# gamma correction

> English word · Noun

## Definitions
1. A nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems.

## Etymology
From the use of the Greek letter gamma in the mathematical notation.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/gamma-correction