Mid-air Pan-and-Zoom on Wall-sized Displays - PowerPoint PPT Presentation

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Mid-air Pan-and-Zoom on Wall-sized Displays

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  1. Mid-air Pan-and-Zoom on Wall-sized Displays Mathieu Nancel et al. CHI 2011 Session: Mid-air Pointing & Gestures Presenter: Fan Hong Apr. 25, 2012

  2. Task Pan-zoom navigation Wall-sized display Mid-air interaction “focus on that area over there”

  3. Design Space

  4. Unimanual vs. Bimanual Input

  5. Linear vs. Circular Gestures

  6. Degree of Guidance

  7. Design Space(2) Unimanual vs. bimanual Input Linear vs. circular gestures Guidance through passive haptic feedback Input gestures via a device(1D Path, 2D Surface) vs. in free space(3D Free) 12 techniques

  8. Interaction

  9. Goal Performance (task time and accuracy) Usability (fatigue and ease of use)

  10. Hypotheses Two-handed gestures faster(H1) and more accurate and easier to use(H2) than one-handed gestures Linear gestures are slower because of clutching(H3) Users prefer clutch-free circular gestures(H4) Techniques using fingers(1D Path and 2D Surface) faster than those requiring large muscle group(3D Free conditions)(H5) 1D path gestures are faster, with fewer overshoots than techniques with less haptic feedback(2D Surface and 3D Free)(H6) 3D Free gestures are more tiring(H7)

  11. Experiment Movement Time & Overshoots

  12. Conclusion Handedness: Two-handed gestures faster(H1✔) and more accurate and easier to use(H2✔) than one-handed gestures

  13. Conclusion(2) Gestures: Linear gestures are slower because of clutching(H3✘) Users prefer clutch-free circular gestures(H4✘1/12)

  14. Conclusion(3) Device vs. Free Space: Techniques using fingers(1D Path and 2D Surface) faster than those requiring large muscle group(3D Free conditions)(H5✔) Haptic Feedback: 1D path gestures are faster, with fewer overshoots than techniques with less haptic feedback(2D Surface and 3D Free)(H6✔)

  15. Conclusion(4) 3D Free gestures are more tiring(H7✔) No significant fatigue effect. Distance affects a lot. Participants prefer Two Hands(8/12), Linear Gestures(10/12). Mixed preferences about the degree of guidance(4/12 for 1D Path).

  16. Summary & Comments Bimanual > Unimanual Linear > Circular Device (1D Path, 2D Surface) > Free Space (3D Free) Free Hand Circular Fatigue

  17. Thanks!