Published Online: 16 MAR 2009
Copyright © 2007 by John Wiley & Sons, Inc.
Wiley Encyclopedia of Computer Science and Engineering
How to Cite
Reinhard, E., Khan, E. and Akyüz, A. O. 2009. Rendering. Wiley Encyclopedia of Computer Science and Engineering. 2412–2418.
- Published Online: 16 MAR 2009
In the real world, light sources emit photons that normally travel in straight lines until they interact with a surface or volume. When a photon encounters a surface, it may either be absorbed, reflected, or transmitted. Some of these photons may hit the retina of an observer where they are converted into a signal that is then processed by the brain, thus forming an image. Similarly, photons may be caught by the sensor of a camera. In either case, the image is a 2-D representation of the environment.
The formation of an image as a result of photons interacting with a 3-D environment may be simulated on the computer. The environment is then replaced by a 3-D geometric model and the interaction of light with this model is simulated with one of a large number of algorithms. This simulation of light behavior is called rendering.
- ray tracing;
- ray casting;
- Monte Carlo sampling;
- photon mapping;
- image-based rendering