Taweepworadej, Wiroj. “An Optimum Number to Determine the Changes of Picture Captured from a Video Camera at A Different Time”. Engineering and Applied Science Research 30, no. 1 (February 28, 2013): 79–90. accessed April 6, 2025. https://ph01.tci-thaijo.org/index.php/easr/article/view/6553.