An Approach for Automatic Orientation of Big Point Clouds from the Stationary Scanners Based on the Spherical Targets
YAO Jili, MA Ning, JIA Xiangyang, XU Guangpeng, XIE Jianchun
Acta Geodaetica et Cartographica Sinica . 2015, (4): 431 -437 .  DOI: 10.11947/j.AGCS.2015.20130357