Assignment 4 Discussion

Don't hesitate to ask questions.

Q1: The first question says "L(phi, theta) = cos(theta) when theta > PI/2 and L(phi, theta) = 0 otherwise." Shouldn't this be for theta < PI/2, so that it's cosine-weighted hemisphere sampling, which is more appropriate here? If theta > PI / 2, the arrangement doesn't make much sense - the luminance would be negative! Shouldn't we also be weighting by the cos(theta) term in the radiance function (or is this already implied)?

Assignment4Discussion (last edited 2006-05-17 01:15:30 by KayvonFatahalian)