Duvenhage, BBouatouch, KKourie, DG2011-10-032011-10-032011-05Duvenhage, B, Bouatouch, K and Kourie, DG. 2011. Extending backward polygon beam tracing to glossy scattering surfaces. Computer Graphics Forum, Vol. DOI: 10.1111/j.1467-8659.2011.01903.x, pp 1-120167-70551467-8659http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8659.2011.01903.x/pdfhttp://hdl.handle.net/10204/5191Copyright: 2011 The AuthorsBackward polygon beam tracing methods, that is beam tracing from the light source (L), are well suited to gather path coherency from specular (S) scattering surfaces. These methods are useful for modelling and efficiently simulating caustics on diffuse (D) surfaces; an effect due to LS + D transport paths. This paper generalizes backward polygon beam tracing to include a glossy (G) scattering surface. To this end the details of a beam tracing lumped model and implementation of L(S|G)D transport paths are presented. Although we limit the discussion to short transport paths, we show that backward beam tracing is faster than photon mapping by an order of magnitude for rendering caustics from glossy and specular surfaces.enBackward beam tracingCausticsGlossy scatteringLumped transport modelPolygon beam tracingComputer graphicsArticleDuvenhage, B., Bouatouch, K., & Kourie, D. (2011). Extending backward polygon beam tracing to glossy scattering surfaces. http://hdl.handle.net/10204/5191Duvenhage, B, K Bouatouch, and DG Kourie "Extending backward polygon beam tracing to glossy scattering surfaces." (2011) http://hdl.handle.net/10204/5191Duvenhage B, Bouatouch K, Kourie D. Extending backward polygon beam tracing to glossy scattering surfaces. 2011; http://hdl.handle.net/10204/5191.TY - Article AU - Duvenhage, B AU - Bouatouch, K AU - Kourie, DG AB - Backward polygon beam tracing methods, that is beam tracing from the light source (L), are well suited to gather path coherency from specular (S) scattering surfaces. These methods are useful for modelling and efficiently simulating caustics on diffuse (D) surfaces; an effect due to LS + D transport paths. This paper generalizes backward polygon beam tracing to include a glossy (G) scattering surface. To this end the details of a beam tracing lumped model and implementation of L(S|G)D transport paths are presented. Although we limit the discussion to short transport paths, we show that backward beam tracing is faster than photon mapping by an order of magnitude for rendering caustics from glossy and specular surfaces. DA - 2011-05 DB - ResearchSpace DP - CSIR KW - Backward beam tracing KW - Caustics KW - Glossy scattering KW - Lumped transport model KW - Polygon beam tracing KW - Computer graphics LK - https://researchspace.csir.co.za PY - 2011 SM - 0167-7055 SM - 1467-8659 T1 - Extending backward polygon beam tracing to glossy scattering surfaces TI - Extending backward polygon beam tracing to glossy scattering surfaces UR - http://hdl.handle.net/10204/5191 ER -