Show simple item record

dc.contributor.authorHennessey, James W.*
dc.contributor.authorLiu, Han*
dc.contributor.authorWinnemöller, Holger*
dc.contributor.authorDontcheva, Mira*
dc.contributor.authorMitra, Niloy J.*
dc.date.accessioned2017-11-02T09:09:33Z
dc.date.available2017-11-02T09:09:33Z
dc.date.issued2017-02-10en
dc.identifier.citationHennessey JW, Liu H, Winnemöller H, Dontcheva M, Mitra NJ (2017) How2Sketch. Proceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games - I3D ’17. Available: http://dx.doi.org/10.1145/3023368.3023371.en
dc.identifier.doi10.1145/3023368.3023371en
dc.identifier.urihttp://hdl.handle.net/10754/626095
dc.description.abstractAccurately drawing 3D objects is difficult for untrained individuals, as it requires an understanding of perspective and its effects on geometry and proportions. Step-by-step tutorials break the complex task of sketching an entire object down into easy-to-follow steps that even a novice can follow. However, creating such tutorials requires expert knowledge and is time-consuming. As a result, the availability of tutorials for a given object or viewpoint is limited. How2Sketch (H2S) addresses this problem by automatically generating easy-to-follow tutorials for arbitrary 3D objects. Given a segmented 3D model and a camera viewpoint, H2S computes a sequence of steps for constructing a drawing scaffold comprised of geometric primitives, which helps the user draw the final contours in correct perspective and proportion. To make the drawing scaffold easy to construct, the algorithm solves for an ordering among the scaffolding primitives and explicitly makes small geometric modifications to the size and location of the object parts to simplify relative positioning. Technically, we formulate this scaffold construction as a single selection problem that simultaneously solves for the ordering and geometric changes of the primitives. We generate different tutorials on man-made objects using our method and evaluate how easily the tutorials can be followed with a user study.en
dc.description.sponsorshipWe thank our reviewers for their invaluable comments and the user study participants for their time and feedback. We also thank Daichi Ito, Paul Guerrero, Moos Hueting, Carlo Innamorati, Aron Monszpart, Tuanfeng Yang Wang, Tom Kelly, Bongjin Koo and Martin Kilian for their help, comments and ideas. This work was partially funded by the ERC Starting Grant SmartGeometry (StG-2013-335373), EPSRC EngD Centre EP/G037159/1 and gifts from Adobe.en
dc.publisherACM Pressen
dc.relation.urlhttps://dl.acm.org/citation.cfm?doid=3023368.3023371en
dc.rightsArchived with thanks to Proceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games - I3D '17en
dc.subjectShape analysisen
dc.subjectSketchingen
dc.subjectTutorialsen
dc.titleHow2Sketchen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division*
dc.contributor.departmentComputer Science Program*
dc.identifier.journalProceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games - I3D '17en
dc.conference.date2017-02-25 to 2017-02-27en
dc.conference.name21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, I3D 2017en
dc.conference.locationSan Francisco, CA, USAen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionUniversity College London*
dc.contributor.institutionAdobe Research*
kaust.personLiu, Han*
refterms.dateFOA2018-06-13T13:16:25Z


Files in this item

Thumbnail
Name:
a8-hennessey.pdf
Size:
60.03Mb
Format:
PDF
Description:
Main article

This item appears in the following Collection(s)

Show simple item record