Kongsiriwattana ว., Whangsirikunchok พ., & Chantigo ว. (2021). Student Class Attendance and Interest Assessment System with Facial Expression Detection via Webcam. Journal of Science Ladkrabang, 30(2), 42–57. Retrieved from https://li01.tci-thaijo.org/index.php/science_kmitl/article/view/248748