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In particular, the ability to add intentional, but often unrealistic, shading effects is indispensable for many applications. We propose a set of simple stylized shading algorithms that allow the user to freely add localized light and shade to a model in a manner that is consistent and seamlessly integrated with conventional lighting techniques. The algorithms provide an intuitive, direct manipulation method based on a paint-brush metaphor, to control and edit the light and shade locally as desired. Our prototype system demonstrates how our method can enhance both the quality and range of applicability of conventional stylized shading for offline animation and interactive applications.<\/jats:p>","DOI":"10.1145\/1276377.1276399","type":"journal-article","created":{"date-parts":[[2007,9,14]],"date-time":"2007-09-14T13:44:55Z","timestamp":1189777495000},"page":"17","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":39,"title":["Locally controllable stylized shading"],"prefix":"10.1145","volume":"26","author":[{"given":"Hideki","family":"Todo","sequence":"first","affiliation":[{"name":"The University of Tokyo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ken-ichi","family":"Anjyo","sequence":"additional","affiliation":[{"name":"OLM Digital, Inc."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William","family":"Baxter","sequence":"additional","affiliation":[{"name":"OLM Digital, Inc."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takeo","family":"Igarashi","sequence":"additional","affiliation":[{"name":"The University of Tokyo"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2007,7,29]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/VISUAL.2003.1250392"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/1124728.1124750"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/1124728.1124749"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/965141.563893"},{"key":"e_1_2_2_5_1","volume-title":"Constructive Theory of Functions of Several Variables number 571 in Lecture Notes in Mathematics","author":"Duchon J.","unstructured":"Duchon , J. 1977. 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