An online gesture recognition software is developed
and relevant online performance evaluation index is given. Online performance of human-machine interface( HMI) of B-mode ultrasound is verified by experiment.The experimental results show that compared with traditional HMIs
this system has better online recogrition effect for 11 types of hand motions. The average online motion selection time is( 0. 24 ± 0. 15) s
the motion completion time is( 1. 27 ± 0. 19) s
the motion completion rate is( 97 ± 7) % and the real-time accuracy is( 95 ± 5) %.