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Graph."],"published-print":{"date-parts":[[2018,8,31]]},"abstract":"<jats:p>\n            We present an interactive approach for\n            <jats:italic>inking<\/jats:italic>\n            , which is the process of turning a pencil rough sketch into a clean line drawing. The approach, which we call the\n            <jats:bold>Smart Inker<\/jats:bold>\n            , consists of several \"smart\" tools that intuitively react to user input, while guided by the input rough sketch, to efficiently and naturally connect lines, erase shading, and fine-tune the line drawing output. Our approach is data-driven: the tools are based on fully convolutional networks, which we train to exploit both the user edits and inaccurate rough sketch to produce accurate line drawings, allowing high-performance interactive editing in real-time on a variety of challenging rough sketch images. For the training of the tools, we developed two key techniques: one is the creation of training data by simulation of vague and quick user edits; the other is a line normalization based on learning from vector data. These techniques, in combination with our sketch-specific data augmentation, allow us to train the tools on heterogeneous data without actual user interaction. We validate our approach with an in-depth user study, comparing it with professional illustration software, and show that our approach is able to reduce inking time by a factor of 1.8X, while improving the results of amateur users.\n          <\/jats:p>","DOI":"10.1145\/3197517.3201370","type":"journal-article","created":{"date-parts":[[2018,7,31]],"date-time":"2018-07-31T15:56:23Z","timestamp":1533052583000},"page":"1-14","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":42,"title":["Real-time data-driven interactive rough sketch inking"],"prefix":"10.1145","volume":"37","author":[{"given":"Edgar","family":"Simo-Serra","sequence":"first","affiliation":[{"name":"Waseda University"}]},{"given":"Satoshi","family":"Iizuka","sequence":"additional","affiliation":[{"name":"Waseda University"}]},{"given":"Hiroshi","family":"Ishikawa","sequence":"additional","affiliation":[{"name":"Waseda University"}]}],"member":"320","published-online":{"date-parts":[[2018,7,30]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/TPAMI.2002.1114862"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/1449715.1449740"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.patrec.2014.01.011"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/cgf.12164"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.3138\/FM57-6770-U75U-7727"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1109\/TPAMI.1979.4766880"},{"key":"e_1_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.1145\/2185520.2185540"},{"key":"e_1_2_2_8_1","doi-asserted-by":"publisher","DOI":"10.1145\/2897824.2925946"},{"key":"e_1_2_2_9_1","volume-title":"ShipShape: A Drawing Beautification Assistant. 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