An Empirically Derived Adjustable Model for Particle Size Distributions in Advection Fog

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dc.contributor.authorKolárová, Monikaen_US
dc.contributor.authorLachiver, Loïcen_US
dc.contributor.authorWilkie, Alexanderen_US
dc.contributor.editorBermano, Amit H.en_US
dc.contributor.editorKalogerakis, Evangelosen_US
dc.date.accessioned2024-04-30T09:07:40Z
dc.date.available2024-04-30T09:07:40Z
dc.date.issued2024
dc.description.abstractRealistically modelled atmospheric phenomena are a long-standing research topic in rendering. While significant progress has been made in modelling clear skies and clouds, fog has often been simplified as a medium that is homogeneous throughout, or as a simple density gradient. However, these approximations neglect the characteristic variations real advection fog shows throughout its vertical span, and do not provide the particle distribution data needed for accurate rendering. Based on data from meteorological literature, we developed an analytical model that yields the distribution of particle size as a function of altitude within an advection fog layer. The thickness of the fog layer is an additional input parameter, so that fog layers of varying thickness can be realistically represented. We also demonstrate that based on Mie scattering, one can easily integrate this model into a Monte Carlo renderer. Our model is the first ever non-trivial volumetric model for advection fog that is based on real measurement data, and that contains all the components needed for inclusion in a modern renderer. The model is provided as open source component, and can serve as reference for rendering problems that involve fog layers.en_US
dc.description.number2
dc.description.sectionheadersRendering Natural Phenomena
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume43
dc.identifier.doi10.1111/cgf.15008
dc.identifier.issn1467-8659
dc.identifier.pages10 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.15008
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf15008
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectCCS Concepts: Computing methodologies -> Computer graphics
dc.subjectComputing methodologies
dc.subjectComputer graphics
dc.titleAn Empirically Derived Adjustable Model for Particle Size Distributions in Advection Fogen_US
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