Computation of Shortest Paths on Free-Form Parametric Surfaces

Author:

Maekawa T.1

Affiliation:

1. Department of Ocean Engineering, Massachusetts Institute of Technology, Design Laboratory, Cambridge, MA 02139-4307

Abstract

Computation of shortest paths on free-form surfaces is an important problem in ship design, robot motion planning, computation of medial axis transforms of trimmed surface patches, terrain navigation and NC machining. The objective of this paper is to provide an efficient and reliable method for computing the shortest path between two points on a free-form parametric surface and the shortest path between a point and a curve on a free-form parametric surface. These problems can be reduced to solving a two point boundary value problem. Our approach for solving the two point boundary value problem is based on a relaxation method relying on finite difference discretization. Examples illustrate our method.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Reference16 articles.

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3. Dahlquist, G., and Bjo¨rck, A., Numerical Methods, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1974.

4. do Carmo, P. M., Differential Geometry of Curves and Surfaces, Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1976.

5. Ferziger, J. H., Numerical Methods for Engineering Applications, Wiley, 1981.

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