Accession Number:

AD0755139

Title:

Representation and Description of Curved Objects

Descriptive Note:

Corporate Author:

STANFORD UNIV CA DEPT OF COMPUTER SCIENCE

Personal Author(s):

Report Date:

1972-10-01

Pagination or Media Count:

140.0

Abstract:

Three dimensional images, similar to depth maps, are obtained with a triangulation system using a television camera, and a deflectable laser beam diverged into a plane by a cylindrical lens. Complex objects are represented as structures joining parts called generalized cylinders. These primitives are formalized in a volume representation by an arbitrary cross section varying along a space curve axis. Several types of joint structures are discussed. Experimental results are shown for the description building of internal computer models of a handful of complex objects, beginning with laser range data from actual objects. Our programs have generated complete descriptions of rings, cones, and snake-like objects, all of which may be described by a single primitive. Complex objects, such as dolls, have been segmented into parts, most of which are well described by programs which implement generalized cylinder descriptions.

Subject Categories:

  • Bionics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE