{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T08:33:18Z","timestamp":1774600398126,"version":"3.50.1"},"reference-count":31,"publisher":"Association for Computing Machinery (ACM)","issue":"2","license":[{"start":{"date-parts":[[2007,6,1]],"date-time":"2007-06-01T00:00:00Z","timestamp":1180656000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Graph."],"published-print":{"date-parts":[[2007,6]]},"abstract":"<jats:p>Image-based relighting achieves high quality in rendering, but it requires a large number of measurements of the reflectance field. This article discusses sampling techniques that improve on the trade-offs between measurement effort and reconstruction quality.<\/jats:p>\n          <jats:p>Specifically, we (i) demonstrate that sampling with point lights and from a sparse set of incoming light directions creates artifacts which can be reduced significantly by employing extended light sources for sampling, (ii) propose a sampling algorithm which incrementally chooses light directions adapted to the properties of the reflectance field being measured, thus capturing significant features faster than fixed-pattern sampling, and (iii) combine reflectance fields from two different light domain resolutions.<\/jats:p>\n          <jats:p>We present an automated measurement setup for well-defined angular distributions of the incident, indirect illumination. It is based on programmable spotlights with controlled aperture that illuminate the walls around the scene.<\/jats:p>","DOI":"10.1145\/1243980.1243984","type":"journal-article","created":{"date-parts":[[2007,9,14]],"date-time":"2007-09-14T13:44:55Z","timestamp":1189777495000},"page":"10","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":40,"title":["Adaptive sampling of reflectance fields"],"prefix":"10.1145","volume":"26","author":[{"given":"Martin","family":"Fuchs","sequence":"first","affiliation":[{"name":"MPI Informatik"}]},{"given":"Volker","family":"Blanz","sequence":"additional","affiliation":[{"name":"Universit\u00e4t Siegen"}]},{"given":"Hendrik P.A.","family":"Lensch","sequence":"additional","affiliation":[{"name":"MPI Informatik"}]},{"given":"Hans-Peter","family":"Seidel","sequence":"additional","affiliation":[{"name":"MPI Informatik"}]}],"member":"320","published-online":{"date-parts":[[2007,6]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/344779.344932"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/344779.344844"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/300776.300778"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/344779.344855"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.2312\/EGWR\/EGSR06\/183-194"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.2312\/EGWR\/EGSR05\/157-164"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.2312\/EGWR\/EGSR06\/251-262"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICCV.2005.249"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.2312\/EGWR\/EGSR05\/091-098"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICPR.2004.38"},{"key":"e_1_2_1_11_1","first-page":"3","article-title":"Planned sampling of spatially varying brdfs","volume":"22","author":"Lensch H. 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