Largest similar copies of convex polygons amidst polygonal obstacles

12/13/2020
by   Taekang Eom, et al.
0

Given a convex polygon P with k vertices and a polygonal domain Q consisting of polygonal obstacles with total size n in the plane, we study the optimization problem of finding a largest similar copy of P that can be placed in Q without intersecting the obstacles. We improve the time complexity for solving the problem to O(k^2n^2λ_4(k)logn). This is progress of improving the previously best known results by Chew and Kedem [SoCG89, CGTA93] and Sharir and Toledo [SoCG91, CGTA94] on the problem in more than 25 years.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
05/27/2019

The Largest Quadrilateral in a Convex Polygon

We present a simple linear-time algorithm for finding the quadrilateral ...
research
11/03/2021

Polygon Placement Revisited: (Degree of Freedom + 1)-SUM Hardness and an Improvement via Offline Dynamic Rectangle Union

We revisit the classical problem of determining the largest copy of a si...
research
12/05/2019

Almost-monochromatic sets and the chromatic number of the plane

In a colouring of R^d a pair (S,s_0) with S⊆R^d and with s_0∈ S is almos...
research
07/24/2020

Largest triangles in a polygon

We study the problem of finding maximum-area triangles that can be inscr...
research
07/24/2017

Domain Recursion for Lifted Inference with Existential Quantifiers

In recent work, we proved that the domain recursion inference rule makes...
research
11/16/2018

Information Complexity of Treasure Hunt in Geometric Terrains

Treasure hunt is the task of finding an inert target by a mobile agent i...
research
11/04/2019

Local on-surface radiation condition for multiple scattering of waves from convex obstacles

We propose a novel on-surface radiation condition to approximate the out...

Please sign up or login with your details

Forgot password? Click here to reset