401 search results - page 31 / 81 » Geometry of Isophote Curves |
CAGD
1999
13 years 8 months ago
1999
We investigate surfaces which interpolate given boundary curves. We show that the discrete bilinearly blended Coons patch can be defined as the solution of a linear system. With t...
COMPGEOM
2003
ACM
14 years 2 months ago
2003
ACM
In this paper we describe and analyze a method based on local least square fitting for estimating the normals at all sample points of a point cloud data (PCD) set, in the presenc...
DGCI
2006
Springer
14 years 14 days ago
2006
Springer
Abstract. Designing interactive segmentation methods for digital volume images is difficult, mainly because efficient 3D interaction is much harder to achieve than interaction with...
DGCI
2009
Springer
14 years 1 days ago
2009
Springer
For discrete sets coded by the Freeman chain describing their contour, several linear algorithms have been designed for determining their shape properties. Most of them are based ...
COMPGEOM
2010
ACM
14 years 1 months ago
2010
ACM
We prove that the union complexity of a set of n constantcomplexity locally fat objects (which can be curved and/or non-convex) in the plane is O(λt+2(n) log n), where t is the m...