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亮度luminance, brightness 和 lightness 之间的区别

2016-05-09 09:16阅读:
Difference between luminance, brightness, and lightness
Brightness is a subjective attribute of light. The monitor can be adjusted to a level of light between very dim and very bright. Brightness is perceived and cannot be measured objectively (but scaled, e.g. in %).
所以,手机的亮度都是用百分比衡量的,用brightness。
不主动发光。只是说发出的光的亮度。
Brightness: The perception elicited by the luminance of an object.


Luminance is the luminous intensity, projected on a given area and direction. Luminance is an objectively measurable attribute. The unit is 'Candela per Square Meter' (cd/m2). So, different monitors can be adjusted to the same luminous intensity by measuring the luminance in c
d/m2.
a state or quality of radiating or reflecting light 亮度
the quality of being luminous; emitting or reflecting light
这个亮度的单位通常是cd/m2。电脑屏幕的亮度经常用到这个词。
主动发光。


As nouns the difference between brightness and luminance is that brightness is the quality of being bright while luminance is the quality of being luminous.
luminous 是指发光的,Something that is luminous shines or glows in the dark. 发亮的
比如手表或时钟上发光的表盘:The luminous dial on the clock showed five minutes to seven. 时钟上发光的表盘显示当时7点差5分。
You look at a star for two reasons, because it is luminous, and because it isimpenetrable. 你望一颗星,有两个动机,因为它是发光的,又因为它是望不透的。 (星星是发光的)
光亮度(luminance)又称发光率,是指一个表面的明亮程度,以L表示, 即从一个表面反射出来的光通量。或者说是指在某方向上单位投影面积的面光源沿该方向的发光强度。




lightness
the visual effect of illumination on objects or scenes as created in pictures
这个词有多个意思,更多表示light adj. 轻的。the property of being comparatively small in weight
与darkness相对。

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