
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 nontrihedral 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