04/11/2002
15-462 Graphics I
14
Radiosity Algorithms Summary
•Matrix
radiosity algorithm
–Pre-compute
all form factors
–Iterative
solution (Gauss-Seidel)
•Start
with emission
•Each
objects gathers light from all other objects
•Progressive
refinement
–Pick
brightest patch
–Compute
outgoing form factors
–Shoot
light from this patch to all other patches
–Repeat
for next brightest batch
•Combine
substructuring and progressive refnt.