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CVGIP
2002
104views more  CVGIP 2002»
13 years 6 months ago
Sharp Features on Multiresolution Subdivision Surfaces
In this paper we describe a method for creating sharp features and trim regions on multiresolution subdivision surfaces along a set of user-defined curves. Operations such as engr...
Henning Biermann, Ioana M. Martin, Denis Zorin, Fa...
COMPGEOM
2006
ACM
14 years 21 days ago
Envelope surfaces
We construct a class of envelope surfaces in Rd , more precisely envelopes of balls. An envelope surface is a closed C1 (tangent continuous) manifold wrapping tightly around the u...
Nico Kruithof, Gert Vegter
JAT
2010
109views more  JAT 2010»
13 years 5 months ago
Networks of polynomial pieces with application to the analysis of point clouds and images
We consider H¨older smoothness classes of surfaces for which we construct piecewise polynomial approximation networks, which are graphs with polynomial pieces as nodes and edges ...
Ery Arias-Castro, Boris Efros, Ofer Levi
ANTS
2006
Springer
93views Algorithms» more  ANTS 2006»
13 years 10 months ago
Testing Equivalence of Ternary Cubics
Let C be a smooth plane cubic curve with Jacobian E. We give a formula for the action of the 3-torsion of E on C, and explain how it is useful in studying the 3-Selmer group of an ...
Tom Fisher
SIGGRAPH
1987
ACM
13 years 10 months ago
Direct least-squares fitting of algebraic surfaces
In the course of developing a system for fitting smooth curves to camera input we have developed several direct (i.e. noniterative) methods for fitting a shape (line, circle, conic...
Vaughan R. Pratt