Abstract
The basic ray-tracing algorithm is adapted to make ray-tracing faster for the production of motion pictures. Two algorithms are presented. The image space temporal coherence algorithm takes advantage of the fact that motion picture images do not change very much from frame to frame. The reprojection algorithm uses information about the object space saved from the previous frame to accelerate the processing of the current frame. The reprojection algorithm is used when the viewpoint of the current frame is changed by a small amount from the viewpoint of the previous frame.
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Bouville C (1985) Bounding Ellipsoids for Ray-Fractal Intersections. Siggraph 85, pp 45–52
Cook RL, Porter T, Carpenter L (1984) Distributed Ray Tracing. Siggraph 84, 18 (3):137–145
Dippe' MAZ, Erling HW (1985) Antialiasing Through Stochastic Sampling. Siggraph 85, pp 69–78
Fujimoto A, Tanaka T, Iwata K (1986) Arts: Accelerated Ray-Tracing System. IEEE Comput Graph Appl 6(4):16–25
Glassner AS (1984) Space Subdivision for Faster Ray Tracing. IEEE Comput Graph Appl (October 1984), pp 15–22
Hanes EA, Greenberg DP (1986) The Light Buffer: A Shadow-Testing Accelerator. IEEE Comput Graph Appl 6(9):6–16
Kajya JT (1982) Ray Tracing Parametric Patches. Comput Graph 16(3):245–254
Lee ME, Redner RA, Uselton SP (1985) Statistically Optimized Sampling for Distributed Ray Tracing. Siggraph 85:61–65
Roth SD (1982) Ray Casting for Modeling Solids. Comput Graph Image Proc 18:109–144
Weghorst H, Hooper G, Greenberg DP (1984) Improved Computational Methods for Ray Tracing. ACM Trans Graph 3(1):52–69
Whitted, Turner (1980) An Improved Illumination Model for Shaded Display. CACM 23:343–349
Wyvill G, Kunii TL, Shirai Y (1986) Space Subdivision for Ray Tracing In CSG. IEEE Comput Graph Appl 6(4):28–33
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Badt, S. Two algorithms for taking advantage of temporal coherence in ray tracing. The Visual Computer 4, 123–132 (1988). https://doi.org/10.1007/BF01908895
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DOI: https://doi.org/10.1007/BF01908895