Use of Eye Movement Gestures for Web Browsing

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Use of Eye Movement Gestures for Web Browsing

• Kevin Juang
• Frank Jasen
• Akshay Katrekar
• Joe Ahn

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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

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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

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Prior Work

• Off-Screen Targets (Isokoski)
• Addressed previous gaze input issues
• Eye typing maybe not a good domain
• Need for physical off-screen targets

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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

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Methodology (Apparatus)
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Methodology (Stimulus)
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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

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Methodology (Implementation)
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Methodology (Implementation)
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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.

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Results

• Number of subjects 15

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Results
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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

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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

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Further Work

• Real World Setting
• High fidelity
• Browser implementation
• Other domains outside web browsing
• Additional gestures
• Corners
• Following a link
• Magnitude of scrolling

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Conclusions

• Eye Gesture System
• Leverages gaze input and mouse gestures
• Web browsing as a good domain
• Off-screen hot zones
• Benefits
• Speed
• User satisfaction

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Questions?