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Using the controls for gamma, contrast and brightness, the gamma correction on an LCD can only be done for one specific vertical viewing angle, which implies one specific horizontal line on the monitor, at one specific brightness and contrast level. An ICC profile allows one to adjust the monitor for several brightness levels. The quality (and ...
When appearing on light bulb packages, brightness means luminous flux, while in other contexts it means luminance. [5] Luminous flux is the total amount of light coming from a source, such as a lighting device. Luminance, the original meaning of brightness, is the amount of light per solid angle coming from an area, such as the sky.
When n = 1 / 5 , cz = 1, representing the assumption that most scenes have an average relative luminance of 1 / 5 compared to bright white, and that therefore a sample in such a surround should be perceived at its proper lightness. The quantity A models the achromatic cone response; it is colour dependent but for a grey sample ...
The lux (symbol: lx) is the unit of illuminance, or luminous flux per unit area, in the International System of Units (SI). [1] [2] It is equal to one lumen per square metre.In photometry, this is used as a measure of the irradiance, as perceived by the spectrally unequally responding human eye, of light that hits or passes through a surface.
[5] Saturation is the "colorfulness of an area judged in proportion to its brightness", [6] [2] which in effect is the perceived freedom from whitishness of the light coming from the area. An object with a given spectral reflectance exhibits approximately constant saturation for all levels of illumination, unless the brightness is very high. [7]
An aircraft landing at Zurich Airport, with runway edge lights visible. Runway edge lighting is used to outline the edges of runways during periods of darkness or restricted visibility conditions.
Sunshine duration or sunshine hours is a climatological indicator, measuring duration of sunshine in given period (usually, a day or a year) for a given location on Earth, typically expressed as an averaged value over several years.
Star Entertainment is the top entertainment agency in China. It was set up by a couple, Cheng Tianhao and Du Wanqing, who eventually separated due to differing beliefs in managing the company. Yang Zhenzhen is an aspiring young girl with a passion for music. She joined Starry Sky Entertainment and was assigned as Zheng Boxu's assistant.