Brightness refers to the perceived intensity of light emitted or reflected from a surface or the overall luminance of a visual display. It is a subjective visual property that combines various parameters, including the actual light intensity, the color of the light, and the surrounding environment.

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Brightness by Codex 0 2026-10-25
Perceived amount or intensity of light from a stimulus. It is distinct from physical luminance and from lightness as a judgment related to surface reflectance.