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Centre for Vision and Visual Cognition


Publication details for Dr Nick Holliman

Holliman, N. S. (2005). Smoothing region boundaries in variable depth mapping for real time stereoscopic images. Stereoscopic Displays and Virtual Reality Systems XII, San Jose, Calif., International Society for Optical Engineering.
  • Publication type: Edited works: conference proceedings
  • ISSN/ISBN: 0819456373
  • Keywords: Stereoscopic cameras, Graphics pipeline, Human factors, Computer graphics, Multi-View, 3D display.
  • View online: Online version
  • Durham research online: DRO record

Author(s) from Durham


We believe the need for stereoscopic image generation methods that allow simple, high quality content creation
continues to be a key problem limiting the widespread up-take of 3D displays. We present new algorithms for
creating real time stereoscopic images that provide increased control to content creators over the mapping of
depth from scene to displayed image.
Previously we described a Three Region, variable depth mapping, algorithm for stereoscopic image generation.
This allows different regions within a scene to be represented by different ranges of perceived depth in the final
image. An unresolved issue was that this approach can create a visible discontinuity for smooth objects crossing
region boundaries. In this paper we describe two new Multi-Region algorithms to address this problem: boundary
smoothing using additional sub-regions and scaling scene geometry to smoothly vary depth mapping.
We present real time implementations of the Three-Region and the new Multi-Region algorithms for OpenGL
to demonstrate the visual appearance of the results. We discuss the applicability and performance of each
approach for rendering real time stereoscopic images and propose a simple modification to the standard graphics
pipeline to better support these algorithms.


17-19 January 2005.

Part of IS&T/SPIE's International Symposium on Electronic Imaging : Science and Technology.