- Luminance
- A&VThe measurable, luminous intensity of a video signal. Differentiated from brightness in that the latter is nonrneasurable and sensory. The color video picture information contains two components: luminance (brightness and contrast) and chrominance (hue and saturation). The photometric quantity of light radiation.————————PPA measure of the brightness or intensity of each pixel in an image.
Audio and video glossary. 2014.
См. также в других словарях:
Luminance — is a photometric measure of the density of luminous intensity in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is… … Wikipedia
luminance — [ lyminɑ̃s ] n. f. • 1948; du rad. de lumineux ♦ Phys. Quotient de l intensité lumineuse d une surface par l aire apparente de cette surface pour un observateur lointain (exprimé en candela par mètre carré). ⇒ brillance. ● luminance nom féminin… … Encyclopédie Universelle
luminance — luminousness, 1862, from L. luminantem (nom. luminans), prp. of luminare (see LUMINARY (Cf. luminary)) … Etymology dictionary
luminance — [lo͞o′mə nəns] n. [< L lumen (gen. luminis), LIGHT1 + ANCE] 1. the quality or state of being luminous 2. a measure of the brightness of a luminous surface, measured in candelas per unit area … English World dictionary
Luminance — En physique, la luminance est l intensité d une source étendue dans une direction donnée, divisée par l aire apparente de cette source dans cette même direction. Ne pas confondre la luminance tout court, qui est une grandeur photométrique… … Wikipédia en Français
luminance — skaistis statusas T sritis Standartizacija ir metrologija apibrėžtis Paviršiaus elemento šviesos pasirinktąja kryptimi stipris, padalytas iš statmenosios to elemento projekcijos į statmeną pasirinktajai krypčiai plokštumą ploto. Matavimo vienetas … Penkiakalbis aiškinamasis metrologijos terminų žodynas
luminance — skaistis statusas T sritis fizika atitikmenys: angl. brightness; luminance; luminosity vok. Helligkeit, f; Leuchtdichte, f rus. яркость, f pranc. brillance, f; luminance, f … Fizikos terminų žodynas
luminance — /looh meuh neuhns/, n. 1. the state or quality of being luminous. 2. Also called luminosity. the quality or condition of radiating or reflecting light: the blinding luminance of the sun. 3. Optics. the quantitative measure of brightness of a… … Universalium
luminance — lu•mi•nance [[t]ˈlu mə nəns[/t]] n. 1) the state or quality of being luminous 2) the quality or condition of radiating or reflecting light: the blinding luminance of the sun[/ex] 3) opt the quantitative measure of brightness of a light source or… … From formal English to slang
luminance — skaistis statusas T sritis chemija apibrėžtis Šviečiančio ar šviesą sklaidančio paviršiaus šviesos ryškumas tam tikra kryptimi (Cd/m²). atitikmenys: angl. brightness; luminance; luminosity rus. яркость … Chemijos terminų aiškinamasis žodynas
