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diffuse reflection

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ambient light

Overview page. Subjects: Computing — Arts and Humanities.

In photography and 3D graphics, indirect light that does not emanate from a discernible source but is reflected and refracted by surfaces and diffused in the atmosphere.

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He model

Overview page. Subjects: Computing.

An illumination model that includes directional diffuse and ideal specular terms to account for surface reflection plus an ideal diffuse component to accommodate subsurface scattering (see...

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Lambertian reflector

Overview page. Subjects: Earth Sciences and Geography.

A perfectly diffuse reflector which reflects electro-magnetic radiation equally in all directions.

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Lambert's law

Overview page. Subjects: Physics — Computing.

The law stating that diffusely reflected and transmitted light is scattered in all radiated directions with equal intensity and that this intensity is proportional to three values: the...

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radar cross-section

Overview page. Subjects: Warfare and Defence — Earth Sciences and Geography.

In radar terminology, the hypothetical area of a perfect diffuse reflecting surface which would be required to return the same amount of energy to a radar antenna as is observed from a...

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radiosity

Overview page. Subjects: Computing.

A method used in computer graphics for producing photorealistic images but originating from thermal engineers in the 1950s. The scene is divided into many small objects and accurate...

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Rayleigh criterion

Overview page. Subjects: Astronomy and Astrophysics.

The limiting resolution of a telescope set by diffraction; also known as the Rayleigh limit. The image of a star in a telescope consists of the Airy disk surrounded by diffraction rings....

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specular reflection

Overview page. Subjects: Computing.

Reflection of light or a radar beam, as from a mirror or a plane faceted surface such as an angular boulder. See backscatter; compare diffuse reflection.

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subsurface scattering

Overview page. Subjects: Computing.

Diffuse reflection caused by light entering a material, being absorbed, scattered, and eventually exiting the material.

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