Muchan, Kanchana, Chananchida Surija, Wayuda Wachum, and Titipong Kaewlek. “Development of a learning program for basic digital image processing”. The Thai Journal of Radiological Technology 50, no. 1 (December 26, 2025): 79–88. accessed September 21, 2026. https://he02.tci-thaijo.org/index.php/tjrt/article/view/279180.