2009
DOI: 10.3722/cadaps.2009.575-583
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Computations on an Ellipsoid for GIS

Abstract: We describe several challenging issues related to virtual globe manipulations for GIS that highlight the important interplay between geometric modeling and scientific visualization. We begin by motivating and describing a globe tessellation algorithm designed to avoid singularities at the poles, then discuss other uses of the tessellation that enable certain types of shape modeling on the surface of the virtual globe.Keywords: level of detail modeling; Web-based retrieval, analysis and visualization.

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Cited by 2 publications
(1 citation statement)
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“…NASA World Wind developers applied a high-performance algorithm, described in Miller and Gaskins [16]. Tessellation is performed every time the terrain's resolution has to be synchronized with the current viewing state and availability of elevations [7].…”
Section: Architecturementioning
confidence: 99%
“…NASA World Wind developers applied a high-performance algorithm, described in Miller and Gaskins [16]. Tessellation is performed every time the terrain's resolution has to be synchronized with the current viewing state and availability of elevations [7].…”
Section: Architecturementioning
confidence: 99%