Mathematical relationship between the colour vision systems of trichromats and dichromats

✍ Scribed by P.J. Bouma

• Publisher: Elsevier Science
• Year: 1942
• Weight: 505 KB
• Volume: 9
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(42)80054-3

✦ Synopsis

In § 1 and § 2 the experimental laws governing the colour vision of trichromats and dichromats are briefly discussed and the eye is compared to a system of three or two photo-cells. In § 3 starting from the G r a s sin a n n laws and the fact that a colour match made by a trichromat is also admitted as correct by the dichromat, two general laws are proved: a) the dichromatic distribution curves are'linear functions of the trichromatic distribution curves.

b) when a suitable linear transformation is applied, these distribution curves (spectral sensitivities of the photo-cells) take the form of scheme (6).

In § 4 the functions of this scheme are determined numerically from P i tt's experimental data on dichromats. In § 5 the results are discussed in connection with the Youn g-Helmholtz-K6nig theory of colour vision and with the colour adaptation experiments made by Wright.