User centered gesture development for smart lighting

The aim of this study is to investigate hand gesture expression and to understand it when controlling smart lighting system. The technology development has brought us the smart device which we can control multifunction of one or more systems. In order to fully utilize the functions, however, we need Natural User Interface (NUI) and intuitive control hand gesture. Therefore we conducted an experiment of hand gesture expression on 20 subjects to investigate and identify what kinds of hand gestures can be used to control the smart lighting system. The results identify categorization of hand gestures into three types. Also, differences between the gesture types were identified. In addition, the use of hand such as dominant hand and both hands affect the capability of people to express the hand gesture. This preliminary study can identify many important issues regarding hand gesture based interface for the smart lighting system. It can be further improved by verifications with consideration of context of use, preference test of hand, application of different devices or systems, and gesture evaluation.