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Brightness temperature
| Глоссарий по вычислительной технике |
Яркостная температура
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Brightness, английский
- Term for the intensity of illumination of a reproduced video picture.
- The attribute of visual perception in accordance with which an area appears to emit or reflect more or less light (this attribute of color is used in the color model hsb - hue, saturation, brightness). see lightness.
- A term to indicate the relative amount of light intensity available. brighter is more light, dimmer is less light. in an infrared system, the brightness control may affect actual image intensity or it may change the temperature range displayed. either eff
- The attribute of visual perception in accordance with which an area appear to emit more of less light. (luminance is the recommended name for the photo-electric quantity which has also been called brightness.)
- In ntsc and pal video signals, the brightness information at any particular instant in
- Яркость
- The value of a pixel in an electronic image, representing its lightness value from black to white. usually defined as brightness levels ranging in value from 0 (black) to 255 (white).
- In ntsc and pal video signals, the brightness information at any particular instant in a picture is conveyed by the corresponding instantaneous dc level of active video. control is an adjustment of setup (black level, black reference).
- Is strictly defined as an attribute of a visual sensation according to which an area appears to emit more or less light. we sometimes misuse the term brightness in this catalog instead of the more correct “luminance.” luminance, used for sources, is the luminous flux in an elemental beam from a given point per unit area per solid angle in the specified direction.
- The visual sensation of the luminous intensity of a light source. the brightness of a laser beam is most closely associated with the radiometric concept of radiance.
- A term mostly used in a qualitative way, related to the output power and beam quality of a laser; quantitatively
- The luminance of objects. the brightness of any area of the subject is dependent on how much light falls on it and how reflective it is. brightness range is the relationship we perceive between the light and dark subjects in a scene. brightness contrast is a judgment of the relative measure of that range, such as high, low, or normal. brightness values are sometimes referred to as ev (exposure values), a combination of aperture and shutter speed. brightness values in the scene are translated to tonal values on film.
- Value of a pixel in a digital image giving its value of lightness from black to white, with o being black and 255 being white.
- That attribute of visual perception in accordance with which a surface appears to emit more light or less light. now called luminance.
- The amount of light that is emitted by a computer monitor or picture displayed on the monitor.
- Яркость. для видеосигналов систем ntsc и pal
Brightness, английский
Brightness adjusting, английский
Корректировка яркости brightness-contrast-intensity filter фильтр "яркость-контрастность-интенсивность"
Brightness amplifier (rt), английский
Brightness control, английский
- Control, which increases or decreases the illumination of phosphors on a monitor screen to vary the brightness.
- Регулировка яркости
Brightness converters, английский
Optically pumped devices where the generated optical output has a higher brightness than the optical pump source
Brightness drop, английский
Brightness filter, английский
Фильтр яркости
Brightness meter, английский
A common expression for a luminance meter.
Brightness range, английский
Brightness range of object, английский
Brightness ratio, contrast ratio, английский
The all-too-often awful truth about a subject or scene that has inappropriate or excessive contrast. meter reading procedure: take two reflected-light readings: 1) the lightest significant area of the subject or scene and 2) the darkest. divide 1) by 2). each medium or method of reproduction has different brightness ratio limits. movie theaters can project a maximum of about 125:1 (7 stops plus); modern, well-adjusted video cameras 30 or, some pros suggest, 40:1. also see: lighting ratio and contrast.
Brightness reversion, английский
Brightness tool, английский
Инструмент "яркость" brightness-voltage characteristicхарактеристика "яркость-напряжение"
Brightness value unit, английский
Brightness, decrease, английский
A filter effect in windows movie maker.
Brightness, increase, английский
A filter effect in windows movie maker.
Brightness, luminance, английский
A measure of a surface`s or subject`s reflectivity in a given direction.
Brightness., английский
Temperature, английский
- Température
- Dry-bulb - temperature of air as indicated by a standard thermometer.
- An expression of thermal energy density. how hot or cold an object is.
- The measure of the intensity of heat that a substance possesses.
- Температура
- Температура тмр test methods and procedures методы проведения испытаний и последовательность их проведения тмр theodolite measuring point кинотеодолитная станция
- Temperatura, fiebre
- The condition attained when the wetted wick of a wet-bulb thermometer has reached a stable and constant temperature when exposed to moving air in excess of 900 ft (274.3 m) per minute.
