Volumetric path tracing
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Volumetric path tracing is a method for rendering images in computer graphics which was first introduced by Lafortune and Willems[1]. This method enhances the rendering of the lighting in a scene by extending the path tracing method with the effect of light scattering. It is used for photorealistic effects of participating media like fire, explosions, smoke, clouds, fog or soft shadows.
As in the path tracing method a ray gets followed backwards, beginning from the eye on, until reaching the light source. In volumetric path tracing scatter events can occur while these process. When the light path hits the surfaces a special amount of it gets scattered in the media[2].
References
- ^ Lafortune, Eric P; Willems, Yves (June 1996). "Rendering participating media with bidirectional path tracing" (PDF). Proceedings of Rendering Techniques'96: 91–100.
- ^ Skånberg, Robin (January 2015). "Evaluation of Visual Parameters in Volumetric Path Tracing" (PDF). Department of Science and Technology, Linköping University: 20-22.
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