Assignee
YU QIFENG
CN3 patents
Top patents by PatentIndex Score
US8405716B2Mar 26, 2013
Folding optical path transfer videometrics method for measuring the three-dimensional position and attitude of non-intervisible objects
YU QIFENG22 citations86
US9057609B2Jun 16, 2015
Ground-based camera surveying and guiding method for aircraft landing and unmanned aerial vehicle recovery
YU QIFENG18 citations80
US9095431B2Aug 4, 2015
Invasive cardiac valve
YU QIFENG14 citations79