Title:
Exact Ray-Traced Animation Frames Generated by Reprojection
Exact Ray-Traced Animation Frames Generated by Reprojection
Files
Author(s)
Adelson, Stephen Joel
Hodges, Larry F.
Hodges, Larry F.
Advisor(s)
Editor(s)
Collections
Supplementary to
Permanent Link
Abstract
The majority of computer graphics images are generated as part of a sequence of animation frames. The usual approach for producing these images is to render each frame as if it were a single, isolated image. A technique is described which exploits spatial-temporal coherence between frames to speed up the generation of a ray-traced animation sequence. The concept is that the information gained when ray-tracing a particular frame in a sequence may be used to speed up the generation of adjacent frames, reprojecting samples from one frame to the next. This approach promises significant savings when ray-tracing animations which have moving and rotating viewpoints, objects and/or light sources. The algorithm is tested on an animation with many reflective surfaces, yet it still attains up to 96% savings over full ray-tracing in terms of the number of rays cast.
Sponsor
Date Issued
1993
Extent
2459413 bytes
Resource Type
Text
Resource Subtype
Technical Report