What is V(p, p')?
@pavelkang: It's the visibility term: 1 if $p$ and $p^\prime$ are mutually visible (no object blocking the path between them); 0 otherwise.
What is V(p, p')?
@pavelkang: It's the visibility term: 1 if $p$ and $p^\prime$ are mutually visible (no object blocking the path between them); 0 otherwise.