Conceptemission-absorption model
Emission-Absorption Model
The most fundamental physical model in volume rendering, describing the emission and absorption processes as light travels through a medium. The radiance ultimately reaching the camera is an integral along the ray, and the density field appears in both the emission and absorption terms.
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Oct 14
In the emission-absorption rendering model, the density field appears in both the emission term and the absorption term, and there is room for mutual compensation between these two effects, which is the physical root of the appearance compensation phenomenon.
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