Introduction - If you have any usage issues, please Google them yourself
The art gallery problem or museum problem is a well-studied visibility problem in computational geometry. The motivation for the problem is the real-world problem of guarding an art gallery with the minimum number of security cameras that can each rotate to obtain a full field of vision. In the computational geometry version of the problem the layout of the art gallery is represented by a simple polygon and each security camera is represented by a point in the polygon. A set S of points is said to guard a polygon if, for every point p in the polygon, there is some q\in Ssuch that the line segment between p and q does not leave the polygon.