Geometric Considerations for Stereoscopic Virtual Environments

  title={Geometric Considerations for Stereoscopic Virtual Environments},
  author={Larry F. Hodges and Elizabeth Thorpe Davis},
  journal={Presence: Teleoperators & Virtual Environments},
We examine the relationship among the different geometries implicit in a stereoscopic virtual environment. In particular, we examine in detail the relationship of retinal disparity, fixation point, binocular visual direction, and screen parallax. We introduce the concept of a volumetric spatial unit called a stereoscopic voxel. Due to the shape of stereoscopic voxels, apparent depth of points in space may be affected by their horizontal placement. 
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