CAGD
2011
13 years 2 months ago
2011
This work concerns the approximation of the shape operator of smooth surfaces in R3 from polyhedral surfaces. We introduce two generalized shape operators that are vector-valued l...
TSMC
2008
13 years 11 months ago
2008
We present a method for the recovery of partially occluded 3D geometric primitives from range images which might also include non-primitive objects. The method uses a technique for...
CAGD
2006
13 years 11 months ago
2006
Given a smooth surface, a blue (red) ridge is a curve such that at each of its points, the maximum (minimum) principal curvature has an extremum along its curvature line. Ridges a...
ICCV
1995
IEEE
14 years 2 months ago
1995
IEEE
Estimating principal curvatures and principal directions of a surface from a polyhedral approximation with a large number of small faces, such as those produced by iso-surface con...
SMA
2009
ACM
14 years 3 months ago
2009
ACM
Principal curvatures and principal directions are fundamental local geometric properties. They are well defined on smooth surfaces. However, due to the nature as higher order di...
SIBGRAPI
2006
IEEE
14 years 5 months ago
2006
IEEE
In this work we address the problem of computing pointbased surface approximations from point clouds. Our approach is based on recently presented methods that define the approxim...
IROS
2008
IEEE
14 years 5 months ago
2008
IEEE
— A shell is a body enclosed between two closely spaced and curved surfaces. Classical theory of shells [38], [33], [16] assumes a parametrization along the lines of principal cu...