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Geometric models are usually distinguished from [[procedural modeling|procedural]] and [[object-oriented modeling|object-oriented model]]s, which define the shape implicitly by an opaque [[algorithm]] that generates its appearance.{{citation needed|date=August 2014}} They are also contrasted with [[digital image]]s and [[volumetric model]]s which represent the shape as a subset of a fine regular partition of space; and with [[fractal]] models that give an infinitely recursive definition of the shape. However, these distinctions are often blurred: for instance, a [[digital image]] can be interpreted as a collection of [[color]]ed [[square (geometry)|square]]s; and geometric shapes such as [[circle]]s are defined by implicit mathematical equations. Also, a [[fractal]] model yields a parametric or implicit model when its recursive definition is truncated to a finite depth.
Notable awards of the area are the John A. Gregory Memorial Award<ref>{{Cite web |url=http://geometric-modelling.org |access-date=2025-07-08 |website=geometric-modelling.org | title=John A. Gregory Memorial Award}}</ref> and the Bézier award.<ref>{{Cite web |url=http://www.solidmodeling.org/bezier_award.html |title=Archived copy |access-date=2014-06-20 |archive-date=2014-07-15 |archive-url=https://web.archive.org/web/20140715121544/http://www.solidmodeling.org/bezier_award.html |url-status=dead }}</ref>
==See also==
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