Investigation of Hand Motion Language in Shape Conceptualization

Abstract

This paper summarizes the results of an empirical study concerning the use of hand motions as one of the input mechanisms of a multi-modal interface of computer aided conceptual design systems for initial shape design of consumer durables. A hand motion language (HML) has been developed and used in designed experiments to describe simple, compound and hybrid shapes. The subjects were asked to reconstruct the presented shapes by sketching on paper. Comprehension of the hand motion language has been evaluated in terms of fidelity and efficiency. The results clearly indicate the potentials of a HML in shape conceptualization. In addition, the experiments revealed several new issues related to the application of the hand motion language in a multi-modal interface.