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Graph."],"published-print":{"date-parts":[[2017,8,31]]},"abstract":"<jats:p>The ability to fabricate surfaces with fine control over bidirectional reflectance (BRDF) is a long-standing goal in appearance research, with applications in product design and manufacturing. We propose a technique that embeds magnetic flakes in a photo-cured resin, allowing the orientation distribution of those flakes to be controlled at printing time using a magnetic field. We show that time-varying magnetic fields allow us to control off-specular lobe direction, anisotropy, and lobe width, while using multiple spatial masks displayed by a UV projector allows for spatial variation. We demonstrate optical effects including bump maps: fat surfaces with spatially-varying specular lobe direction.<\/jats:p>","DOI":"10.1145\/3072959.3073701","type":"journal-article","created":{"date-parts":[[2017,7,21]],"date-time":"2017-07-21T12:24:07Z","timestamp":1500639847000},"page":"1-10","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["Printing anisotropic appearance with magnetic flakes"],"prefix":"10.1145","volume":"36","author":[{"given":"Thiago","family":"Pereira","sequence":"first","affiliation":[{"name":"Princeton University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carolina L. A. Paes","family":"Leme","sequence":"additional","affiliation":[{"name":"Universidade Federal do Rio de Janeiro"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steve","family":"Marschner","sequence":"additional","affiliation":[{"name":"Cornell University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Szymon","family":"Rusinkiewicz","sequence":"additional","affiliation":[{"name":"Princeton University"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2017,7,20]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/344779.344814"},{"key":"e_1_2_2_2_1","unstructured":"Nathalie Benninger Claude-Alain Despland Pierre Degott and Edgar M\u00fcller. 2005. Method and Means for Producing a Magnetically Induced Design in a Coating Containing Magnetic Particles. Patent WO\/2005\/002866.  Nathalie Benninger Claude-Alain Despland Pierre Degott and Edgar M\u00fcller. 2005. Method and Means for Producing a Magnetically Induced Design in a Coating Containing Magnetic Particles. Patent WO\/2005\/002866."},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/357290.357293"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/1778765.1778799"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-15555-0_34"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1145\/1833349.1778798"},{"key":"e_1_2_2_7_1","unstructured":"Matthias B. Hullin Ivo Ihrke Wolfgang Heidrich Tim Weyrich Gerwin Damberg and Martin Fuchs. 2013. State of the Art in Computational Fabrication and Display of Material Appearance. In Eurographics State of the Art Reports. 137--153.  Matthias B. Hullin Ivo Ihrke Wolfgang Heidrich Tim Weyrich Gerwin Damberg and Martin Fuchs. 2013. State of the Art in Computational Fabrication and Display of Material Appearance. 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Patent 5364689."},{"key":"e_1_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms9643"},{"key":"e_1_2_2_11_1","doi-asserted-by":"publisher","DOI":"10.1145\/2461912.2461989"},{"key":"e_1_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.1145\/2461912.2461981"},{"key":"e_1_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.1145\/1618452.1618474"},{"key":"e_1_2_2_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-8659.2011.01876.x"},{"key":"e_1_2_2_15_1","doi-asserted-by":"publisher","DOI":"10.1145\/2461912.2461974"},{"key":"e_1_2_2_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-8659.2012.03152.x"},{"key":"e_1_2_2_17_1","unstructured":"Roger Phillips Charlotte LeGallee Charles Markantes Paul Coombs and Matthew Witzman. 2004. Methods for Producing Imaged Coated Articles by Using Magnetic Pigments. Patent 6759097.  Roger Phillips Charlotte LeGallee Charles Markantes Paul Coombs and Matthew Witzman. 2004. Methods for Producing Imaged Coated Articles by Using Magnetic Pigments. Patent 6759097."},{"key":"e_1_2_2_18_1","unstructured":"Burt Pratt and Paul Salzberg. 1947. Process for Orienting Ferromagnetic Flakes in Paint Films. Patent 2418479.  Burt Pratt and Paul Salzberg. 1947. Process for Orienting Ferromagnetic Flakes in Paint Films. Patent 2418479."},{"key":"e_1_2_2_19_1","unstructured":"Vladimir P. Raksha Charles T. Markantes Paul G. Coombs and Dishuan Chu. 2007. Robust Multilayer Magnetic Pigments and Foils. Patent 7285336.  Vladimir P. Raksha Charles T. Markantes Paul G. Coombs and Dishuan Chu. 2007. Robust Multilayer Magnetic Pigments and Foils. Patent 7285336."},{"key":"e_1_2_2_20_1","unstructured":"Vladimir P. Raksha Charles T. Markantes Paul G. Coombs Roger W. Phillips Paul T. Kohmann Alberto Argoitia and Neil Teitelbaum. 2009. Anisotropic Magnetic Flakes. Patent Application 20090072185.  Vladimir P. Raksha Charles T. Markantes Paul G. Coombs Roger W. Phillips Paul T. 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