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luminance

luminance

1 7.1
The brightness of a surface as seen by the eye
  • noun
  • /ˈluːmɪnəns/
  • Specialized
translation icon : luminancia
  • The photographer adjusted the settings to enhance the luminance of the image, making it brighter.
  • pixel luminance
  • luminance signal
  • average luminance

Pull down that saturation and up the luminance a little bit.

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Examples

  • Luminance is "lightness:" Each pixel has a filter over it so it captures luminance in only one channel: red, green, or blue.

    Academic text (2009)
  • The eye is much more sensitive to differences in color than to luminance or grayscale differences.

    Academic text (1992)
  • Pull down that saturation and up the luminance a little bit.

  • "What is it, then?" Adam's dark eyes had taken on their familiar inner luminance.

    Fiction book (1991)
  • If the camera only captures a single luminance value for each pixel, how do we end up with three?

    Academic text (2009)
  • Recall that the sensor pixels capture luminance data: red, green, or blue luminance data.

    Academic text (2009)
  • The closer two colors are in luminance, said Livingstone, the more they seem to shimmer.

    Blog text (3)
  • It is the interaction between luminance light and the edges of static objects which creates the illusion of motion of those objects.

  • In normal operation, the overall variation was 11.0% of the peak luminance, while in bootstrapped operation the variation was 7.2%.

    Academic text (2000)
  • All the investigations were done with a surrounding luminance density between 150 cd/m² and 300 cd/m².

    Academic text (2010)

Synonyms

brightness
vsluminance
41 1.0

How much light something gives or how close it looks to white

is a precise measure of surface light as perceived and quantified
brilliance
vsluminance
8 4.5

A very bright light that makes it hard to see

describes measurable steady surface light rather than extreme, dazzling intensity
luminosity
vsluminance
  • Specialized
4 7.3

How much light an object gives or reflects

is specifically about measurable surface light as perceived in vision and photography
radiance
vsluminance
  • Specialized
1 6.8

The amount of light or heat that comes from a surface in one direction

focuses on perceived surface light rather than raw radiation measures
brightness level
vsluminance
1 3.3

The amount of light a thing gives or reflects

measures perceived light from a surface as seen by eye and in imaging
lightness
vsluminance
  • Specialized
1 4.3

A brightness in an image or scene that changes mood

is the measurable surface light value rather than an artistic tonal quality
radiancy
vsluminance
1 8.9

Bright, strong light that shines from something like the sun or a diamond

is more technical, measuring surface light as seen and in instruments
luminousness
vsluminance
7.0

How bright something is because it gives or reflects light

adds a focus on measurement and human perception of surface light

Antonyms

534 1.0

A time or place with almost no light

4 3.4

Low light that makes it hard to see

Compounds

luminance unit
  • Specialized
7.2

A measure of how bright a surface appears

How Bright

glare
37 3.3
luminosity
  • Specialized
4 7.3
luminance
  • Specialized
1 7.1
lowlight
4.6
darkness
534 1.0

Surface Forms

luminance singular
luminances plural

Morphology

luminance = luminous (transparent) = lumin + ance

The suffix '-ance' denotes a state or quality, making the meaning clear as the state of being luminous.

Etymology

Luminance comes from the Latin root lumen, meaning 'light', and it is the same root you see in luminous and illuminate. So luminance refers to the 'brightness' of a surface, the amount of light we can see or measure.