Implementation of Digital Chime-bell Interaction System Driven by Hand Gesture

The development of computer and pervasive computing technology has made a breakthrough in non-material cultural heritage protection. Digital reconstruction of heritage and new HCI (human-computer interaction) medium makes it possible to let the audiences get more close-up experience. In this paper, hand gesture interaction was introduced to simulate the playing methods of chime-bell. In "hand gesture modeling" phase, the apparent hand model was built due to its little cost; In "hand gesture segment" phase, the skin color based segmentation method was adopted due to its simple and real-time behalf; In "hand gesture recognition" phase, the Freeman Chain Code was used to encode the outline of hand to recognize the characteristics of hand gesture. And what\´s more, the emotion of the gesture was considered in order to enhance the recognition accuracy and the interesting of the interaction system. Last, the implementation of digital chime-bell interaction system verified the researches\´ efficiency. The system\´s recognition accuracy with no more than three times repeat was 91.3%. That shows it is suitable in "digital museum" and other applications.