Dr. Nagaraj G. Cholli, G. P. M. B. “A Comprehensive Survey on Computer-Vision Object Detection, Segmentation, Tracking, and Feature Extraction”. International Journal of Advanced Science and Technology, Vol. 28, no. 16, Dec. 2019, pp. 1490 -1, http://sersc.org/journals/index.php/IJAST/article/view/2115.