Geometric Flows of Curves in Shape Space for Processing Motion of Deformable Objects

dc.contributor.authorBrandt, Christopheren_US
dc.contributor.authorTycowicz, Christoph vonen_US
dc.contributor.authorHildebrandt, Klausen_US
dc.contributor.editorJoaquim Jorge and Ming Linen_US
dc.date.accessioned2016-04-26T08:38:31Z
dc.date.available2016-04-26T08:38:31Z
dc.date.issued2016en_US
dc.description.abstractWe introduce techniques for the processing of motion and animations of non-rigid shapes. The idea is to regard animations of deformable objects as curves in shape space. Then, we use the geometric structure on shape space to transfer concepts from curve processing in Rn to the processing of motion of non-rigid shapes. Following this principle, we introduce a discrete geometric flow for curves in shape space. The flow iteratively replaces every shape with a weighted average shape of a local neighborhood and thereby globally decreases an energy whose minimizers are discrete geodesics in shape space. Based on the flow, we devise a novel smoothing filter for motions and animations of deformable shapes. By shortening the length in shape space of an animation, it systematically regularizes the deformations between consecutive frames of the animation. The scheme can be used for smoothing and noise removal, e.g., for reducing jittering artifacts in motion capture data. We introduce a reduced-order method for the computation of the flow. In addition to being efficient for the smoothing of curves, it is a novel scheme for computing geodesics in shape space. We use the scheme to construct non-linear ''Bézier curves'' by executing de Casteljau's algorithm in shape space.en_US
dc.description.number2en_US
dc.description.sectionheadersCurves & Surfacesen_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume35en_US
dc.identifier.doi10.1111/cgf.12832en_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages295-305en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12832en_US
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectI.3.5 [Computer Graphics]en_US
dc.subjectComputational Geometry and Object Modelingen_US
dc.subjectPhysically based modelingen_US
dc.titleGeometric Flows of Curves in Shape Space for Processing Motion of Deformable Objectsen_US
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