Automatic detection of face with mask to prevent COVID contagion, using LBP algorithm embedded in Rasp-Berry Pi and use of audible alert. Nexo Revista Científica [Internet]. 2024 Dec. 31 [cited 2026 Jun. 24];37(2):103-21. Available from: https://www.camjol.info/index.php/NEXO/article/view/18768