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chrominance

chrominance

1 8.3
The part of a picture or video that shows color, not brightness
  • noun
  • /ˌkroʊmɪˈnæns/
  • Specialized
translation icon : crominancia
  • Figure 4c shows one such color-filter pattern designed to provide the best possible intensity (luminance) information in a single imaging chip without undue sacrifice of color (chrominance) information.
  • chrominance signal
  • luminance and chrominance

Examples

  • Into this comb of quiet regions in the luminance signal, the NTSC inserted the chrominance signal (Figure 3).

    Academic text (1999)
  • Here, Y is again the luminance component, and C_r C_b is the chrominance component.

    Academic text (1992)
  • By inserting the chrominance signal's power in between those harmonics (la), the two are kept from interfering with one another.

    Academic text (1999)
  • The luminance and chrominance power spectra interdigitate perfectly and share the channel's frequency space with almost no noticeable effects on one another.

    Academic text (1999)
  • Here Y, called the luminance component, is correlated with lightness, and the remaining two coordinates, called the chrominance component, are correlated with hue and saturation.

    Academic text (1992)
  • This spectral sharing is aided by the fact that our eyes are less sensitive to color detail than to brightness detail, so that the NTSC was able to limit the chrominance bandwidth to just 1.5 MHz below and 0.5 MHz above its subcarrier.

    Academic text (1999)
  • In video technology, chrominance refers to the part of a signal that represents color, distinct from brightness.

  • The artist carefully balanced the chrominance of the paints to achieve a vivid portrayal.

  • When editing the video, we adjusted the chrominance settings to enhance the overall color quality.

Synonyms

color
vschrominance
  • US
1.0

The way something looks because of its red, blue, or green shade

represents hue and saturation within an image signal separate from brightness
chromaticity
vschrominance
  • Specialized
1 9.9

How a color looks by its hue, not its brightness

includes hue and saturation together as a signal component separate from brightness

How Colorful

vivid
23 3.0
chroma
  • Specialized
1 9.3
chrominance
  • Specialized
1 8.3
muted
10 4.2
monochrome
4 6.3

Surface Forms

chrominance singular
chrominances plural

Morphology

chrominance = chroma (semi-transparent) = chroma + inance

The word is built on the color term 'chroma', but the specialized video-signal meaning is not fully predictable for a general learner.

Etymology

Chrominance comes from the Greek root chroma meaning 'color' and the ending -ance meaning 'state or quality'. You can see the same root in chrome and chromatic, which are about color, so chrominance is the 'color' part of an image or video, separate from brightness.