LUMA

Luma

In video, luma represents the brightness in an image . Luma is typically paired with chrominance. Luma represents the achromatic image, while the chroma components represent the color information. Converting R'G'B' sources into luma and chroma allows for chroma subsampling: because human vision has finer spatial sensitivity to luminance differences than chromatic differences, video systems can store chromatic information at lower resolution, optimizing perceived detail at a particular bandwidth.

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luma

Noun

  1. currency unit of Armenia, worth one hundredth of Armenian dram

Noun (etymology 2)

  1. The brightness in an image, as opposed to the saturation or chroma.


The above text is a snippet from Wiktionary: luma
and as such is available under the Creative Commons Attribution/Share-Alike License.

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