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CAGD
2011
13 years 3 months ago
Generalized shape operators on polyhedral surfaces
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...
Klaus Hildebrandt, Konrad Polthier
TSMC
2008
225views more  TSMC 2008»
13 years 11 months ago
Robust Methods for Geometric Primitive Recovery and Estimation From Range Images
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...
Irina Lavva, Eyal Hameiri, Ilan Shimshoni
CAGD
2006
103views more  CAGD 2006»
13 years 11 months ago
The implicit structure of ridges of a smooth parametric surface
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...
Frédéric Cazals, Jean-Charles Faug&e...
ICCV
1995
IEEE
14 years 3 months ago
Estimating the Tensor of Curvature of a Surface from a Polyhedral Approximation
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...
Gabriel Taubin
SMA
2009
ACM
141views Solid Modeling» more  SMA 2009»
14 years 4 months ago
Robust principal curvatures using feature adapted integral invariants
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...
Yu-Kun Lai, Shi-Min Hu, Tong Fang
SIBGRAPI
2006
IEEE
14 years 5 months ago
Curvature-driven Modeling and Rendering of Point-Based Surfaces
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...
Joao Paulo Gois, Eduardo Tejada, Tiago Etiene, Lui...
IROS
2008
IEEE
131views Robotics» more  IROS 2008»
14 years 5 months ago
Deformations of general parametric shells: Computation and robot experiment
— 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...
Yan-Bin Jia, Jiang Tian