Abstract
Caustic effects produced by the transport of light from specular surfaces to diffuse surfaces are a common type of optical effect that cannot be modeled by ray tracing. We propose a two-pass algorithm to model caustic effects efficiently and reliably. In the proposed method, information on transmitted light beams is collected in a tree structure, which is used to compute the intensity efficiently. The method does not require the polygonization of diffuse surfaces and can easily be combined with any rendering algorithm.
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Appel A (1968) Some techniques for shading machine renderings of solids. Proceedings of American Federation of Information Processing Societies (AFIPS) JSCC, pp 37–45
Arvo J (1986) Backward ray tracing. SIGGRAPH Course Notes, No. 12
Arvo J, Kirk D (1987) Fast ray tracing by ray classification. Comput Graph 21:55–64
Campbell AT, Fussell DS (1990) Adaptive mesh generation for global diffuse illumination. Comput Graph 24:155–164
Chen SE, Rushmeier HE, Miller G, Turner D (1991) A progressive multi-pass method for global illumination. Comput Graph 25:165–174
Glassner AS (1984) Space subdivision for fast ray tracing. IEEE Comput Graph Appl 4:15–22
Hanrahan P (1983) Ray tracing algebraic surfaces. Comput Graph 17:83–90
Heckbert PS, Hanrahan P (1984) Beam tracing polygonal objects. Comput Graph 18:119–127
Kajiya JT (1983) Ray tracing parametric patches. Comput Graph 16:245–254
Kajiya JT (1983) New techniques for ray tracing procedurally defined objects. Comput Graph 17:91–102
Mitchell D, Hanrahan P (1992) Illumination from curved reflectors. Computer Graph 26:283–291
Shinya M, Takahashi T, Naito S (1987) Principles and applications of pencil tracing. Comput Graph 21:45–54
Sillion F, Puech C (1989) A general two-pass method intergrating specular and diffuse reflection. Comput Graph 23:335–344
Snyder JM, Barr AH (1987) Ray tracing complex models containing surface tessellations. Comput Graph 21:119–128
Toussaint G (1985) Computational Geometry. North-Hollard, Amsterdam
Wallace JR, Cohen MF, Greenberg DP (1987) A two-pass solution to the rendering equation: a synthesis of ray tracing and radiosity methods. Comput Graph 21:311–320
Watt M (1990) Light-water interaction using backward beam tracing. Comput Graph 24:377–385
Watt A, Watt M (1992) Advanced Animation and Rendering Techniques, Theory and Practice. Addison-Wesley, Wokingham UK
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Chuang, JH., Cheng, SA. Computing caustic effects by backward beam tracing. The Visual Computer 11, 156–166 (1995). https://doi.org/10.1007/BF01898601
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DOI: https://doi.org/10.1007/BF01898601