The rendering of participating media still forms a big challenge for computer graphics. This rema... more The rendering of participating media still forms a big challenge for computer graphics. This remark is particularly true for real-world clouds with their inhomogeneous density distributions, large range of spatial scales and different forms of appearance. We survey techniques for cloud visualization and classify them relative to the type of volume representation, lighting and rendering technique used. We also discuss global illumination techniques applicable to the generation of the optical effects observed in real-world cloud scenes.
Modern weather prediction models create new challenges but also offer new possibilities for weath... more Modern weather prediction models create new challenges but also offer new possibilities for weather visualization. Since weather model data has a complex three-dimensional structure and various abstract parameters it cannot be presented directly to a lay audience. Nevertheless, visualizations of weather data are needed daily for weather presentations. One important visual clue for the perception of weather is given by clouds. After a discussion of weather data and its specific demands on a graphical visualization we present an approach to visualizing clouds by means of a particle system that consists of soft balls, so-called metaballs (Dobashi et al. 2000). Particular attention is given to the special requirements of large-scale cloud visualizations. Since weather forecast data typically lacks specific information on the small-scale structure of clouds we explain how to interprete weather data in order to extract information on their appearance, thereby obtaining five visual cloud c...
The rendering of participating media still forms a big challenge for computer graphics. This rema... more The rendering of participating media still forms a big challenge for computer graphics. This remark is particularly true for real-world clouds with their inhomogeneous density distributions, large range of spatial scales and different forms of appearance. We survey techniques for cloud visualization and classify them relative to the type of volume representation, lighting and rendering technique used. We also discuss global illumination techniques applicable to the generation of the optical effects observed in real-world cloud scenes.
The rendering of participating media still forms a big challenge for computer graphics. This rema... more The rendering of participating media still forms a big challenge for computer graphics. This remark is particularly true for real-world clouds with their inhomogeneous density distributions, large range of spatial scales and different forms of appearance. We survey techniques for cloud visualization and classify them relative to the type of volume representation, lighting and rendering technique used. We also discuss global illumination techniques applicable to the generation of the optical effects observed in real-world cloud scenes.
Modern weather prediction models create new challenges but also offer new possibilities for weath... more Modern weather prediction models create new challenges but also offer new possibilities for weather visualization. Since weather model data has a complex three-dimensional structure and various abstract parameters it cannot be presented directly to a lay audience. Nevertheless, visualizations of weather data are needed daily for weather presentations. One important visual clue for the perception of weather is given by clouds. After a discussion of weather data and its specific demands on a graphical visualization we present an approach to visualizing clouds by means of a particle system that consists of soft balls, so-called metaballs (Dobashi et al. 2000). Particular attention is given to the special requirements of large-scale cloud visualizations. Since weather forecast data typically lacks specific information on the small-scale structure of clouds we explain how to interprete weather data in order to extract information on their appearance, thereby obtaining five visual cloud c...
The rendering of participating media still forms a big challenge for computer graphics. This rema... more The rendering of participating media still forms a big challenge for computer graphics. This remark is particularly true for real-world clouds with their inhomogeneous density distributions, large range of spatial scales and different forms of appearance. We survey techniques for cloud visualization and classify them relative to the type of volume representation, lighting and rendering technique used. We also discuss global illumination techniques applicable to the generation of the optical effects observed in real-world cloud scenes.
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