However, the OpenCV ... hand to press the button which then moves so you can try again. The hand measurement seems accurate to a few centimeters which is good enough for many applications. The ...

[B. Aswinth Raj] wanted to control a VLC player with hand gestures. He turned to two common ultrasonic sensors and Python to do the job. There is also, of course, an Arduino. You can see a video ...

Some folks over at MIT managed to create an actuated surface that can be gesture controlled–a system made possible by employing openCV ... in response to different hand gestures.