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Luminance threshold
| Глоссарий по вычислительной технике |
Порог яркости
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Luminance, английский
- Brightness. in cctv refers to the part of the video signal that contains information about the scene brightness.
- Яркость. составляющая изображения, определяющая его относительную яркость в каждой точке экрана монитора
- This refers to the part of a video signal that carries the monochrome information. i.e. brightness information.
- Luminous intensity (photometric brightness) of any surface in a given direction per unit of projected area of the surface as viewed from that direction, measured in foot lamberts (fl).
- Luminous intensity (photometric brightness) of any surface in a given direction per unit of projected area of the surface as viewed from that direction, measured in footlamberts (fl).
- Refers to the video signal information about the scene brightness. the measurable,
- The part of a composite video signal that expresses brightness. also called y. separately transmitted in y/c (s-video).
- 1. luminous flux emitted, rejected, or transmitted per unit of solid angle per projected area of the source. 2. the photometric equivalent of brightness. 3. the brightness part of a television picture.
- Refers to the video signal information about the scene brightness. the measurable, luminous intensity of a video signal. differentiated from brightness in that the latter is nonmeasurable 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.
- The luminous intensity of any surface in a given direction per unit of projected area of the surface, as viewed from that direction; a directional property of luminous radiation.
- The perceived brightness component of a given color, as opposed to its hue or its saturation.
- Яркость. относится к содержащейся в видеосигнале информации об освещенности объекта. фотометрическая единица измерения светового излучения.
- Ratio of a surface’s luminous intensity in a given direction to a unit of projected area. measured in candela per square meter.
- Photometric brightness of a light source defined by the density of its luminous intensity, measured as luminous flux per unit solid angle per unit area in a given direction. reported in candela per square meter (cd·m–2).
- Photometric brightness of a light source defined by the density of its luminous intensity, measured as luminous flux per unit solid angle per unit area in a given direction. reported in candela per square meter (cd/m2). compare illuminance. 504 glossary l-m luminous efficacy; luminous efficiency: ratio of the total luminous flux of a light source to the total radiant flux or to the power input.
- Photometric brightness of a light source as defined by the density of its luminous intensity. luminance is a measure of the luminous flux per unit solid angle per unit area in a given direction and is reported in candela per square meter (cd·m–2).
Luminance (or brightness), английский
A measure of flux reflected or emitted from a surface. it has
Luminance contrast, английский
The relationship between the luminance of an object and the luminance of the immediate background.
Luminance decay, английский
- Ослабление яркости. постепенное снижение относительной яркости экрана монитора с течением времени
- Ослабление яркости
Luminance factor, английский
- The ratio of the luminance of a surface or medium under specified conditions of incidence, observation, and light source to the luminance of a lossless, perfectly diffusing surface or medium under the same conditions. luminance meter, brightness meter a visual instrument or a photoelectric instrument used to measure luminance.
- Коэффициент яркости
Luminance of a surface, английский
Luminance ratio, английский
Luminance signal, английский
- That portion of the ntsc color television signal which contains the luminance or brightness information.
- That portion of the television signal which conveys the luminance or brightness information.
Luminance temperature, английский
Яркостная температура
Luminance variance, английский
Неравномерность яркости
Luminance., английский
Threshold, английский
- Seuil
- The smallest input value to a sensor which will cause the sensor to respond. commonly used with mechanical wind sensors to describe the wind speed necessary to cause the anemometer and wind vane to turn.
- The bottom metal or wood plate of an exterior door frame. generally they are adjustable to keep a tight fit with the door slab.
- Порог, точка, в которой процесс начинается или изменяется. пороговые установки при сканировании черно-белых изображений определяют, какие пикселы должны быть сконвертированы в черные, а какие с в белые. в нерезком маскировании порог определяет, каким долж
- Порог; пороговое значении
- Порог; входная кромка впп
- A defined pass or fail value, i.e., the maximum or minimum value of insertion loss in db or dbm
- The input level at which lasing begins during excitation of the laser medium.
- Лимит, предел
- 1. the point at which something starts, e.g. where something can be perceived by the body or where a drug starts to have an effect she has a low hearing threshold. 2. the point at which a sensation is strong enough to be sensed by the sensory nerves ‘…if intracranial pressure rises above the treatment threshold, it is imperative first to validate the reading and then to eliminate any factors exacerbating the rise in pressure’ [british journal of hospital medicine]
- Порог; пороговая величина; предел
- The beginning of the part of the runway usable for landing
- Порог. характерный признак, значимая величина, уровень или предел, при которых начинает происходить или возникать некое событие. см. cut-off concentration (критическая концентрация).
- Порог. см. nuisance threshold; odour threshold — порог вредного (нежелательного) воздействия; порог ощущения запаха. •...¦`" --¦:.
- In a compressor or limiter, the input level above which compression or limiting takes place. therefore the level of the audio must be above the threshold setting, or no effect is heard. in an expander or gate, the input level below which expansion or gating occurs.
- A filter effect in windows movie maker.
- A limit against which other values can be compared. when a value crosses this limit, it can trigger an alert or other action.
- Порог. характерный признак, значимая величина, уровень или предел, при которых начинает происходить или возникать некое событие. см. cutoff concentration (критическая концентрация).
- Порог
- Since color in the scanned images of colored documents is rarely even, a threshold value is often needed when defining colors for individual fields. the threshold value determines the size of the range of colors that entrance will accept in relation to the reference color. on a scale of 0-100, a value of zero will only accept exact matches of the reference color, whereas with a value of 100, will include a much broader range of colors. the default value is 50 and is sufficient in most situations.
- In reference to currents or magnetic fields, the minimum strength necessary to create a lookedfor effect is called the threshold value. for example, the minimum current necessary to produce a readable indication at a given defect, is the threshold value of current for that purpose.
- A value in a phenomenon where a large change of output occurs.
- Setting of an instrument that causes it to register only those changes in response greater or less than a specified magnitude.4 see adaptive thresholding, resolution threshold.
- Voltage level setting of an instrument that causes it to register only signals greater or less than a specified magnitude.10,20 this threshold may be adjustable, fixed or floating.16 through-transmission technique: test technique in which ultrasonic energy is transmitted through the test object and received by a second transducer on the opposite side. changes in received signal amplitude are taken as indications of variations in material continuity.7
Threshold, английский
Threshold, английский
Threshold, английский
Threshold (of) sensitivity, английский
Threshold (пороговое значение), английский
Граничное значение, связанное с каким-либо параметром или атрибутом устройства или системы. достижение порогового значения служит переключателем (триггером) того или иного состояния, сигнала или события. например, при достижении порогового значения может быть передано сообщение администратору сети.
Threshold audiogram, английский
Threshold concentration, английский
Пороговая концентрация (максимальная допустимая концентрация определенного вещества в воде)
Threshold concentration in water by general sanitary criterion, английский
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Generative grammar, английский
Порождающая грамматика
Huminance threshold, английский
Порог яркости
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