Gesture termination algorithm for continuous input techniques

Many designs have been proposed to improve head tracking interfaces. However, in most head tracking applications, only a click to select is commonly available interaction style. In this paper we present an algorithm which integrates the parameters of the continuous input stream (movement acceleration and the amount of movement) and information concerning the user choice. The results of the test demonstrated that people could control head movement acceleration and the amount of movement without significant effort. The method supports a multiple choice of the commands like a marking menu, as well as several ways to cancel a selection. The method could also improve usability of video-based input techniques for people who still have a sufficient degree of head control.