Hybrid image-/model-based gaze-contingent rendering

  • Authors:
  • Hunter Murphy;Andrew T. Duchowski

  • Affiliations:
  • Clemson University;Clemson University

  • Venue:
  • Proceedings of the 4th symposium on Applied perception in graphics and visualization
  • Year:
  • 2007

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Abstract

A nonisotropic hybrid image-/model-based gaze-contingent rendering technique utilizing ray casting on a GPU is discussed. Empirical evidence derived from human subject experiments indicates an inverse relationship between a peripherally degraded scene's high-resolution inset size and mean search time, a trend consistent with existing image- and model- based techniques. In addition, the data suggest that maintaining a target's silhouette edges decreases search times when compared to targets with degraded edges. Benefits of the hybrid technique include simplicity of design and parallelizability, both conducive to GPU implementation.