Title
Recognition of Plane Projective Symmetry
Abstract
A novel approach to grouping symmetrical planar curves under a projective transform is described. Symmetric curves are important as a generic model for object recognition where an object class is defined by the set of symmetries that any object in the class obeys. In this paper, a new algorithm is presented for grouping curves based on their correspondence under a plane projectivity. The correspondence between curves is established from an initial correspondence between two pairs of distinguished lines, such as lines tangent to inflection points. This initial correspondence leads to a reduced dimensional form for the projective mapping between the curves and a natural method for establishing correspondence between all points on the curves. A saliency measure is introduced which permits grouping results to be ordered in terms of the degree of symmetry supported by each curve pair. This saliency measure provides a basis for recognition in the case of approximate symmetry.
Year
DOI
Venue
1998
10.1109/ICCV.1998.710856
Bombay
Keywords
Field
DocType
approximate symmetry,object recognition,grouping curve,projective mapping,plane projective symmetry,saliency measure,distinguished line,class obeys,initial correspondence,curve pair,object class,computer vision,geometry,solid modeling,inflection points,layout,computer science
Real projective plane,Computer vision,Blocking set,Line at infinity,Pencil (mathematics),Artificial intelligence,Fano plane,Duality (projective geometry),Projective plane,Mathematics,Projective space
Conference
Volume
Issue
ISBN
1998
1
81-7319-221-9
Citations 
PageRank 
References 
8
0.73
9
Authors
3
Name
Order
Citations
PageRank
Rupert W. Curwen16213.26
J. L. Mundy21352280.31
Charles V. Stewart380.73