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Use of Eye Movement Gestures for Web Browsing. Kevin Juang Frank Jasen Akshay Katrekar Joe Ahn. Motivation. Eye Gestures Gaze input Mouse gestures Web Browsing Common task in modern computing Well suited to eye movement gestures Well learned, emphasizing speed
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Use of Eye Movement Gestures for Web Browsing Kevin Juang Frank Jasen Akshay Katrekar Joe Ahn
Motivation • Eye Gestures • Gaze input • Mouse gestures • Web Browsing • Common task in modern computing • Well suited to eye movement gestures • Well learned, emphasizing speed • Natural mapping of navigational directions
Prior Work • Gaze Input Issues (Ashmore) • Eye tracker accuracy • Sensor lag • Fixation jitter • Midas touch • Mouse Gesture Issues (Moyle & Cockburn) • Complicated non-linear gestures • Not truly modeless • Greater need for feedback
Prior Work • Off-Screen Targets (Isokoski) • Addressed previous gaze input issues • Eye typing maybe not a good domain • Need for physical off-screen targets
Methodology (Apparatus) • Tobii ET-1750 from Tobii Technology • 17-inch TFT 1280x1024 Monitor • .5˚ accuracy with a 50 Hz sampling rate • 25-35 ms Latency • 28˚ visual angle vertically and horizontally
Methodology (Implementation) • Gaze point determined every 20 ms • Four hot zones • Middle 30% of each edge • Extended 15% off the screen • 100 ms delay • Flags set when in hot zone
Hypotheses • Eye gesture should be both faster and less accurate compared to mouse • Eye fatigue should cause eye gesture to become slower as the number of instructions increases.
Results Number of subjects = 15
Discussion • Trial Length and Input Method Interaction • Suggests mouse input in certain situations • Test results perhaps not indicative of real world • Speed-Accuracy Tradeoff • Faster even accounting for error correction • Speed benefit outweighs accuracy loss • Future results could be even more favorable
Survey Results • Ease of use (eye gestures) ---- 3.53 • Speed and efficiency in using eye gestures compared to mouse input ---- 4.53 • Overall satisfaction in using eye gestures compared to mouse ---- 3.60 • Eye gesture as an effective means of web browsing navigation ---- 3.93
Further Work • Real World Setting • High fidelity • Browser implementation • Other domains outside web browsing • Additional gestures • Corners • Following a link • Magnitude of scrolling
Conclusions • Eye Gesture System • Leverages gaze input and mouse gestures • Web browsing as a good domain • Off-screen hot zones • Benefits • Speed • User satisfaction