3D Shape Modelling Using a Multi-Scale Surface Model
X. Shen, M. Spann
Proc. ICIP 97, Santa-Barbara, USA, Vol. 2, pp. 478-482, 1997
Abstract
This paper presents a method for extracting the 3D shape of objects from
3D grey level images The object surface is assumed to be described by a
bicubic B-spline surface. The detection of the object shape is achieved
using a hierarchical approach in which the object surface is successively
estimated using the spline model at increased scales. at each scale, the
model is iteratively fitted to a set of measurement point which are believed
to be on the object surface. The measurement point are detected buy searching
for voxels with the strongest edge response along the direction normal
to model surface. Searching for measurement points is controlled within
a search radius determined based on the edge strength at the points on
the current model surface. The result is a parametric surface approximating
the object surface to be detected.
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