V2EX chromaticity

Chromaticity

Definition / 释义

chromaticity(色度):描述颜色“是什么颜色、纯不纯”的属性,通常指色相(hue)与饱和度(saturation)等与颜色相关的特征,不包含亮度/明度(luminance)。常用于色彩科学、显示技术与色度学(colorimetry)中。(在不同体系里,色度的具体参数表示方式会有所不同,如 CIE 色度坐标等。)

Pronunciation / 发音

/kromtsti/

Examples / 例句

Adjust the chromaticity to make the image look warmer.
调整色度,让图像看起来更偏暖色。

In the CIE diagram, points with the same chromaticity but different luminance represent the same perceived color under ideal conditions.
在 CIE 色度图中,若色度相同而亮度不同,这些点在理想条件下可表示同一种感知颜色(只是明暗不同)。

Etymology / 词源

来自希腊语 chroma(颜色)+ 英语构词后缀 -icity(表示“性质/状态”)。词根先形成 chromatic(与颜色有关的),再派生为 chromaticity,强调“颜色属性/色彩特性”这一概念。

Related Words / 相关词

Literary Works / 文学作品

  • Wyszecki & Stiles, Color Science: Concepts and Methods, Quantitative Data and Formulae(色彩科学经典教材,频繁使用 chromaticity 讨论 CIE 色度坐标与色彩测量)
  • Günter Wyszecki, Colorimetry(以色度学为核心的著作,chromaticity 是关键术语之一)
  • R. W. G. Hunt, The Reproduction of Colour(色彩再现领域名著,涉及显示与印刷中的色度控制与色度图)
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