Generating exact ray-traced animation frames by reprojection
- 1 May 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Computer Graphics and Applications
- Vol. 15 (3) , 43-52
- https://doi.org/10.1109/38.376612
Abstract
The usual approach for producing an animation is to render each frame as if it were a single, isolated image. Badt described a technique for using reprojection (shifting pixel values between frames) to create approximate ray-traced animation frames of diffuse polygons. The technique described in this paper extends and improves Badt's algorithm, allowing exact frames and full ray-tracing. The method retains primary ray and first-level shadow ray information between frames using a process that becomes more efficient as the complexity of object intersection tests increases. In test sequences, the algorithm attains up to 92% savings in rendering time.Keywords
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