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dc.contributor.authorArgudo Medrano, Óscar
dc.contributor.authorAndújar Gran, Carlos Antonio
dc.contributor.authorChica Calaf, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciències de la Computació
dc.date.accessioned2019-10-14T09:50:38Z
dc.date.available2020-07-09T00:26:19Z
dc.date.issued2020-02
dc.identifier.citationArgudo, O.; Andújar, C.; Chica, A. Image-based tree variations. "Computer graphics forum", Febrer 2020, vol. 39, núm. 1, p. 174-184.
dc.identifier.issn1467-8659
dc.identifier.urihttp://hdl.handle.net/2117/170051
dc.description.abstractThe automatic generation of realistic vegetation closely reproducing the appearance of specific plant species is still a challenging topic in computer graphics. In this paper, we present a new approach to generate new tree models from a small collection of frontal RGBA images of trees. The new models are represented either as single billboards (suitable for still image generation in areas such as architecture rendering) or as billboard clouds (providing parallax effects in interactive applications). Key ingredients of our method include the synthesis of new contours through convex combinations of exemplar countours, the automatic segmentation into crown/trunk classes and the transfer of RGBA colour from the exemplar images to the synthetic target. We also describe a fully automatic approach to convert a single tree image into a billboard cloud by extracting superpixels and distributing them inside a silhouette-defined 3D volume. Our algorithm allows for the automatic generation of an arbitrary number of tree variations from minimal input, and thus provides a fast solution to add vegetation variety in outdoor scenes.
dc.format.extent11 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Informàtica::Infografia
dc.subject.lcshColor computer graphics
dc.subject.lcshThree dimensional imaging
dc.subject.lcshRendering (Computer graphics)
dc.subject.otherImage-based modelling
dc.subject.otherModelling
dc.subject.otherImage-based rendering
dc.titleImage-based tree variations
dc.typeArticle
dc.subject.lemacInfografia en color
dc.subject.lemacInfografia tridimensional
dc.contributor.groupUniversitat Politècnica de Catalunya. ViRVIG - Grup de Recerca en Visualització, Realitat Virtual i Interacció Gràfica
dc.identifier.doi10.1111/cgf.13752
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/abs/10.1111/cgf.13752
dc.rights.accessOpen Access
local.identifier.drac25735026
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/TIN2017-88515-C2-1-R
local.citation.authorArgudo, O.; Andújar, C.; Chica, A.
local.citation.publicationNameComputer graphics forum
local.citation.volume39
local.citation.number1
local.citation.startingPage174
local.citation.endingPage184


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