Vorapatratorn, Surapol, Atiwong Suchato, and Proadpran Punyabukkana. “Fast obstacle detection system for the blind using depth image and machine learning”. Engineering and Applied Science Research 48, no. 5 (July 9, 2021): 593–603. accessed April 7, 2025. https://ph01.tci-thaijo.org/index.php/easr/article/view/242952.