T.Mangayarkarasi, S. Sai Anusha, and P.R.Pranavikha. “Covid-19 Mask Detection Using Matlab Based Image Processing”. Elementary Education Online 20, no. 1 (March 10, 2021): 5016–5023. Accessed January 15, 2025. https://ilkogretim-online.org/index.php/pub/article/view/2103.