Pankaj Khanna, Jesper Mortensen, Insu Yu, Mel Slater
Abstract:
Ray tracing
dynamically changing scenes with unstructured motion for animated objects has
long been a problem for ray-traversal acceleration schemes.
When polygons are transformed independently of one another, the cost of updating
traditional spatial data-structures can be quite high [Lext
et al., 2001] [Wald et al., 2003]. We propose a ray traversal scheme that is
well suited to scenes with dynamically changing objects
during ray tracing. A similar data structure for propagation and walkthrough
only rendering of globally illuminated scenes was introduced for
global illumination in [Slater et al., 2004]. Here we concentrate on an
application and modification of that data structure for the task of ray
tracing scenes composed of static and dynamic objects. The major computation for
handling arbitrary transformations of dynamic objects
reduces to low resolution 2D polygon rasterisation.
Media:
The paper - (600KB .pdf)
The video - (11.3MB mpg)
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Links:
Dynamic
Ray Tracing paper
Virtual
Light Field paper
BART web page at Chalmers