Title
Envelope computation in the plane by approximate implicitization
Abstract
Given a rational family of planar rational curves in a certain region of interest, we are interested in computing an implicit representation of the envelope. The points of the envelope correspond to the zero set of a function (which represents the envelope condition) in the parameter space combining the curve parameter and the motion parameter. We analyze the connection of this function to the implicit equation of the envelope. This connection enables us to use approximate implicitization for computing the (exact or approximate) implicit representation of the envelope. Based on these results, we formulate an algorithm for computing a piecewise algebraic approximation of low degree and illustrate its performance by several examples.
Year
DOI
Venue
2011
10.1007/s00200-011-0149-1
Appl. Algebra Eng. Commun. Comput.
Keywords
Field
DocType
Approximate implicitization,Envelope,Algebraic curve,65D17,14Q20,41A15
Discrete mathematics,Algebraic number,Algebraic curve,Implicit function,Zero set,Planar,Parameter space,Mathematics,Piecewise,Computation
Journal
Volume
Issue
ISSN
22
4
0938-1279
Citations 
PageRank 
References 
5
0.77
12
Authors
2
Name
Order
Citations
PageRank
Tino Schulz1322.96
Bert Jüttler2114896.12