{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T19:41:55Z","timestamp":1783107715576,"version":"3.54.6"},"reference-count":15,"publisher":"Association for Computing Machinery (ACM)","issue":"4","license":[{"start":{"date-parts":[[2017,7,20]],"date-time":"2017-07-20T00:00:00Z","timestamp":1500508800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["1451828"],"award-info":[{"award-number":["1451828"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Graph."],"published-print":{"date-parts":[[2017,8,31]]},"abstract":"<jats:p>Physically-based fur rendering is difficult. Recently, structural differences between hair and fur fibers have been revealed by Yan et al. (2015), who showed that fur fibers have an inner scattering medulla, and developed a double cylinder model. However, fur rendering is still complicated due to the complex scattering paths through the medulla. We develop a number of optimizations that improve efficiency and generality without compromising accuracy, leading to a practical fur reflectance model. We also propose a key contribution to support both near and far-field rendering, and allow smooth transitions between them.<\/jats:p>\n          <jats:p>\n            Specifically, we derive a compact BCSDF model for fur reflectance with only 5 lobes. Our model unifies hair and fur rendering, making it easy to implement within standard hair rendering software, since we keep the traditional\n            <jats:italic>R<\/jats:italic>\n            ,\n            <jats:italic>TT<\/jats:italic>\n            , and\n            <jats:italic>TRT<\/jats:italic>\n            lobes in hair, and only add two extensions to scattered lobes,\n            <jats:italic>\n              TT\n              <jats:sup>s<\/jats:sup>\n            <\/jats:italic>\n            and\n            <jats:italic>\n              TRT\n              <jats:sup>s<\/jats:sup>\n            <\/jats:italic>\n            . Moreover, we introduce a compression scheme using tensor decomposition to dramatically reduce the precomputed data storage for scattered lobes to only 150 KB, with minimal loss of accuracy. By exploiting piecewise analytic integration, our method further enables a multi-scale rendering scheme that transitions between near and far field rendering smoothly and efficiently for the first time, leading to 6 -- 8\u00d7 speed up over previous work.\n          <\/jats:p>","DOI":"10.1145\/3072959.3073600","type":"journal-article","created":{"date-parts":[[2017,7,21]],"date-time":"2017-07-21T12:24:07Z","timestamp":1500639847000},"page":"1-13","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":20,"title":["An efficient and practical near and far field fur reflectance model"],"prefix":"10.1145","volume":"36","author":[{"given":"Ling-Qi","family":"Yan","sequence":"first","affiliation":[{"name":"University of California, Berkeley"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henrik Wann","family":"Jensen","sequence":"additional","affiliation":[{"name":"University of California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ravi","family":"Ramamoorthi","sequence":"additional","affiliation":[{"name":"University of California"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2017,7,20]]},"reference":[{"key":"e_1_2_2_1_1","unstructured":"Sameer Agarwal Keir Mierle and Others. 2010. Ceres Solver. http:\/\/ceres-solver.org. (2010).  Sameer Agarwal Keir Mierle and Others. 2010. Ceres Solver. http:\/\/ceres-solver.org. (2010)."},{"key":"e_1_2_2_2_1","volume-title":"Objects Specialty Group Postprints","volume":"18","author":"Carrlee Ellen","year":"2011","unstructured":"Ellen Carrlee and Lauren Horelick . 2011 . The Alaska Fur ID Project: A virtual resource for material identification . In Objects Specialty Group Postprints , Vol. 18 . American Institute for Conservation of Historic and Artistic Works, 149--171. Ellen Carrlee and Lauren Horelick. 2011. The Alaska Fur ID Project: A virtual resource for material identification. In Objects Specialty Group Postprints, Vol. 18. American Institute for Conservation of Historic and Artistic Works, 149--171."},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/cgf.12830"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-8659.2011.01976.x"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/2542355.2542386"},{"key":"e_1_2_2_6_1","unstructured":"Anton\u00c3\u014b Galat\u00c3\u014bk Jan Galat\u00c3\u014bk Zdislav Krul and Anton\u00c3\u014bn Galat\u00c3\u014bk Jr. 2011. Furskin Identification. http:\/\/www.furskin.cz. (2011).  Anton\u00c3\u014b Galat\u00c3\u014bk Jan Galat\u00c3\u014bk Zdislav Krul and Anton\u00c3\u014bn Galat\u00c3\u014bk Jr. 2011. Furskin Identification. http:\/\/www.furskin.cz. (2011)."},{"key":"e_1_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.1145\/311535.311555"},{"key":"e_1_2_2_8_1","unstructured":"Wenzel Jakob. 2010. Mitsuba renderer. http:\/\/www.mitsuba-renderer.org. (2010).  Wenzel Jakob. 2010. 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