Integrated RFID and video tracking system

A method of calibrating an RF location determination system in a surveillance area, comprising:

• 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 facilitates a reduction in a difference between the first and second location coordinates of the object.

A method of determining a location coordinate of an RF transmitter, comprising:

• 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.