luminanssikenttää

Luminanssikenttä refers to the perceived brightness distribution of a surface or scene as seen by an observer. It is a concept that describes how bright different points in a visual field appear. Unlike luminance, which is a physical quantity measuring the luminous intensity per unit area in a given direction, luminanssikenttä is a subjective and qualitative perception. It takes into account factors like the adaptation of the eye, contrast effects, and the observer's individual visual characteristics. Essentially, it's how our eyes and brain interpret the physical luminance values to create a sense of varying brightness across a visual space. A scene with high contrast will have a luminanssikenttä with distinct regions of perceived brightness and darkness, even if the absolute luminance values are within a limited range. Understanding luminanssikenttä is important in fields like visual perception research, display technology, and image processing, as it helps to predict and evaluate how visual information will be perceived by humans. It highlights the difference between objective physical measurements and subjective visual experience.