Aperture color

Japanese: 開口色 - かいこうしょく
Aperture color

...Therefore, when considering colors, we must distinguish between colors that belong to an object and colors that do not. The former are called object colors, and the latter are called light source colors or aperture colors because they are seen through a hole. When arranging colors as in Figure 1, it is necessary to make it clear whether we are referring to object colors or light source colors. ...

*Some of the terminology that refers to "opening color" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…したがって色を考える場合には,物体に属する色と属さない色とを区別しなければならない。前者を物体色,後者を光源色あるいは穴を通して見るから開口色と呼んでいる。図1のような色の配列をする場合には物体色を対象としているのか光源色を対象としているのかをはっきりしておかねばならない。…

※「開口色」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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