Use of Eye Movement Gestures for Web Browsing

Kevin JuangFrank JasenAkshay KatrekarJoe 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 (Apparatus)

Methodology (Stimulus)

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

Methodology (Implementation)

Methodology (Implementation)

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

Results

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

Questions?