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Graph."],"published-print":{"date-parts":[[2012,1]]},"abstract":"<jats:p>\n            This article presents two new parametric models of the\n            <jats:italic>Bidirectional Reflectance Distribution Function<\/jats:italic>\n            (BRDF), one inspired by the Rayleigh-Rice theory for light scattering from optically smooth surfaces, and one inspired by micro-facet theory. The models represent scattering from a wide range of glossy surface types with high accuracy. In particular, they enable representation of types of surface scattering which previous parametric models have had trouble modeling accurately. In a study of the scattering behavior of measured reflectance data, we investigate what key properties are needed for a model to accurately represent scattering from glossy surfaces. We investigate different parametrizations and how well they match the behavior of measured BRDFs. We also examine the scattering curves which are represented in parametric models by different distribution functions. Based on the insights gained from the study, the new models are designed to provide accurate fittings to the measured data. Importance sampling schemes are developed for the new models, enabling direct use in existing production pipelines. In the resulting renderings we show that the visual quality achieved by the models matches that of the measured data.\n          <\/jats:p>","DOI":"10.1145\/2077341.2077350","type":"journal-article","created":{"date-parts":[[2012,2,22]],"date-time":"2012-02-22T18:42:36Z","timestamp":1329936156000},"page":"1-14","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":85,"title":["BRDF models for accurate and efficient rendering of glossy surfaces"],"prefix":"10.1145","volume":"31","author":[{"given":"Joakim","family":"L\u00f6w","sequence":"first","affiliation":[{"name":"Link\u00f6ping University, Sweden"}]},{"given":"Joel","family":"Kronander","sequence":"additional","affiliation":[{"name":"Link\u00f6ping University, Sweden"}]},{"given":"Anders","family":"Ynnerman","sequence":"additional","affiliation":[{"name":"Link\u00f6ping University, Sweden"}]},{"given":"Jonas","family":"Unger","sequence":"additional","affiliation":[{"name":"Link\u00f6ping University, Sweden"}]}],"member":"320","published-online":{"date-parts":[[2012,2,2]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1080\/10867651.2000.10487522"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/563858.563893"},{"key":"e_1_2_1_3_1","volume-title":"Proc. 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Light scattering characteristics of optical surfaces . Proc. SPIE 107 , 41--47. Harvey, J. E. 1977. Light scattering characteristics of optical surfaces. Proc. SPIE 107, 41--47."},{"key":"e_1_2_1_8_1","volume-title":"Proc. SPIE. 6672","author":"Harvey J. E.","unstructured":"Harvey , J. E. , Krywonos , A. , and Stover , J. C . 2007. Unified scatter model for rough surfaces at large incident and scatter angles . Proc. SPIE. 6672 . Harvey, J. E., Krywonos, A., and Stover, J. C. 2007. Unified scatter model for rough surfaces at large incident and scatter angles. Proc. SPIE. 6672."},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1145\/122718.122738"},{"key":"e_1_2_1_10_1","volume-title":"Proc. SPIE 6291","author":"Krywonos A.","unstructured":"Krywonos , A. and Harvey , J. E . 2006. Recent developments in the analysis of surface scatter phenomena . Proc. SPIE 6291 . Krywonos, A. and Harvey, J. E. 2006. Recent developments in the analysis of surface scatter phenomena. Proc. 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Richmond J. C. Hsia J. J. Ginsber I. W. and Limperis T. 1977. Geometrical Considerations and Nomenclature for Reflectance. U.S. Department of Commerce National Bureau of Standards NBS MN-160.","DOI":"10.6028\/NBS.MONO.160"},{"key":"e_1_2_1_20_1","unstructured":"Pharr M. and Humphreys G. 2010. Physically Based Rendering 2nd Ed. From Theory To Implementation. Morgan Kaufmann Publishers Inc.   Pharr M. and Humphreys G. 2010. Physically Based Rendering 2nd Ed. From Theory To Implementation. 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