FOCS
1991
IEEE
14 years 2 months ago
1991
IEEE
A polygon with two distinguished vertices, s and g, is called a street iff the two boundary chains from s to g are mutually weakly visible. For a mobile robot with on-board vision...
COMPGEOM
1991
ACM
14 years 2 months ago
1991
ACM
Given a simple polygon in the plane with two distinguished vertices, s and g, is it possible for two guards to simultaneously walk along the two boundary chains from s to g in suc...
COMPGEOM
1994
ACM
14 years 3 months ago
1994
ACM
We consider the problem of a robot which has to find a target in an unknown simple polygon, based only on what it has seen so far. A street is a polygon for which the two boundary...