Evaluating Dual-view Perceptual Issues in Handheld Augmented Reality: Device vs. User Perspective Rendering

Klen Čopič PuciharDr. Paul CoultonDr. Jason Alexander

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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).

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Thank you for your time.Questions?