CPC G06T 7/277 (2017.01) [G01S 5/0294 (2013.01); G01S 13/867 (2013.01); G06T 7/136 (2017.01); G06T 7/215 (2017.01)] | 22 Claims |
1. A device configured to detect an occupant entering or exiting a space, the device comprising:
a detection circuit configured to detect the occupant in a coverage area of the space, generate one or more signals indicating a location of the occupant in the coverage area, and generate an occupant map that indicates the location of the occupant; and
a control circuit comprising a tracking filter, wherein the control circuit is configured to:
receive the one or more signals from the detection circuit;
determine preliminary coordinates of the occupant in the occupant map based on the one or more signals received from the detection circuit;
adjust the preliminary coordinates using the tracking filter to determine the location of the occupant in the occupant map;
determine movements of the occupant through a plurality of zones of the coverage area; and
determine whether the occupant has entered or exited the space based on the movements of the occupant through the plurality of zones of the coverage area.
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