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Structuring and layering contour drawings of organic shapes

hal.structure.identifierStructural Models and Tools in Computer Graphics [IRIT-STORM]
hal.structure.identifierIntuitive Modeling and Animation for Interactive Graphics & Narrative Environments [IMAGINE ]
dc.contributor.authorENTEM, Even
hal.structure.identifierAdvanced Geometric Computing Lab [AGCL]
hal.structure.identifierIndian Institute of Technology Madras [IIT Madras]
dc.contributor.authorPARAKKAT, Amal
hal.structure.identifierLaboratoire d'informatique de l'École polytechnique [Palaiseau] [LIX]
dc.contributor.authorCANI, Marie-Paule
hal.structure.identifierVisual Objects from Reality To Expression [IRIT-VORTEX]
hal.structure.identifierMelting the frontiers between Light, Shape and Matter [MANAO]
dc.contributor.authorBARTHE, Loic
dc.date.accessioned2023-05-12T10:49:18Z
dc.date.available2023-05-12T10:49:18Z
dc.date.conference2018-08-17
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181794
dc.description.abstractEnComplex vector drawings serve as convenient and expressive visual representations, but they remain difficult to edit or manipulate. For clean-line vector drawings of smooth organic shapes, we describe a method to automatically extract a layered structure for the drawn object from the current or nearby viewpoints. The layers correspond to salient regions of the drawing, which are often naturally associated to 'parts' of the underlying shape. We present a method that automatically extracts salient structure, organized as parts with relative depth orderings, from clean-line vector drawings of smooth organic shapes. Our method handles drawings that contain complex internal contours with T-junctions indicative of occlusions, as well as internal curves that may either be expressive strokes or substructures. To extract the structure, we introduce a new part-aware metric for complex 2D drawings, the radial variation metric, which is used to identify salient sub-parts. These sub-parts are then considered in a priority-ordered fashion, which enables us to identify and recursively process new shape parts while keeping track of Permission to make digital their relative depth ordering. The output is represented in terms of scalable vector graphics layers, thereby enabling meaningful editing and manipulation. We evaluate the method on multiple input drawings and show that the structure we compute is convenient for subsequent posing and animation from nearby viewpoints.
dc.language.isoen
dc.publisherACM Press
dc.source.titleExpressive '18 Proceedings of the Joint Symposium on Computational Aesthetics and Sketch-Based Interfaces and Modeling and Non-Photorealistic Animation and Rendering
dc.subject.enContour completion
dc.subject.enShape segmentation
dc.subject.enVector drawing analysis
dc.title.enStructuring and layering contour drawings of organic shapes
dc.typeCommunication dans un congrès avec actes
dc.identifier.doi10.1145/3229147.3229155
dc.subject.halInformatique [cs]
dc.subject.halInformatique [cs]/Géométrie algorithmique [cs.CG]
dc.subject.halInformatique [cs]/Synthèse d'image et réalité virtuelle [cs.GR]
dc.description.sponsorshipEuropeEXPloring REsponsive Shapes for Seamless desIgn of Virtual Environments be retained.
bordeaux.page1-14
bordeaux.volume18
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.countryCA
bordeaux.title.proceedingExpressive 2018 - Joint Symposium on Computational Aesthetics and Sketch-Based Interfaces and Modeling and Non-Photorealistic Animation and Rendering
bordeaux.conference.cityVictoria
bordeaux.peerReviewedoui
hal.identifierhal-01853410
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01853410v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Expressive%20'18%20Proceedings%20of%20the%20Joint%20Symposium%20on%20Computational%20Aesthetics%20and%20Sketch-Based%20Interfaces%20and%20Modeling%20and%20Non-Photoreali&rft.volume=18&rft.spage=1-14&rft.epage=1-14&rft.au=ENTEM,%20Even&PARAKKAT,%20Amal&CANI,%20Marie-Paule&BARTHE,%20Loic&rft.genre=proceeding


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