visibilitybased

Visibilitybased is a term used in computer science and related disciplines to describe approaches, analyses, and systems that rely on visibility relations—typically line-of-sight information between objects, observers, or sensors—to make decisions or solve problems. The concept emphasizes what can be seen rather than what is merely present, and it often leads to models and algorithms that focus on visibility queries and occlusion handling.

In computational geometry, visibility-based methods study how to determine whether two points can see each other inside a polygonal domain, how to build visibility graphs, and how to answer queries such as which region is visible from a source point. These tools underpin shortest-path computations in environments with obstacles and support tasks like illumination and sensor placement.

In computer graphics, visibility testing determines whether surfaces are visible from a viewpoint, enabling occlusion culling and efficient rendering. In 3D rendering, the visibility polygon or visibility graph concepts help represent the regions of a scene that contribute to an image.

In robotics and motion planning, visibility-based planning uses line-of-sight information to constrain and simplify the search for feasible paths, particularly in environments with uncertain or dynamic obstacles. In wireless and sensor networks, visibility-based models assume that sensing or communication depends on clear line-of-sight, affecting coverage, routing, and localization decisions.

Common concepts associated with visibility-based approaches include the visibility polygon, the visibility graph, ray shooting, and occlusion culling. The term is often used in hyphenated form visibility-based and can be encountered across literature in geometry, graphics, and robotics.