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Updated: Feb 4, 2026
08:04
Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
Published on: December 4, 2013
4.8K
Correcting geometric distortions in stereoscopic 3D imaging.
Zhongpai Gao1,2, Alex Hwang1, Guangtao Zhai2
1Schepens Eye Research Institute, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, United States of America.
Plos One
|October 9, 2018
Summary
Geometric distortions in 3D virtual environments can cause motion sickness. This study models these distortions, offering methods to minimize them by adjusting viewing parameters and head position for a better 3D experience.
Area of Science:
- Computer Science
- Human-Computer Interaction
- Virtual Reality
Background:
- Visually induced motion sickness (VIMS) is a common issue in virtual 3D environments.
- Geometric distortions in stereoscopic 3D arise from mismatches in imaging and display parameters.
Purpose of the Study:
- To develop a geometric model analyzing distortions in stereoscopic 3D.
- To identify key parameters and their interactions causing geometric distortions.
- To propose methods for minimizing these distortions.
Main Methods:
- A geometric model was formulated based on camera-display parameters and viewer head position.
- Analysis of five variables: camera convergence distance, three parameter-pair ratios, and head offset.
- Investigated individual and interactive effects of these variables on geometric distortions.
Main Results:
- Identified specific parameter mismatches (camera/eye separation, FOV, convergence distance) causing distortions.
- Quantified the impact of head position (lateral offset) on distortion.
- Demonstrated that adjusting certain parameters can compensate for mismatches in others.
Conclusions:
- The developed model provides insights into stereoscopic 3D geometric distortions.
- Methods exist to minimize distortions by adjusting viewing parameters, such as screen distance and effective convergence distance.
- Optimizing these parameters can reduce visually induced motion sickness in virtual environments.
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