Sketch Abstractions for Character Posing

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dc.contributor.authorHahn, Fabianen_US
dc.contributor.authorMutzel, Frederiken_US
dc.contributor.authorCoros, Stelianen_US
dc.contributor.authorThomaszewski, Bernharden_US
dc.contributor.authorNitti, Maurizioen_US
dc.contributor.authorGross, Markusen_US
dc.contributor.authorSumner, Robert W.en_US
dc.contributor.editorFlorence Bertails-Descoubes and Stelian Coros and Shinjiro Suedaen_US
dc.date.accessioned2016-01-19T09:01:39Z
dc.date.available2016-01-19T09:01:39Z
dc.date.issued2015en_US
dc.description.abstractWe propose a sketch-based posing system for rigged 3D characters that allows artists to create custom sketch abstractions on top of a character's actual shape. A sketch abstraction is composed of rigged curves that form an iconographic 2D representation of the character from a particular viewpoint. When provided with a new input sketch, our optimization system minimizes a nonlinear iterative closest point energy to find the rigging parameters that best align the character's sketch abstraction to the input sketch. A custom regularization term addresses the underconstrained nature of the problem to select favorable poses. Although our system supports arbitrary black-box rigs, we show how to optimize computations when rigging formulas and derivatives are available. We demonstrate our system's flexibility with examples showing different artist-designed sketch abstractions for both full body posing and the customization of individual components of a modular character. Finally, we show that simple sketch abstractions can be built on the fly by projecting a drawn curve onto the character's mesh. Redrawing the curve allows the user to dynamically pose the character. Taken together, our system enables a new form of intuitive sketch-based posing in which the character designer has the freedom to prescribe the sketch abstraction that is most meaningful for the character.en_US
dc.description.sectionheadersRigsen_US
dc.description.seriesinformationACM/ Eurographics Symposium on Computer Animationen_US
dc.identifier.doi10.1145/2786784.2786785en_US
dc.identifier.isbn978-1-4503-3496-9en_US
dc.identifier.pages185-192en_US
dc.identifier.urihttps://doi.org/10.1145/2786784.2786785en_US
dc.publisherACM Siggraphen_US
dc.subjectsketchen_US
dc.subjectbased posingen_US
dc.subjectcharacter individualizationen_US
dc.titleSketch Abstractions for Character Posingen_US
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SCA 15: Eurographics/SIGGRAPH Symposium on Computer Animation