luminance

Englisch - Türkisch

Definition von luminance im Englisch Türkisch wörterbuch: parlaklık; parıldama; (Nükleer Bilimler) aydınlık; parıldama,parlaklık
luminance channel: parlaklık kanalı
luminance information: parlaklık bilgisi
luminance signal: parlaklık sinyali
luminance temperature: parlaklık sıcaklığı
screen luminance: ekran parlaklığı
equivalent luminance: (Aydınlatma) eşdeğer ışıklılık
peak luminance: doruk isiklilik

Englisch - Englisch

Definition von luminance im Englisch Englisch wörterbuch: the luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction, i.e. luminous intensity divided by unit area; measured in stilbs or apostilbs; the quality of being luminous; The degree of lightness or darkness in colors created by mixing lights The equivalent value in colors created by mixing pigments; The intensity of light in a color; a measure of light power refected or emitted from an object within a solid angle of one steradian per unit area area projected in a given direction The SI unit is the candela per square meter, which is sometimes called a nit See Brightness, Luminance, and Confusion from Information Display, March 1993 by Charles P Halsted at http: //www resuba com/wa3dsp/light/lumin html; {i} brightness, luminosity; Perceived brightness, or grayscale level, of a color Luminance and chromaticity together fully define a perceived color; The light reflected or produced by a given area of a subject in a specific direction Measurable by a reflected-light (luminance) meter luminance meter See reflected-light meter; refers to the brightness information of the overall video signal Also see chrominance, component video, and S-video; The brightness information of a television picture It is also used to refer to the brightness component (Y signal) of a PAL, SECAM or NTSC television signal; Amplitude (strength) of the gray scale or black-and-white portion of the video signal; Although brightness is often used interchangably with luminance, we prefer to use the term "lightness " This concept deals with many of the same variables as value but using a different mathematical equation Check out our own definition of LUMINANCE/LIGHTNESS or more simply, think about the Color Wheel as colors having equal luminance Adding white will increase lightness and adding black will decrease it; The measure of the subject's "brightness" This is usually in terms of candles-per-square-foot; This term is used to describe the specific light which comes off the surface whether off a filament, light bulb, lens, louver, tabletop, etc Luminance varies with both the direction at which you view the surface and its gloss characteristics Luminance is measured in candela per square foot; Lightness The highest of the individual RGB values plus the lowest of the individual RGB values, divided by two; a component of a Hue-Saturation-Lightness image; the quotient of the luminous flux at an element of the surface surrounding the oint, and propagated in directions defined by an elementary cone containing the given direction, by the product of the solid angle of the cone and the area of the orthogonal projection of the element of the surface on a plane perpendicular to the given direction The luminous flux may be leaving, passing through, and/or arriving at the surface Formerly, photometric brightness; Luminance is a measure of luminous flux density per unit solid angle Luminance is typically expressed in candela per square meter (lumens per square meter per steradian), apostilbs (1/pi lumens per square meter per steradian) or foot-lamberts (1/pi lumens per square foot per steradian); (1) (n ) The generic flux from a light-emitting or light-reflecting surface The subjective response to luminance is brightness (2) (n ) The specific ratio of color primaries that provides a match for the white point in a specified color space (3) (n ) The portion of a composite signal that carries brightness information See also chrominance; Density of luminous flux leaving a surface in a particular direction It is the quotient of the intensity of the source in the direction of measurement by the projected area of the source in that direction; The measure of the brightness of a color luminance corresponds to the total amount of light coming from a given surface area Luminance, also called lightness or intensity, is used along with hue and saturation, in the HLS color model; the brightness or the intensity of the colour; The quantitative attribute of light that correlates with the sensation of brightness and is the evaluation of radiance by means of the standard luminosity function; A measure of the intrinsic luminous intensity emitted by a source in a given direction Luminance is a measure only of light The comparable term for electromagnetic radiation in general is radiance; the quality of being luminous; emitting or reflecting light; "its luminosity is measured relative to that of our sun"; Radiant power weighted by a spectral sensitivity function that is characteristic of vision Luminance was created to describe scientifically why we experience different sensations towards objects with different brightnesses Luminance is similar to intensity in that it is proportional to the physical power of the light source For example: When we watch television, the sun appears to be brighter than a building or tree It appears to be emitting more light so it has a greater luminance But in reality, each pixel in the screen is emitting the same amount of energy, thus everything on the screen has equal intensity; The visible light passing through a point in a certain direction, expressed in SI units of lumens per steradian (candelas) per square meter, or nits (Compare to radiance ); The luminous intensity of a surface in a given direction per unit area of that surface as viewed from that direction; often incorrectly referred to as "brightness "; Component of video data that includes technical "information" about its brightness; Commonly called illumination; the luminous or visible flux per unit area on a receiving surface at any given point
luminance unit: a measure of luminance