US 11,893,827 B2
Systems and methods of detecting mask usage
Alexis B. Ehrlich, Boca Raton, FL (US)
Assigned to Sensormatic Electronics, LLC, Boca Raton, FL (US)
Filed by Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed on Mar. 16, 2021, as Appl. No. 17/203,088.
Prior Publication US 2022/0300727 A1, Sep. 22, 2022
Int. Cl. G06T 7/00 (2017.01); G06V 40/16 (2022.01); G06V 20/52 (2022.01); G06V 40/10 (2022.01); G08B 21/18 (2006.01)
CPC G06V 40/161 (2022.01) [G06V 20/52 (2022.01); G06V 40/10 (2022.01); G06V 40/171 (2022.01); G08B 21/18 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of detecting mask usage, comprising:
monitoring video frames of one or more video feeds;
detecting a person in at least one video frame of the video frames, the at least one video frame corresponding to a first area of one or more areas;
detecting one or more detected facial features within the at least one video frame via a facial feature detection algorithm;
determining that the one or more detected facial features of the person comprise one or more particular facial features;
determining an occupancy rate of an enforcement area;
determining, in response to the occupancy rate exceeding an occupancy rate threshold, that the person is in violation of a mask wearing rule when the one or more detected facial features comprise the one or more particular facial features; and
generating an alert in response to determining that the person is in violation of the mask wearing rule.