Techniques for interacting with off screen content
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Techniques for Interacting with Off-Screen Content. Pourang IraniCarl Gutwin University of ManitobaUniversity of Saskatchewan Grant PartridgeMahtab Nezhadasl University of ManitobaUniversity of Manitoba. Introduction. R. M. R. M. R. R. R. M. R. M. R. R. R. M. R. M.

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Techniques for Interacting with Off-Screen Content

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Techniques for interacting with off screen content

Techniques for Interacting with Off-Screen Content

Pourang IraniCarl Gutwin

University of ManitobaUniversity of Saskatchewan

Grant PartridgeMahtab Nezhadasl

University of ManitobaUniversity of Manitoba


Introduction

Introduction

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2d navigation time multiplexing

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2D navigation: Time Multiplexing

Zooming


2d navigation space multiplexing

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2D navigation: Space Multiplexing

Overview+DetailDragMag


Proxy based techniques

Proxy-based techniques

[Bezerianos and Balakrishnan, 2005]

[Baudisch et al., 2003]


2d navigation proxy

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2D navigation: Proxy

Hop (Halo + Proxies)

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Tasks

Tasks

  • Baudisch & Rosenholtz [2003]

    • “Position”

    • “Closest”

    • “Avoid”

  • Spatially Absolute

    • Existence, Count, Location

  • Spatially Relative

    • Proximity to reference, Proximity b/w objects, Cluster


Evaluation conditions

Evaluation: Conditions

  • Navigation Techniques

    • Zoom - two-level zoom

    • DragMag

    • Hop

  • Tasks

    • Absolute

    • Relative


Zooming

Zooming


Dragmag

DragMag


Techniques for interacting with off screen content

Hop


Results completion time

Results: Completion Time


Possible explanations strategy

Possible explanations – strategy

  • Number of operations about 1/5 with hop

  • Zooming requires more “trips” …

    • not so good for absolute tasks

  • … but good for spatial information

    • useful for relative tasks

  • DragMag reduced the number of “trips”

    • allows users to perform relative tasks with ease

    • but added complexity of managing windows


Possible explanations task based

Possible explanations – task-based

  • Relative tasks

    • Need orientation and comparisons b/w views

    • Rely on VSTM

  • Absolute tasks

    • Require information about the objects

    • Do not require spatial/orientation information


Winhop hop windows

WinHop (hop + windows)


Winhop

WinHop


Winhop1

WinHop


Winhop2

WinHop


Winhop3

WinHop


Winhop4

WinHop


Winhop video

WinHop (video)


Multiscalezoom

MultiscaleZoom


Multiscalezoom1

MultiscaleZoom


Multiscalezoom video

MultiscaleZoom (video)


Absolute location winhop

Absolute: Location (winhop)


Relative cluster msz

Relative: Cluster (msz)


Results

Results


Limitations of hybrid techniques

Limitations of Hybrid Techniques

  • WinHop

    • Many operations, significant learning curve

  • MultiScale Zoom

    • Clutter from proxies


Main findings

Main Findings

  • Each task requires a different navigation strategy

  • Proxy-based ideal for target-only info tasks

  • Time/Space multiplexing ideal for target-target info

  • Hybrids improve performance in both types of tasks

  • Performance with Multiscale Zoom remained constant


Conclusion

Conclusion

  • Beneficial to investigate techniques on multiple tasks

  • Ideal technique gives target and context information

  • Hybrid techniques are reliably good

    • Consider multiscale zoom for small displays

  • Hybrids performance on other tasks


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