- 1. the heat of the body or of the surrounding air, measured in degrees the doctor asked the nurse what the patient’s temperature was. his temperature was slightly above normal. the thermometer showed a temperature of 99°f. to take a patient’s temperature to insert a thermometer in someone’s body to see what his or her body temperature is they took his temperature every four hours. when her temperature was taken this morning, it was normal. 2. illness when your body is hotter than normal he’s in bed with a temperature. her mother says she’s got a temperature, and can’t come to work. comment: the average body temperature is about 37° celsius or 98° fahrenheit. this temperature may vary during the day, and can rise if a person has taken a hot bath or had a hot drink. if the environmental temperature is high, the body has to sweat to reduce the heat gained from the air around it. if the outside temperature is low, the body shivers, because rapid movement of the muscles generates heat. a fever will cause the body temperature to rise sharply, to 40°c (103°f) or more. hypothermia exists when the body temperature falls below about 35°c (95°f).
- Повышение температуры бетона ~ of truss высота фермы jet ~ высота подъёма горизонтальной неизотермической приточной струи, «всплывающей» над приточным отверстием
- Температура ~ of adiabatic saturation температура адиабатического насыщения
- Normal adult temperature varies among horses, but will usually range in degrees from 99.5°f to 100.5°f.
- A measure of the average kinetic energy of a material. the standard unit of temperature is a kelvin, (k). temperature determines the direction of heat flow between any two systems in thermal contact. heat will always flow from the area of higher temperature (t source) to one of lower temperature (t sink). temperature gradient (?t)
- A measure of the degree of molecular motion of a material compared to a reference point. temperature is measured in degrees farenheit (melting point of ice = 32 º f, boiling point of water = 212 º f) or degrees celsius (melting point of ice = 0 º c, boiling point of water = 100 º c).
- The degree of sensible heat of a body as measured by a thermometer or similar instrument.
- Measure of the intensity of particle motion in degrees celsius (°c) or degrees fahrenheit (°f) or, in the absolute scale, kelvin (k), where the increment of 1 k = 1 °c = 1.8 °f.
- Temperature of surrounding atmosphere. also called dry bulb temperature. compare standard atmospheric conditions. ampere (a): si unit of electric current. ampere per meter (a·m–1): si derived unit of magnetic field intensity. the measurement 1 a·m–1, for example, describes a current of 1 a flowing through a coil that is 1 m in diameter. compare oersted. ampere turn (at): in magnetic particle testing, unit for expressing the magnetomotive force required for magnetization using a coil in terms of the product of the number of coil turns and the current in amperes flowing through the coil. amplitude, echo: in ultrasonic testing, the vertical height of a received signal on an a-scan, measured from base to peak for a video presentation or from peak to peak for a radio frequency presentation.
- Measure of the intensity of particle motion in degrees celsius (°c), degrees fahrenheit (°f) or, in the absolute scale, kelvin (k) or degrees rankine (°r). an increment of 1 k = 1 °c = 1.8 °r = 1.8 °f. compare heat.
Температура, русский
- Температура , низкая температура
- (от лат . temperatura - надлежащее смешение, нормальное состояние), физическая величина, характеризующая состояние термодинамического равновесия системы. температура всех частей изолированной системы, находящейся в равновесии, одинакова. если система не находится в равновесии, то между ее частями, имеющими различную температуру, происходит теплообмен. более высокой температурой обладают те тела, у которых средняя кинетическая энергия молекул (атомов) выше. измеряют температуру термометрами на основе зависимости какого-либо свойства тела (объема, электрического сопротивления и т. п.) от температуры. теоретически температура определяется на основе второго начала термодинамики как производная от энергии тела по его энтропии. так, определяемая температура всегда положительна, ее называют абсолютной температурой или температурой по термодинамической температурной шкале (обозначается т). за единицу абсолютной температуры в си принят кельвин (к). значения температуры по шкале цельсия (t, °с) связаны с абсолютной температурой соотношением t=t-273,15k (1 °с=1 к).
Температур, русский
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Luminance temperature, английский
Яркостная температура
Lightblue, английский
Ярко-синий; светло-голубой
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