Simulating Natural Light

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dc.contributor.authorWu, Jintongen_US
dc.date.accessioned2014-10-21T06:18:38Z
dc.date.available2014-10-21T06:18:38Z
dc.date.issued1990en_US
dc.description.abstractSimulating natural light is an interesting subject in computer graphics. Using the principles of meteorology, we build a sphere cap light source model. Unlike existing illumination or light source models, we consider the effects of both the ratio of direct light to diffuse light and the position of the sun under different weather conditions. We use an area light source to generate shadows and a point light source to generate the other effects. The ratio of the two types of light is adjusted by a brightness factor b while the position of the sun is determined by giving the light direction. In addition. a modifiable sphere cap is used to obtain modified penumbra which vary with illumination.en_US
dc.description.number4en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume9en_US
dc.identifier.doi10.1111/j.1467-8659.1990.tb00426.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages349-353en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.1990.tb00426.xen_US
dc.publisherBlackwell Publishing Ltd and the Eurographics Associationen_US
dc.titleSimulating Natural Lighten_US
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