Layout of Multiple Views for Volume Visualization: A User Study Daniel Lewis, Steve Haroz, Kwan-Liu Ma University of California, Davis.

Layout of Multiple Views for Volume Visualization: A User Study

Daniel Lewis, Steve Haroz, Kwan-Liu Ma

University of California, Davis

Outline

Background Motivation and Problem Statement How we approached problem Study Results Conclusions

2

Outline

Background Motivation and Problem Statement How we approached problem Study Results Conclusions

3

Background

Limitations of 3D vis software Human-interaction important Past research:•Multiple-views

•Constraint example

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Outline

Background Motivation and Problem Statement How we approached problem Study Results Conclusions

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6

Motivation and Problem

Problem: Effectiveness (time) of layout flexibility for

volume visualization

Hypothesis: Constrained multiple-views best for time-

variant data

Outline

Background Motivation and Problem Statement How we approached problem Study Results Conclusions

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8

Layout

Simple Split

Radial Freeform

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Program

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Datasets

Outline

Motivation and Problem Statement How we approached problem Study Results Conclusions

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1st Study

Between subject Time-invariant & Time-variant w/ 2 layouts 24 participants Tutorial and practice Data sets: Brain (invariant) and Vortex (variant)

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2nd Study

Within-subject Time-variant 12 participants Tutorial and practice Tracked size of brain tumor

Outline

Motivation and Problem Statement How we approached problem Study Results Conclusions

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Between-Subject Results

Time-Invarient Brain Dataset

00:00

02:53

05:46

08:38

11:31

14:24

17:17

20:10

23:02

25:55

Simple Split Radial Freeform

Tim

e (m

in:s

ec)

Time-Varient Vortex Dataset

00:00

02:53

05:46

08:38

11:31

14:24

17:17

20:10

23:02

25:55

Simple Split Radial FreeformT

ime

(min

:sec

)

Time Invariant Time Variant

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Within-Subject Results

Within Subject Results (Time-Variant Head Dataset)

0

1

2

3

4

5

Single Split Radial Freeform

Tim

e (m

in)

Time Variant

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Time Variant Data Results

Within Subject Results (Time-Variant Head Dataset)

0

1

2

3

4

5

Single Split Radial Freeform

Tim

e (m

in)

Time-Varient Vortex Dataset

00:00

02:53

05:46

08:38

11:31

14:24

17:17

20:10

23:02

25:55

Simple Split Radial Freeform

Tim

e (m

in:s

ec)

Test 1: Between-Subject

Test 2: Within-Subject

Outline

Motivation and Problem Statement How we approached problem Study Results Conclusions

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Conclusions

Time-invariant:

NO effect on accuracy, speed, performance

Time-variant:

Multiple Views > Single View

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Conclusions

Hypothesis NOT supported

Layout flexibility does NOT effect performance

Discussion and Future Works

Benefit of flexibility offsets time spent

Future Works

•More test subjects

•More tests with specialist

•More and varied layouts

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Acknowledgement

Support: • NSF under grants IIS-0552334 • ACI-0222991

Thanks to all of our participants.

Any Questions?

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Questions

Any Questions?

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Datasets

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Program