Understanding Face Gestures with a User-Centered Approach Using Personal Computer Applications as an Example

While face gesture input has been proposed by researchers, the issue of practical gestures remains unsolved. We present the first comprehensive investigation of user-defined face gestures as an augmented input modality. Based on a focus group discussion, we developed three sets of tasks, where we asked participants to spontaneously produce face gestures to complete these tasks. We report our findings of a user study and discuss the user preference of face gestures. The results inform the development of future interaction systems utilizing face gestures.