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Gestural Bimanual Input

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Final papers: 4 pages in the traditional CHI format or 6 pages in the work-in ... Pop-up Linear Menu. Pop-up Pie Menu. 10. Gestural / Bimanual Input ... – PowerPoint PPT presentation

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Title: Gestural Bimanual Input


1
Gestural / Bimanual Input
  • Scott Klemmer
  • 29 November 2005

2
Final project papers presentations
  • Final papers 4 pages in the traditional CHI
    format or 6 pages in the work-in-progress format
    (same effective length, I suggest the latter as
    you can submit it to CHI WIP)
  • Final presentations 4 minutes each, followed by
    posters/demos
  • There will be outside reviewers, also folks from
    industry will be coming

3
How to write a good paper
  • Have a clear hypothesis
  • Explain design ideas, system, and eval
  • Read your critiques of earlier work
  • Compare your results to 4-5 pieces of related
    work
  • scholar.google.com is a great resource

4
Milestone 2 demo times
  • 130 - Deepak Kumar and David Tu
  • 140 - David Akers
  • 150 - Luping May, Kevin Collins, Scott Doorley
  • 200 - Malte F. Jung, Howard Kao, Ravi Teja
    Tiruvury, Parul Vora
  • 210 - Becky Currano and Murad Akhter
  • 220 - Christina Chan
  • 230 - Tom Hurlbutt
  • 240 - Dhyanesh Narayanan
  • 250 - BREAK
  • 300 - Dean Eckles, Tony Tulathimutte, Tanya
    Breshears
  • 310 - Jonathan Effrat and May Tan
  • 320 - Shailendra Rao and Abhay Sukumaran
  • 330 - Adam Kahn and Doug Wightman
  • 340 - Brandon Burr
  • 350 - Angela Kessell and Chris Chan

5
Pointing Device Evaluation
  • Experimental task target acquisition
  • abstract, elementary, essential
  • Real task interacting with GUIs
  • pointing is fundamental

6
Fitts Law (Paul Fitts, 1954)
Task difficulty is analogous to information -
execution interpreted as human rate of
information processing
7
50 years of data
Reference MacKenzie, I. Fitts Law as a research
and design tool in human computer interaction.
Human Computer Interaction, 1992, Vol. 7, pp.
91-139
8
What does Fitts law really model?
Target Width
Velocity
(c)
(a)
(b)
Distance
9
Using these laws to predict performance
  • Which will be faster on average?
  • pie menu (bigger targets less distance)?

10
Beyond pointing Trajectory based tasks
11
Gaming Fitts Law
  • The Macintosh menu bar and taskbar and the
    Windows XP Taskbar have infinite height
    improving their Fitts Law performance
  • as does the back button in the Firefox browser

12
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13
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14
Yves Guiard Kinematic Chain
  • Asymmetry in bimanual activities
  • Under standard conditions, the spontaneous
    writing speed of adults is reduced by some 20
    when instructions prevent the non-preferred hand
    from manipulating the page
  • Non-dominant hand (NDH) provides a frame of
    reference for the dominant hand (DH)
  • NDH operates at a course temporal and spatial
    scale DH operates at a fine temporal and spatial
    scale
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