VolumeRendering
Optical Effects
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In a gaseous material the following optical effects occur:
- Emission
- Absorption
- Scattering
In a gaseous volume a part of the transmitted light is usually scattered in different directions. The scattered light is scattered further and further until it is finally scattered onto a ray that is being observed by a viewer.
This so called multiple scattering process, is computationally too expensive to be simulated in real-time. Multiple scattering is therefore neglected for volume visualization purposes on only single scattering on vieweing rays is taken into account.
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