4Huang H L,Jywe W Y, Liu C H,et al. Development of a no- vel laser-based measuring system for the thread profile of ballscrew [ J ]. Optics and Lasers in Engineering, 2010,48 (10) :1012 - 1018.
5Tsai Z R. Robust Kinect-based guidance and positioning of a muhidirectional robot by Ixg-ab recognition [ J ]. Expert Sys- tems with Applications,2014,41 (4) : 1271 - 1282.
