Efficient multi-view ray tracing using edge detection and shader reuse

Summary, in English

Stereoscopic rendering and 3D stereo displays are quickly becoming mainstream. The natural extension is autostereoscopic multi-view displays, which by the use of parallax barriers or lenticular lenses, can accommodate many simultaneous viewers without the need for active or passive glasses. As these displays, for the foreseeable future, will support only a rather limited number of views, there is a need for high-quality interperspective antialiasing. We present a specialized algorithm for efficient multi-view image generation from a camera line using ray tracing, which builds on previous methods for multi-dimensional adaptive sampling and reconstruction of light elds. We introduce multi-view silhouette edges to detect sharp geometrical discontinuities in the radiance function. These are used to significantly improve the quality of the reconstruction. In addition, we exploit shader coherence by computing analytical visibility between shading points and the camera line, and by sharing shading computations over

the camera line.

• Author: Magnus Andersson; Björn M Johnsson; Jacob Munkberg; Petrik Clarberg; Jon Hasselgren; Tomas Akenine-Möller
• Department/s: Department of Computer Science; ELLIIT: the Linköping-Lund initiative on IT and mobile communication; Parallel Systems
• Publishing year: 2011
• Language: English
• Pages: 665-676
• Publication/Series: The Visual Computer
• Volume: 27
• Issue: 6-8
• Full text: - 15 MB; Download statistics
• Links: http://dx.doi.org/10.1007/s00371-011-0560-4
• Document type: Conference paper
• Publisher: Springer
• Topic: Computer Science
• Keywords: multi-view; ray tracing; adaptive sampling; edge detection
• Conference name: Computer Graphics International, 2011
• Conference date: 2011-06-12 - 2011-06-15
• Conference place: Ottawa, Canada
• Status: Published
• Research group: Computer Graphics
• ISBN/ISSN/Other: ISSN: 1432-2315; ISSN: 0178-2789