Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light...

Relative luminance Y {\displaystyle Y} follows the photometric definition of luminance L {\displaystyle L} including spectral weighting for human vision...

in video engineering and relative luminance as used in color science (i.e. as defined by CIE). Relative luminance is formed as a weighted sum of linear...

Look up luminance in Wiktionary, the free dictionary. Luminance is a photometric measure of the density of luminous intensity in a given direction, measured...

calculated from gamma-corrected RGB input and that it is different from true luminance. Today, the term YUV is commonly used in the computer industry to describe...

Luminance HDR, formerly Qtpfsgui, is graphics software used for the creation and manipulation of high-dynamic-range images. Released under the terms of...

same luminance (technically relative luminance) as the original color image (according to its colorspace). In addition to the same (relative) luminance, this...

brightness and color accuracy. The "luminance contrast" is the ratio between the higher luminance, LH, and the lower luminance, LL, that define the feature to...

Lightness is a visual perception of the luminance ( L ) {\displaystyle (L)} of an object. It is often judged relative to a similarly lit object. In colorimetry...

logarithmically, it is helpful to have an appreciation of both illuminance and luminance by orders of magnitude. To help compare different orders of magnitude...

brightness is the perception elicited by the luminance of a visual target. The perception is not linear to luminance, and relies on the context of the viewing...

difference in luminance or color that makes an object (or its representation in an image or display) visible against a background of different luminance or color...

the human visual system's lower acuity for color differences than for luminance. It is used in many video and still image encoding schemes – both analog...

same chromaticity as the white point, yet with a luminance equal to 0.34731% of the white point luminance. The ambient illumination level at the monitor...

Microsystems through a DB13W3 connector. Sync-on-luminance Similar to sync-on-green, but combines sync with the luminance signal (Y) of a color system such as YPbPr...

combinations that yield the same exposure have the same EV (for any fixed scene luminance). Exposure value is also used to indicate an interval on the photographic...

ground pairs, termed Y and C. Y is the luma signal, which carries the luminance – or black-and-white – of the picture, including synchronization pulses...

complex procedure which evaluates the viewing cone from measurements of luminance and chromaticity versus direction of observation. ISO 13406-2 introduces...

correction or gamma is a nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems. Gamma correction...

this leads to confusion with other uses of the word, such as to mean luminance. "Brightness" should never be used for quantitative description, but only...

with a luminance ratio of 1:60 (　 : 　), the geometric mean had to be used to find the middle gray. That is equivalent to a relative luminance of 12.9%...

The candela per square metre (symbol: cd/m2) is the unit of luminance in the International System of Units (SI). The unit is based on the candela, the...

relationship of recommended photographic exposure to a scene's average luminance is given by the camera exposure equation A 2 T = B S x K {\displaystyle...

an objective specification of the quality of a color regardless of its luminance. Chromaticity consists of two independent parameters, often specified...

color's luminance. This brightness increase by saturation, which grows stronger as saturation increases, might better be called chromatic luminance, since...

Inverse tone mapping is the inverse technique that allows to expand the luminance range, mapping a low dynamic range image into a higher dynamic range image...

square meter (cd/m2). Often the term luminance is used for the relative luminance, Y/Yn, where Yn is the luminance of the reference white point. Luma (Y′)...

subject of uniform luminance and one that consists of light and dark elements. When exposure is determined from average luminance measurements, the exposure...

illuminance. It is meant as a method for correcting photometric measurements of luminance values impinging on the human eye by scaling them by the effective pupil...

Photopic vision is the vision of the eye under well-lit conditions (luminance levels from 10 to 108 cd/m2). In humans and many other animals, photopic...