Recognition of hand gestures using range images

Gesture is one of the important channels of man-machine interface. In the paper, methods to recognize hand gestures using range images are proposed. Five hand gestures: “come on”, “go away”, “turn right”, “turn left” and “stop” are dealt with. A sequence of velocity vectors and normal vectors of a moving hand are extracted from range images, and gestures are recognized using the features. A recognition system is constructed which utilizes the recognition methods. Experiments to recognize persons´ gestures using the recognition system are performed to show the effectiveness of the proposed methods and the recognition system