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dc.contributor.authorRebollo Santamaría, Cristina
dc.contributor.authorRemolar, Inmaculada
dc.contributor.authorGumbau Portalés, Jesús
dc.contributor.authorChover Sellés, Miguel
dc.identifier.citationREBOLLO SANTAMARÍA, Cristina; REMOLAR QUINTANA, Inmaculada; GUMBAU PORTALÉS, Jesús; CHOVER SELLÉS, Miguel. Three-dimensional trees for virtual globes. International Journal of Digital Earth (2014), v. 7, issue 10, pp. 789-810ca_CA
dc.description.abstractOne of the problems in virtual globes technologies is the real-time representation of vegetal species. In forest or garden representations, the low detailed plants produce a lack of realism. Efficient techniques are required to achieve accurate interactive visualisation due to the great number of polygons the vegetal species have. This article presents a multi-resolution model based on a geometric representation of vegetal species that allows the application to perform the progressive transmission of the model, that is, the transmission of a simple representation followed by successive refinements of it. It has a hardware-oriented design in order to obtain interactive frame rates. The geometric data of the objects are stored in the graphics processing unit and, moreover, the change from one approximation to another is obtained by performing mathematical calculations in this graphics hardware. The multi-resolution model presented here enables instancing: as many vegetal species as desired can be rendered with different levels of detail, while all of them are accessing the same geometric data. This model has been used to build a real-time representation of a not imaginary scenario.ca_CA
dc.description.sponsorShipThis work was supported by the Spanish Ministry of Science and Technology (Project TIN2010-21089-C03-03) and Feder Funds and Generalitat Valenciana (Project PROMETEO/2010/028).ca_CA
dc.format.extent22 p.ca_CA
dc.publisherTaylor & Francisca_CA
dc.relation.isPartOfInternational Journal of Digital Earth (2014), v. 7, issue 10ca_CA
dc.subjectVirtual globesca_CA
dc.subjectReal-time renderingca_CA
dc.subjectVegetal speciesca_CA
dc.subjectLevel of detailca_CA
dc.subjectGraphics hardwareca_CA
dc.subjectProgressive transmissionca_CA
dc.titleThree-dimensional trees for virtual globesca_CA

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