@InProceedings{curwen:iccv98,
author = {R.\ W.\ Curwen and J.\ L.\ Mundy and C.\ V.\
Stewart},
title = {Recognition of plane projective symmetry},
booktitle = {Computer Vision, 1998. Sixth International
Conference on},
year = 1998,
pages = {1115--1122},
keywords = {computer vision, object recognition, approximate
symmetry, inflection points, plane projective
symmetry recognition, projective mapping, projective
transform, saliency measure, symmetrical planar
curves},
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},
annote = {}
}