Bi-hemispherical reflectance

Bi-hemispherical reflectance is the reflectance of a surface under diffuse illumination (with no direct component). ^[1]

5 relations: Bidirectional reflectance distribution function, Diffuse reflection, Directional-hemispherical reflectance, Reflectance, Sphere.

Bidirectional reflectance distribution function

The bidirectional reflectance distribution function (BRDF; f_(\omega_,\, \omega_)) is a function of four real variables that defines how light is reflected at an opaque surface.

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Diffuse reflection

Diffuse reflection is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle as in the case of specular reflection.

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Directional-hemispherical reflectance

Directional-hemispherical reflectance is the reflectance of a surface under direct illumination (with no diffuse component).

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Reflectance

Reflectance of the surface of a material is its effectiveness in reflecting radiant energy.

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Sphere

A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").

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References

[1] https://en.wikipedia.org/wiki/Bi-hemispherical_reflectance

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