Size constancy

Japanese: 大きさの恒常性 - おおきさのこうじょうせい
Size constancy

...According to E. Land, this is because the perceptual system distinguishes the relative reflectance of red, green, and blue light, which is probably based on color contrast. Size constancy refers to the phenomenon in which an object's size appears the same even if its distance is changed, and shape constancy refers to the phenomenon in which an object's shape appears the same even if the viewing angle is changed. These indicate that the perceptual system takes into account distance and the inclination of the surface in addition to the size and shape of the retinal image. ...

*Some of the terminology that refers to "size constancy" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ランドE.Landによると,これは知覚系が,赤,緑,青の色光の相対的な反射率を識別しているためで,これもおそらく色の対比がもとになっていると思われる。大きさの恒常性は,対象の距離を変えてもその大きさが同じに見える現象をいい,形の恒常性は,見る角度を変えても形が同じに見える現象をいう。これらは知覚系が網膜像の大きさや形のほかに,距離や面の傾きを計算に入れていることを示している。…

※「大きさの恒常性」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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