NDLI: Collision detection algorithm for NURBS surfaces in interactive applications

Content Provider	IEEE Xplore Digital Library
Author	Page, F. Guibault, F.
Copyright Year	2003
Description	Author affiliation: Dept. de genie informatique, Ecole Polytech. de Montreal, Que., Canada (Page, F.; Guibault, F.)
Abstract	Video games have reached a new level of realism. Programmable shading, 3D physics simulation and curved surfaces will soon become standard features. Real time collision detection, needed for this kind of application, is a difficult problem with no known optimal solution. We present a new algorithm for interactive collision detection between dynamic NURBS surfaces. It is intended to be used in real time applications, particularly in 3D video games embedded in an environment governed by simulated physical laws. This algorithm creates oriented bounding boxes (or OBB) on the fly with the surface control points and tests them for overlapping. If this test fails, the surfaces are subdivided into smaller NURBS surfaces and the algorithm is called recursively on these new surfaces. It stops when a certain precision level is reached, that is user definable as a function of the application. The results are the world space coordinates of the contact point, and the (u, v) parametric coordinates on both surfaces. The use of OBB allows for fast and memory efficient collision tests. The construction of an OBB with the surface's control points is simple and leads to a tight fitting bounding volume, which is the key of this fast collision detection algorithm.
Starting Page	1417
Ending Page	1420
File Size	286204
Page Count	4
File Format	PDF
ISBN	0780377818
ISSN	08407789
DOI	10.1109/CCECE.2003.1226166
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-04
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detection algorithms Spline Surface topography Surface reconstruction Testing Games Physics Shape Object detection Acceleration
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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