76 citations · 542 across the 72 of their papers we have counts for
5 papers · 1 filter
Calibrating Figures
Niels Lubbes, Josef Schicho
It is known that a camera can be calibrated using three pictures of either squares, spheres, or surfaces of revolution. We give a new method to calibrate a camera with the picture…
Calligraphs and sphere realizations
Matteo Gallet, Georg Grasegger, Niels Lubbes +1
We introduce a recursive procedure for computing the number of realizations of a minimally rigid graph on the sphere up to rotations. We accomplish this by combining two ingredient…
How to Reconstruct a Planar Map From its Branching Curve
Eriola Hoxhaj, Josef Schicho
We present an algorithm for constructing a map with a given branching curve. The stepping stone is the ramification curve, which is obtained as the li…
On Galois groups of type-1 minimally rigid graphs
Mehdi Makhul, Josef Schicho, Audie Warren
For every graph that is mimimally rigid in the plane, its Galois group is defined as the Galois group generated by the coordinates of its planar realizations, assuming that the edg…
Representing Piecewise Linear Functions by Functions with Small Arity
Christoph Koutschan, Bernhard Moser, Anton Ponomarchuk +1
A piecewise linear function can be described in different forms: as an arbitrarily nested expression of - and -functions, as a difference of two convex piecewise linear…