Refereed full papers (journals, book chapters, international conferences)

1992

@incollection{VMP1992,
	vgclass =	{refpap},
	vgproject =	{invariance},
	author =	{Van Gool, Luc J. and Theo Moons and Eric Pauwels and
	Andr\'{e} Oosterlinck},
	title =	{Semi-Differential Invariants},
	editor =	{Joseph Mundy and Andrew Zisserman},
	booktitle =	{Geometric Invariance in Computer Vision},
	address =	{Cambridge, MA, USA},
	series =	{Series: Artificial intelligence},
	pages =	{157--192},
	publisher =	{The MIT Press},
	year =	{1992},
	abstract =	{We describe algorithms for the detection of similarities
	between planar contours. Perspective projection is assumed, which
	implies that the 3D similarity transformations between the original
	contours take the form of 2D projective transformations in the image.
	Examples of tasks envisaged are object recognition and symmetry
	detection. The problems are tackled by generating contour descriptions
	which remain invariant under the projective transformations.
	Traditional approaches to this problem are briefly reviewed. We argue
	that a compromise between correspondence search and numerical
	differentiation leads to a compelling class of invariants, which we
	call ``semi-differential''. They are situated in what we regard as a
	vast wasteland between algebraic and differential geometry, and which
	seems highly promising for vision applications in general.},
}