Up: | A Fast and Accurate Light Reflection Model | |
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There have been many efforts in Computer Graphics to develop physically-based light reflection models [BLIN77, COOK82, HE91, KAJI85, PHON75].
Reflection models are generally presented in terms of a bidirectional reflectance distribution function (BRDF)
where dI_{r} is the reflected radiance or intensity, measured in watts per meter-squared per steradian, and dE_{i} is the incident energy flux, measured in watts per meter-squared. In general, the BRDF is a function of many parameters which can be divided into two groups, i.e., geometrical parameters and physical parameters.
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