines values of similarity for potential pairings of each of a plurality of object tracks of movements of objects over time through a field-of-view of a first camera with each of a plurality of object tracks of movements of objects over time through a field-of-view of a second camera; assigns into pairs each of the object tracks within the first camera field-of-view to ones each of the object tracks within the second camera field-of-view that each have a highest determined similarity value of the similarity values determined for their respective potential pairings; determines that the assigned object track pairs correspond to overlapping portions of the fields-of-view of the first and second paired cameras if portions of each of the assigned object track pairs have a temporally overlapping period of time; determines scene entry points on each of the tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at a beginning of the temporally overlapping period of time; determines scene exit points on each of tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at an ending of the temporally overlapping period of time; and defines boundary lines for the overlapping fields-of-view portions within their corresponding first and second camera fields-of-view as a function of the determined entry and exit points in their respective fields-of-view. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A computer program product for automatically determining field of view overlap among multiple cameras as a function of the temporal overlap of object tracks, the computer program product comprising:
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a computer readable hardware storage device having computer readable program code embodied therewith, the computer readable program code comprising instructions for execution by a computer processing unit that cause the computer processing unit to; determine values of similarity for potential pairings of each of a plurality of object tracks of movements of objects over time through a field-of-view of a first camera with each of a plurality of object tracks of movements of objects over time through a field-of-view of a second camera; assign into pairs each of the object tracks within the first camera field-of-view to ones each of the object tracks within the second camera field-of-view that each have a highest determined similarity value of the similarity values determined for their respective potential pairings; determine that the assigned object track pairs correspond to overlapping portions of the fields-of-view of the first and second paired cameras if portions of each of the assigned object track pairs have a temporally overlapping period of time; determine scene entry points on each of the tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at a beginning of the temporally overlapping period of time; determine scene exit points on each of tracks of the assigned object track pairs corresponding to the overlapping fields-of-view portions within their fields-of-view as locations of the object on the each of said tracks at an ending of the temporally overlapping period of time; and define boundary lines for the overlapping fields-of-view portions within their corresponding first and second camera fields-of-view as a function of the determined entry and exit points in their respective fields-of-view. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification