Cornell University Program of Computer Graphics
Volume Reconstruction FiltersThis collage of four images was generated by Steve R. Marschner and Richard J. Lobb for the 1994 paper An Evaluation of Reconstruction filters for Volume Rendering. The image depicts an analytic function in comparison to three methods of reconstructing the function from a sampling set.
Discontinuity MeshingDani Lischinski, Filippo Tampieri and Donald P. Greenberg created this image for the 1992 paper Discontinuity Meshing for Accurate Radiosity. It depicts a scene that represents a pathological case for traditional radiosity images, many small shadow casting details. Notice, in particular, the shadows cast by the windows, and the slats in the chair.
Opera LightingThis scene from La Boheme demonstrates the use of focused lighting and angular projection of predistorted images for the background. It was rendered by Julie O'B. Dorsey, Francois X. Sillion, and Donald P. Greenberg for the 1991 paper Design and Simulation of Opera Lighting and Projection Effects.
Radiosity FactoryThese two images were rendered by Michael F. Cohen, Shenchang Eric Chen, John R. Wallace and Donald P. Greenberg for the 1988 paper A Progressive Refinement Approach to Fast Radiosity Image Generation. The factory model contains 30,000 patches, and was the most complex radiosity solution computed at that time. The radiosity solution took approximately 5 hours for 2,000 shots, and the image generation required 190 hours; each on a VAX8700.
MuseumMost of the illumination that comes into this simulated museum arrives via the baffles on the ceiling. As the progressive radiosity solution executed, users could witness each of the baffles being illuminated from above, and then reflecting some of this light to the bottom of an adjacent baffle. A portion of this reflected light was eventually bounced down into the room. The image appeared on the proceedings cover of SIGGRAPH 1988.
Two Pass RenderingThe environment depicted here was inspired by the painting Lady and Gentleman at the Virginals, by the 17th century Dutch painter, Jan Vermeer. A modified radiosity solution was ray traced to produce the specular highlights on the floor. The image is from the 1987 paper A Two Pass Solution to the Rendering Equation: a Synthesis of Ray Tracing and Radiosity Methods. by John R. Wallace, Michael F. Cohen and Donald P. Greenberg. The image appeared on the cover of Computer Graphics: Principles and Practice by Foley, van Dam, Feiner and Hughes.
Another collection of realistic images is also available online.