Accession Number : ADA191541

Title :   Calculating the Principal Views of a Polyhedron.

Descriptive Note : Technical rept.,

Corporate Author : ROCHESTER UNIV NY DEPT OF COMPUTER SCIENCE

Personal Author(s) : Watts, Nancy

PDF Url : ADA191541

Report Date : Dec 1987

Pagination or Media Count : 39

Abstract : This report examines the 'principal views' of polyhedra whose images are line drawings representing the images of edges. Several definitions for useful equivalence relations on the set of viewpoints are compared. An algorithm for enumerating the faces in each of the principal views of a convex polyhedron under perspective projection is given; this algorithm admits non-trihedral vertices. An implementation of the algorithm is described. Keywords: Object recognition, Polyhedral scene analysis.

Descriptors :   *GEOMETRIC FORMS, *COMPUTATIONS, ALGORITHMS, ENGINEERING DRAWINGS, LINES(GEOMETRY), EDGES, IMAGES, RECOGNITION

Subject Categories : Numerical Mathematics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE