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Patent

Method and system for creating irregular three-dimensional polygonal volume models in a three-dimensional geographic information system

John D. Grace
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TLDR
In this article, a 3D polygonal model of a 3-D irregular volume within a GIS platform is constructed by introducing data relating to the volume, estimating at least one 2-D polygons representing the volume's lateral boundary, clipping the estimated surfaces with the estimated 2-dimensional polygon, and constructing multipatches of a network of triangular panels or a grid of regularly spaced polylineZs.
Abstract
Methods, and models therefrom, to construct a 3-D polygonal model of a 3-D irregular volume within a GIS platform that include introducing data relating to the volume; estimating at least one 2-D polygon representing the volume's lateral boundary, estimating irregular surfaces representing the volume's top and bottom; clipping the estimated surfaces with the estimated 2-D polygon; constructing multipatches of a network of triangular panels or a grid of regularly spaced polylineZs; and joining the attributes to the model.

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References
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Process for three-dimensional mathematical modeling of underground geologic volumes

TL;DR: In this paper, a process for modeling a bounded volume having a given geologic stratigraphic pattern, other than a volume having layers of uniform thickness parallel to mean sea level, is described.
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