4 papers
Symmetries of discrete curves and point clouds via trigonometric interpolation
Michal Bizzarri, Miroslav Lávička, Jan Vršek
We formulate a simple algorithm for computing global exact symmetries of closed discrete curves in plane. The method is based on a suitable trigonometric interpolation of vertices…
Reconstruction of surfaces with ordinary singularities from their silhouettes
Matteo Gallet, Niels Lubbes, Josef Schicho +1
We present algorithms for reconstructing, up to unavoidable projective automorphisms, surfaces with ordinary singularities in three dimensional space starting from their silhouette…
Computing projective equivalences of special algebraic varieties
Michal Bizzarri, Miroslav Lávička, Jan Vršek
This paper is devoted to the investigation of selected situations when the computation of projective (and other) equivalences of algebraic varieties can be efficiently solved with…
Symmetries and similarities of planar algebraic curves using harmonic polynomials
Juan Gerardo Alcázar, Miroslav Lávička, Jan Vršek
We present novel, deterministic, efficient algorithms to compute the symmetries of a planar algebraic curve, implicitly defined, and to check whether or not two given implicit plan…