ICMI '13: Evaluating Dual-view Perceptual Issues in Handheld Augmented Reality : Device vs . User...
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Transcript of ICMI '13: Evaluating Dual-view Perceptual Issues in Handheld Augmented Reality : Device vs . User...
Evaluating Dual-view Perceptual Issues in Handheld Augmented Reality: Device vs. User Perspective Rendering
Klen Čopič PuciharDr. Paul CoultonDr. Jason Alexander
Image from Google Maps
Image from Google Maps
Images from Google Image Search
Images from Google Image Search
Perceptual issue
“Perceptual issues relate to problems that arise while observing and
interpreting information (Kruijff et. al 2010).”
Hands on
Images from Google Image Search
Questions
• What are users’ expectations?• Does the dual-view problem
coupled with user’s expectations result in a dual-view perceptual issue?
• Are expectations of new and returning AR users different?
• How successful are users in dealing with perceptual issues that may arise?
Study Design• We focus on the class of tabletop sized AR
workspaces;• 24 participants: 8 female 16 male aged 21-
45.• Within subject experiment changing only
one variable magic-lens type:
Study A
• What are users’ expectations?• Are expectations of new and returning AR users
different?• Does the dual-view problem result in a dual-view
perceptual issue irrespective of expectations?
Study A Results (1)
• What are users’ expectations? User-perspective rendering
• Are expectations of new and returning AR users different? NO
3
21
Expectations All
Device-perspec-tive
User-perspective
10
Expectations No Prev. AR Use
Device-perspec-tiveUser-perspec-tive
3
11
Expectations With Prev. AR Use
Device-perspectiveUser-perspec-tive
Study A Results (2)
• Does the dual-view problem result in a dual-view perceptual issue? YES
• Does dual-view perceptual issue exist only in the group expecting user-perspective magic-lens? NO
• Why?
T-testP<0.001
F=0.018P=0.896
Only Device-perspective magic-lens
Study B
• How successful are participants at dealing with dual-view perceptual issues?
• Are their expectations affecting their performance?
• How does performance change over time?
Study B Results (1)
• Are users’ successful at dealing with dual-view problem when visuals reintroduced? NO.
• Are expectations affecting performance? NO
T-testP<0.001
T-testP<0.001
F=0.466P=0.5
F=0.404P=0.532
Only Device-perspective magic-lens
Study B Results (2)
• Do people improve over time? Yes but slower than expected.
T-testP=0.028
T-testP=0.064
Conclusion
• Dual-view perceptual issues exists irrespective of previous AR experience and expectations;
• Participants have a hard time dealing with dual-view problem, especially with the non-centered camera aspect.
• Participants learn how to deal with dual-view perceptual issue but slowly.
• Why is this important?• Are these results applicable outside
handheld AR context?
Image from Sony PlayRoom
Future
• Enhance existing work by introducing hand and dynamic user-perspective rendering.
• Explore if dual-view perceptual problem exists in fixed displays and moving observer AR setup (e.g. PalyRoom).
Map Image from Google Maps
Thank you for your time.Questions?