Farou, Brahim, et al. “Novel Approach for Detection and Removal of Moving Cast Shadows Based on RGB, HSV and YUV Color Spaces”. COMPUTING AND INFORMATICS, vol. 36, no. 4, Nov. 2017, pp. 837-56, https://www.cai.sk/ojs/index.php/cai/article/view/2017_4_837.