Motivation System Design Experiments Coodusic 和京大盛 Basic Idea Ultrasound High sampling rate(48 kHz) Sensitive to the depth direction Only 1D information Mono-camera Low frame per second(30 fps) Accurate 2D information o Use ultrasound based sensing,along with one COTS mono-camera, to enable 3D tracking of user fingers with high frame rate. ·口0,42，平·2刀00 Ke Sun,et al Mobisys'18 June 3.2018 Depth Aware Finger Tapping on Virtual Display 6/22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motivation System Design Experiments Conclusion Basic Idea Time (millisecond) 0 50 100 150 200 250 300 350 400 450 500 I/Q (normalized) -300 -200 -100 0 100 200 300 400 I Q Ultrasound High sampling rate (48 kHz) Sensitive to the depth direction Only 1D information Mono-camera Low frame per second (30 fps) Accurate 2D information Use ultrasound based sensing, along with one COTS mono-camera, to enable 3D tracking of user fingers with high frame rate. Ke Sun, et al. Mobisys’18 June 3, 2018 Depth Aware Finger Tapping on Virtual Display 6 / 22