Envelope computation in the plane by approximate implicitization |
| |
Authors: | Tino Schulz Bert J��ttler |
| |
Affiliation: | (1) Institute of Applied Geometry, Johannes Kepler University, Altenbergerstr. 69, 4040 Linz, Austria;(2) University of Lille, Lille, France |
| |
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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|