Object Recreation from Facet Representation to IGES and Primitive Representations

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0147-08-C-7941
Agency Tracking Number: 053-1544
Amount: $748,841.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2005
Solicitation Topic Code: MDA05-047
Solicitation Number: 2005.3
Small Business Information
401 Serenity Ct SE, Albuquerque, NM, 87123
DUNS: 092174635
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Harry Voorhees
 Senior Research Scientist
 (978) 475-5279
 hlv@stellarscience.com
Business Contact
 Conrad Poelman
Title: Owner
Phone: (505) 453-2713
Email: 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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