Velasco, N., D. Rivas L., and E. E. Galarza. “Object Detection and Comparison of Different Shapes and Materials Using Kinect”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 1-5, Apr. 2017, pp. 97-100, https://jtec.utem.edu.my/jtec/article/view/1843.