brightsnessbrightness

Brighnessbrightness is a coined concept used in some discussions of digital imaging and display science to denote a blended measure that attempts to capture both the objective brightness emitted or reflected by a source and the subjective brightness perceived by an observer. The term is not standard in physics or established in professional color science, but it appears in blogs, forums, and experimental notes as a heuristic for comparing scenes, images, or displays where context strongly influences perception.

The name combines elements of brightness and perceived brightness, signaling that perceptual response is as important as physical luminance in certain applications. In this framework, brightsnessbrightness is treated as a scalar index that increases with higher display luminance, higher ambient illumination, and more favorable viewing geometry, while accounting for adaptation and glare.

Measurement and calculation are inherently model-based. A practical approach might express brightsnessbrightness as BB = w1*L + w2*P, where L is a physical luminance value (in cd/m^2) and P is a perceptual factor derived from a model of human vision (for example, a simplified version of CIECAM02 or a gamma-corrected brightness term). The weights w1 and w2 reflect viewing conditions and the desired emphasis on objective vs. perceptual aspects.

Applications are primarily in research, product development, and hobbyist comparisons of displays, photography, and virtual reality. Because there is no formal standard, brightsnessbrightness remains a flexible, context-dependent concept rather than a universal measurement.

Limitations: subjectivity, device variability, and lack of standardization.