A High-Speed Target-Free Vision-Based Sensor for Bus Rapid Transit Viaduct Vibration Measurements Using CMT and ORB Algorithms. - Qijun Hu; Songsheng He; Shilong Wang; Yugang Liu; Zutao Zhang; Leping He; Fubin Wang; Qijie Cai; Rendan Shi; Yuan Yang (Sensors, 2017)