Object Recreation from Facet Representation to IGES and Primitive Representations

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$748,841.00
Award Year:
2008
Program:
SBIR
Phase:
Phase II
Contract:
HQ0147-08-C-7941
Award Id:
78347
Agency Tracking Number:
053-1544
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
STELLAR SCIENCE LTD.CO (Currently Stellar Science Ltd Co)
401 Serenity Ct SE, Albuquerque, NM, 87123
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
092174635
Principal Investigator:
Harry Voorhees
Senior Research Scientist
(978) 475-5279
hlv@stellarscience.com
Business Contact:
Conrad Poelman
Owner
(505) 453-2713
cpdodsbir@stellarscience.com
Research Institution:
n/a
Abstract
Accurate geometric and mathematical modeling of three-dimensional object shapes is a critical component of a variety of applications, ranging from design and manufacturing, to modeling and simulation. The models used in these applications may be created using interactive Computer Aided Design (CAD) tools, by hand-editing geometry configuration files, as the outputs of automated systems such as laser ranging scanners, computer-vision-based shape-from-motion techniques, or optimized design codes. While some model formats allow higher-level representations, combining geometric primitives or bounded surfaces to represent the final 3D shape, many model sources or existing model collections contain only lower-level representations such as a facets or meshes. While conversion from higher-level to lower-level representations is common using facetization or meshing techniques, this research effort focuses on the inverse problem of generating higher-order shape representations from faceted models. This requires recognizing groups of facets that collectively represent higher-order surfaces such as cylinders, spheres, cones, and lofted curved surfaces; mathematically fitting surface equations to those facets to determine the characteristic shape parameters; and exporting the high-order representations to formats that modeling, simulation, and analysis tools can process. These techniques will enable smooth surface CAD models to be created automatically from roughly triangulated input geometries.

* information listed above is at the time of submission.

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