Abstract
In the past twenty years, gaze control has become a reliable alternative input method not only for handicapped users. The selection of objects, however, which is of highest importance and of highest frequency in computer control, requires explicit control not inherent in eye movements. Objects have been therefore usually selected via prolonged fixations (dwell times). Dwell times seemed to be for many years the unique reliable method for selection. In this paper, we review pros and cons of classical selection methods and novel metaphors, which are based on pies and gestures. The focus is on the effectiveness and efficiency of selections. In order to estimate the potential of current suggestions for selection, a basic empirical comparison is recommended.
Highlights
In the past twenty years, gaze control has become a reliable alternative input method for handicapped users
The vision of attentive input is that, by gaining information about a user’s gazing behaviour, a system can react or, even better, predict his intentions and can provide suitable assistance. Another important feature of gaze control is its velocity: An object can be looked at much faster than it can be reached by hand or any tool
In this paper we provide an overview of selection metaphors which have been developed and used in the past twenty years and describe the efforts, qualities and challenges of using gaze for explicit computer control
Summary
In the past twenty years, gaze control has become a reliable alternative input method for handicapped users. The selection of objects, which is of highest importance and of highest frequency in computer control, requires explicit control not inherent in eye movements. Objects have been usually selected via prolonged fixations (dwell times). Dwell times seemed to be for many years the unique reliable method for selection. We review pros and cons of classical selection methods and novel metaphors, which are based on pies and gestures. The focus is on the effectiveness and efficiency of selections. In order to discover the real potential of current suggestions for selection, a basic empirical comparison is recommended
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