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Tuning self-motion perception in virtual reality with visual illusions.

Gerd Bruder1, Frank Steinicke, Phil Wieland

  • 1Departments of Human-Computer Media and Computer Science, University of Würzburg, Oswald-Külpe-Weg 82, D-97074 Würzburg, Germany. gerd.bruder@uni-wuerzburg.de

IEEE Transactions on Visualization and Computer Graphics
|November 16, 2011
PubMed
Summary
This summary is machine-generated.

Virtual environments (VEs) often cause users to underestimate travel distances. This study introduces apparent self-motion illusions by manipulating optic flow fields, effectively compensating for this underestimation without altering real-world motion mapping.

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Area of Science:

  • Human-Computer Interaction
  • Virtual Reality
  • Perception Psychology

Background:

  • Motion perception in virtual environments (VEs) differs from reality, often leading to underestimation of travel distances.
  • Previous solutions involved scaling virtual camera motion, which can cause misalignments and cognitive distortions.
  • A novel approach is needed to address distance underestimation without introducing discrepancies between real and virtual motion.

Purpose of the Study:

  • To investigate the use of apparent self-motion illusions via optic flow manipulation to improve motion perception in VEs.
  • To determine the effectiveness of these illusions in compensating for the underestimation of travel distances.
  • To explore the application of these illusions to specific regions of the virtual view, such as the ground plane or peripheral vision.

Main Methods:

  • Developed and applied four distinct optic flow manipulation techniques to induce apparent self-motion illusions during user movement in VEs.
  • Conducted experiments to measure the impact of these optic flow manipulations on users' self-motion judgments.
  • Compared the effectiveness of different illusion application regions (ground plane vs. peripheral vision).

Main Results:

  • Optic flow field manipulation significantly affected users' self-motion judgments in virtual environments.
  • The proposed illusions successfully compensated for the underestimation of travel distances in VEs.
  • The study identified specific regions within the virtual view where optic flow manipulation is most effective.

Conclusions:

  • Apparent self-motion illusions created by manipulating optic flow fields offer a viable alternative to motion scaling for improving VE motion perception.
  • This method effectively corrects for underestimation of travel distances without introducing physical discrepancies between real and virtual motion.
  • Further research can optimize optic flow manipulation strategies for enhanced immersive experiences.