luma

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luma

The black/gray/white information in a video signal, represented as the letter "Y." Color information is transmitted as luma (brightness) and chroma (color). The luma is a weighted sum of the RGB colors. See luminance, YUV and YUV/RGB conversion formulas.
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References in periodicals archive ?
LUMAS Galleries is moving into the former City Market Cafe space.
Lumas was a disturbed and disturbing character, who had been involved in a tussle with Charles Darwin, and held exotic beliefs regarding the nature of reality.
In the Mapuche language oncol means steep mountain, and the rain forest here is home to a wealth of trees, like the giant coigues, robles, maitines, olivillos, ulmos, lumas, pitras, and arrayanes, to name just a few.
Each job goes out to bid separately, said Lumas Kendrick, the research engineer for the solar project.
Eva Marie Lumas of Oakland, Calif., did just that when she asked those attending a recent symposium to imagine "what it would feel like to put right relationships at the center of all our lives." Lumas challenged the attendees to envision, and then enact, "a beloved community in which all are welcome and all feel safe."
Lumas, a German-based art photography gallery, just leased space at 77 Wooster Street.
More recently he seems to focus on his LUMAS model, which appears to be based on Argyris and Schon's (1996) double loop learning.