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Chapter and Conference Paper
On the reconstruction of urban house roofs from aerial images
A method is presented to automatically generate 3D models of house roofs from aerial images of residential areas in urban sites. Following the methodology of (Bignone et al. 1996) a house roof is modelled as a...
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Article
Semi-local projective invariants for the recognition of smooth plane curves
Recently, several methods have been proposed for describing plane, non-algebraic curves in a projectively invariant fashion. These curve representations are invariant under changes in viewpoint and therefore i...
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Article
Viewpoint invariant characteristics of articulated objects
The aim of this paper is to investigate whether it is possible to construct invariants for articulated objects—these are objects that are composed of different rigid parts which are allowed to perform a restri...
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Article
Recognition of planar shapes under affine distortion
Methods for the recognition ofplanar shapes from arbitrary viewpoints are described. The adopted model of projection is orthographic. The invariant descriptions derived for this group are one-dimensional shape si...
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Article
Foundations of semi-differential invariants
This paper elaborates the theoretical foundations of a semi-differential framework for invariance. Semi-differential invariants combine coordinates and their derivatives with respect to some contour parameter ...
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Chapter and Conference Paper
Geometry-Driven Diffusion: Coupled Diffusion Maps as a Model for Excitatory and Inhibitory Behaviour in Vision
We investigate the potential of coupled non-linear diffusion processes to provide an efficient and implementable model for the processing that takes place in the first stages along the visual pathway, and stud...
