Fast Photo-Realistic Rendering of Trees in Daylight

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dc.contributor.authorQin, Xueyingen_US
dc.contributor.authorNakamae, Eihachiroen_US
dc.contributor.authorTadamura, Katsumien_US
dc.contributor.authorNagai, Yasuoen_US
dc.date.accessioned2015-02-16T08:00:55Z
dc.date.available2015-02-16T08:00:55Z
dc.date.issued2003en_US
dc.description.abstractWe propose a fast approach for photo-realistic rendering of trees under various kinds of daylight, which is particularlyuseful for the environmental assessment of landscapes. In our approach the 3D tree models are transformedto a quasi-3D tree database registering geometrical and shading information of tree surfaces, i.e. their normalvectors, relative depth, and shadowing of direct sunlight and skylight, by using a combination of 2D buffers.Thus the rendering speed of quasi-3D trees depends on their display sizes only, regardless of the complexity oftheir original 3D tree models. By utilizing a two-step shadowing algorithm, our proposed method can create highquality forest scenes illuminated by both sunlight and skylight at a low cost. It can generate both umbrae andpenumbrae on a tree cast by other trees and any other objects such as buildings or clouds. Transparency, specularreflection and inter-reflection of leaves, which influence the delicate shading effects of trees, can also be simulatedwith verisimilitude.Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three dimensional Graphics and Realismen_US
dc.description.number3en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume22en_US
dc.identifier.doi10.1111/1467-8659.00671en_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages243-252en_US
dc.identifier.urihttps://doi.org/10.1111/1467-8659.00671en_US
dc.publisherBlackwell Publishers, Inc and the Eurographics Associationen_US
dc.titleFast Photo-Realistic Rendering of Trees in Daylighten_US
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