= Final Project Proposal: Tom Brow, Ranjitha Kumar =
== Goal ==

== Techniques == 

=== Subsurface Scattering ===

=== Volume Rendering ===
The target image is an underwater scene, and scattering of both direct and reflected light in the water is evident.  Since PBRT's volume integrator only integrates over direct light, we will need to add support for volume scattering of reflected light, and maybe multiple volume scattering.  We can do both using photon mapping, which we will implement according to [http://graphics.ucsd.edu/~henrik/papers/sig98.html Efficient Simulation of Light Transport in Scenes with Participating Media using Photon Maps] (Jensen and Christensen, 1998).  This technique also allows