{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T23:40:53Z","timestamp":1783467653087,"version":"3.55.0"},"reference-count":22,"publisher":"Association for Computing Machinery (ACM)","issue":"6","license":[{"start":{"date-parts":[[2017,12,5]],"date-time":"2017-12-05T00:00:00Z","timestamp":1512432000000},"content-version":"vor","delay-in-days":389,"URL":"http:\/\/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":[[2016,11,11]]},"abstract":"<jats:p>\n                    Volumetric micro-appearance models have provided remarkably high-quality renderings, but are highly data intensive and usually require tens of gigabytes in storage. When an object is viewed from a distance, the highest level of detail offered by these models is usually unnecessary, but traditional linear downsampling weakens the object's intrinsic shadowing structures and can yield poor accuracy. We introduce a joint optimization of single-scattering albedos and phase functions to accurately downsample heterogeneous and anisotropic media. Our method is built upon\n                    <jats:italic toggle=\"yes\">scaled phase functions<\/jats:italic>\n                    , a new representation combining abledos and (standard) phase functions. We also show that modularity can be exploited to greatly reduce the amortized optimization overhead by allowing multiple synthesized models to share one set of down-sampled parameters. Our optimized parameters generalize well to novel lighting and viewing configurations, and the resulting data sets offer several orders of magnitude storage savings.\n                  <\/jats:p>","DOI":"10.1145\/2980179.2980228","type":"journal-article","created":{"date-parts":[[2016,11,11]],"date-time":"2016-11-11T12:02:54Z","timestamp":1478865774000},"page":"1-11","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":56,"title":["Downsampling scattering parameters for rendering anisotropic media"],"prefix":"10.1145","volume":"35","author":[{"given":"Shuang","family":"Zhao","sequence":"first","affiliation":[{"name":"University of California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lifan","family":"Wu","sequence":"additional","affiliation":[{"name":"University of California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fr\u00e9do","family":"Durand","sequence":"additional","affiliation":[{"name":"MIT"}],"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":[[2016,12,5]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/TVCG.2011.81"},{"key":"e_1_2_2_2_1","volume-title":"Radiative Transfer","author":"Chandrasekhar S.","unstructured":"Chandrasekhar, S. 1960. Radiative Transfer. Dover Publications Inc."},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/1276377.1276476"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/2508363.2508377"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/1276377.1276412"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1145\/2451236.2451237"},{"key":"e_1_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.1145\/2766988"},{"key":"e_1_2_2_8_1","volume-title":"Wave propagation and scattering in random media","author":"Ishimaru A.","unstructured":"Ishimaru, A. 1978. Wave propagation and scattering in random media, vol. 2. Academic press New York."},{"key":"e_1_2_2_9_1","doi-asserted-by":"publisher","DOI":"10.1145\/1778765.1778790"},{"key":"e_1_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1145\/2601097.2601186"},{"key":"e_1_2_2_11_1","unstructured":"Jakob W. 2013. Mitsuba physically-based renderer. http:\/\/www.mitsuba-renderer.org."},{"key":"e_1_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.1109\/TVCG.2014.2312016"},{"key":"e_1_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.1145\/2818648"},{"key":"e_1_2_2_14_1","unstructured":"Kraus M. and B\u00fcrger K. 2008. Interpolating and downsampling RGBA volume data. In VMV 323--332."},{"key":"e_1_2_2_15_1","volume-title":"IEEE International Conference on Image Processing (ICIP)","author":"Liu X.","year":"2012","unstructured":"Liu, X., Tanaka, M., and Okutomi, M. 2012. Noise level estimation using weak textured patches of a single noisy image. In IEEE International Conference on Image Processing (ICIP) 2012, 665--668."},{"key":"e_1_2_2_16_1","doi-asserted-by":"publisher","DOI":"10.1145\/2766949"},{"key":"e_1_2_2_17_1","doi-asserted-by":"publisher","DOI":"10.1109\/TVCG.2014.2346324"},{"key":"e_1_2_2_18_1","doi-asserted-by":"publisher","DOI":"10.5555\/2383654.2383670"},{"key":"e_1_2_2_19_1","doi-asserted-by":"publisher","DOI":"10.1145\/142920.134075"},{"key":"e_1_2_2_20_1","doi-asserted-by":"publisher","DOI":"10.1145\/2010324.1964939"},{"key":"e_1_2_2_21_1","doi-asserted-by":"publisher","DOI":"10.1145\/2185520.2185571"},{"key":"e_1_2_2_22_1","doi-asserted-by":"publisher","DOI":"10.1145\/2601097.2601104"}],"container-title":["ACM Transactions on Graphics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/2980179.2980228","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/2980179.2980228","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/2980179.2980228","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,11,18]],"date-time":"2025-11-18T09:30:49Z","timestamp":1763458249000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/2980179.2980228"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,11,11]]},"references-count":22,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2016,11,11]]}},"alternative-id":["10.1145\/2980179.2980228"],"URL":"https:\/\/doi.org\/10.1145\/2980179.2980228","relation":{},"ISSN":["0730-0301","1557-7368"],"issn-type":[{"value":"0730-0301","type":"print"},{"value":"1557-7368","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,11,11]]},"assertion":[{"value":"2016-12-05","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}