Integrated RFID and video tracking system
First Claim
1. A surveillance system comprising:
- a video surveillance system that identifies a visual-object based on image information provided by one or more cameras,an RF surveillance system that identifies an RF-object based on reception information provided by a plurality of receivers, andan object linker, operably coupled to the video surveillance system and the RF surveillance system, that is configured to link the visual-object to the RF-object,wherein;
the video surveillance system is configured to determine a first location coordinate corresponding to the visual-object, andthe RF surveillance system is configured to determine a second location coordinate corresponding to the RF-object, andthe surveillance system further includes;
a calibration module, operably coupled to the video surveillance system and the RF surveillance system that is configured to facilitate a reduction in a difference between the first location coordinate and the second location coordinate.
1 Assignment
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Accused Products
Abstract
A video surveillance system is integrated with an RFID tracking system. The calibration of the RFID tracking system is enhanced by using information provided by the video surveillance system. Optionally, the calibration of the video surveillance system may be enhanced by using information provided by the RFID tracking system. Calibration of the RFID tracking system is facilitated by placing RFID tags at visually apparent locations in a surveillance area and using the location information determined from the video surveillance system to determine appropriate correction factors for use in subsequent RFID location determinations. Dynamic performance is also calibrated by placing RFID tags on visually apparent moving targets and using the location information determined from the video surveillance system to determine the parameters used to qualify subsequent RFID location estimates of moving targets.
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Citations
27 Claims
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1. A surveillance system comprising:
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a video surveillance system that identifies a visual-object based on image information provided by one or more cameras, an RF surveillance system that identifies an RF-object based on reception information provided by a plurality of receivers, and an object linker, operably coupled to the video surveillance system and the RF surveillance system, that is configured to link the visual-object to the RF-object, wherein; the video surveillance system is configured to determine a first location coordinate corresponding to the visual-object, and the RF surveillance system is configured to determine a second location coordinate corresponding to the RF-object, and the surveillance system further includes; a calibration module, operably coupled to the video surveillance system and the RF surveillance system that is configured to facilitate a reduction in a difference between the first location coordinate and the second location coordinate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of calibrating an RF location determination system in a surveillance area, comprising:
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attaching an RFID tag to a visually identifiable object, determining a first location coordinate of the object based on an appearance of the object in a scene provided by a video camera, obtaining reception information from a plurality of receivers in response to a transmission from the RFID tag, determining a second location coordinate of the object based on the reception information from the plurality of receivers, determining one or more adjustment parameters that facilitate a reduction in a difference between the first and second location coordinates of the object. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of determining a location coordinate of an RF transmitter, comprising:
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receiving a signal from the RF transmitter at a plurality of receivers, and determining the location coordinate of the RF transmitter based on reception information from the plurality of receivers and based on adjustment parameters, wherein; the adjustment parameters are based on one or more differences between first location determinations and second location determination of a target transmitter, the first location determinations are based on visual images of the target transmitter, and the second location determinations are based on prior reception information from the plurality of receivers corresponding to transmissions from the target transmitter. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification