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Findings on Geoscience Described by J.M. Liang and Colleagues (Visualizing 3D atmospheric data with spherical volume texture on virtual globes)

July 22, 2014

By a News Reporter-Staff News Editor at Journal of Mathematics -- Data detailed on Science have been presented. According to news reporting from Beijing, People's Republic of China, by VerticalNews journalists, research stated, "Volumetric ray-casting is a widely used algorithm in volume visualization, but implementing this algorithm to render atmospheric volume data that cover a large area on virtual globes constitutes a challenging problem. Because atmospheric data are usually georeferenced to a spherical coordinate system described by longitude, latitude and altitude, adaptations to the conventional volumetric raycasting method are needed to accommodate spherical volume texture sampling."

The news correspondents obtained a quote from the research, "In this paper, we present a volumetric ray-casting framework to visualize atmospheric data that cover a broad but thin geographic area (because of the thinness of Earth's atmosphere). Volume texture conforming to the spherical coordinate system of a virtual globe can be created directly from the spherical volume data to avoid oversampling, undersampling or a loss of accuracy due to reprojecting and resampling such data into a Cartesian coordinate system. Considering the insignificant physical thickness of the atmosphere of the Earth, the ray-casting method presented in this paper also allows for real-time vertical scaling (exaggeration of the altitudinal range) without the need to re-process the volume texture, enabling convenient visual observation of the altitudinal variations."

According to the news reporters, the research concluded: "The spherical volume ray-casting method is implemented in a deferred rendering framework to integrate the volume effects into a virtual globe composed of a variety of background geospatial data objects, such as terrain, imagery, vector shapes and 3D geometric models."

For more information on this research see: Visualizing 3D atmospheric data with spherical volume texture on virtual globes. Computers & Geosciences, 2014;68():81-91. Computers & Geosciences can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier -; Computers & Geosciences -

Our news journalists report that additional information may be obtained by contacting J.M. Liang, Zhejiang CAS Applicat Center Geoinformat, Beijing 314100, People's Republic of China. Additional authors for this research include J.H. Gong, W.H. Li and A.N. Ibrahim.

Keywords for this news article include: Asia, Beijing, Science, People's Republic of China

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Source: Journal of Mathematics

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