BMVC 2004, Kingston, 7th-9th Sept, 2004

The Visual Hull of Piecewise Smooth Objects
A. Bottino and A. Laurentini (Politecnico di Torino, Italy)

The visual hull relates the shape of an object to its silhouettes. This paper
develops the theory of the visual hull of piecewise smooth objects, as those
used in CAD applications. We show that the surface of the visual hull can be
constructed using patches of nine visual event surfaces of the aspect graph of
the object. A detailed analysis allows to prune away many surfaces and
patches that are not relevant to the construction. Examples of construction of
visual hulls are presented.
(pdf article)