Calibration of Wi-Fi localization from video localization

摘要

In some implementations, video camera networks can be used to track people or objects and determine their locations. In some implementations, location accuracy better than one meter can be achieved using video cameras. According to some implementations, Wi-Fi localization and video localization systems can be fused together to perform calibration. In some implementations, by using the video network to continuously update the Wi-Fi localization calibration database, Wi-Fi location accuracy can be improved.

主权项

1. A method comprising:
obtaining, from a transmitter associated with a movable target, wireless signal pattern data at a plurality of access points corresponding to a plurality of fixed locations, the wireless signal pattern data including a signal strength measured by the plurality of access points at the plurality of fixed locations; determining a wireless feature vector associated with the movable target, the wireless feature vector being determined based on the wireless signal pattern data; obtaining video data associated with the movable target; calculating occupancy probabilities of the movable target based on the video data; estimating a location of the movable target based on the wireless feature vector and the occupancy probabilities; and updating calibration data for the plurality of access points corresponding to the plurality of fixed locations based on the estimated location of the movable target.