B-Splines for Physically-Based Rendering

by Michael M. Stark, William Martin, Elaine Cohen, Tom Lyche, and Richard F. Riesenfeld

Isotropic and anisotropic BRDFs:

The Cornell Box:

Knot lines used:

Without discontinuity fix:

With discontinuity fix:

Mug, with 1, 2, 3, and 4 gathers:

Cup with caustic:

Table scene (aka "All the world's a spline" scene):

Closeup on the spheres:

Bill Martin (wmartin@cs.utah.edu)