photonmapping – Visual Computing Lab

Path Tracing and Stochastic Progressive Photon Mapping

Peter Trier Mikkelsen — Sun, 28 Oct 2012 20:11:02 +0000

Some pictures and videos from our own gpu-raytracer which is physically based and currently supports path tracing and stochastic progressive photon mapping with a variety of different materials.

The left statue is made of rough glass , the middle is an imitation of plastic/wax and the right statue is copper (using sopra nk-values).

Full spectral rendering using stochastic progressive photon mapping.

A comparison between pathtracing and sppm after two minutes of rendering. Click the image to see a video-capture of the rendering.

Stochastic Progressive Photon Mapping

Peter Trier Mikkelsen — Tue, 29 Mar 2011 10:33:48 +0000

Bunny rendered with area light, rendering time approx. 8 min.

After Toshiyas visit we finally got around to implement a cuda version of his great progressive photon mapping.

It needs a lot of photons to converge, but it is really cool for caustics!

Fun with Photonmapping

Peter Trier Mikkelsen — Sat, 09 May 2009 13:14:45 +0000

Photon mapping

Our first attempt to use photonmapping in our Cuda raytracer, 300 samples pr pixel, 1200×800, final image rendering time 65 secs.

Here is the famous sponza scene in a 400 pixel pr sample rendering, without and with photonmapping. At this moment this takes a few minutes

to render, but we hope to improve on the rendering time when we learn a little more about CUDA.