A Dragon's Tale
by Frederik Leonhardt & Michael Frey
In our scene we used the so called Stanford Dragon, a model made of 871,414 triangles, shaded with a procedural marble bump shader, sitting on a wooden pedestal.
To be able to show the effects of our photon map, we did choose an indoor scene with some refractive objects. So we used a red and green Cornell Box. In the front of our scene we have a pool of water textured by a procedural refractive bump shader. The glass sphere on the left and the diamond have a different refraction index and show the caustics from the photon map.
One of the spheres shows a planet surface generated via procedural shading. The focus of the camera (depth of field) is at the same distance as the planet sphere. The floor is made out of light gray procedural marble.
The scene has a total of 888,752 triangles.
Our final image, you can download it in fullscreen here: A Dragon's Tale
The total rendering time was 6 hours and 8 minutes on a Intel Core i3-2310M CPU @ 2.10GHz with 4x Halton sampling and additonally 16 random camera rays per pixel to achieve the depth of field effect. The scene contains 3 light sources. We used 25 million photons distributed over those light sources, and about 4.4 million of them were stored in the photon map (~3.4 million "direct" photons and ~1 million "caustic" photons).
We used three freely available models, the Stanford Dragon, an ashtray (dont ask why!) and a Pumpkin.
The rest of the scene was modeled with Blender.
s9fkleon@stud.uni-saarland.de
s9mlfrey@stud.uni-saarland.de
