Polychrome (version 1.2.3)

colorDeficit: Converting Colors to Illustrate Color Deficient Vision

Description

Function to convert any palette to one that illustrates how it would appear to a person with a color deficit.

Usage

colorDeficit(rgb, target = c("deuteranope", "protanope", "tritanope"))

Arguments

rgb

A color palette. Accepts hexademical representations, sRGB class objects from the colorspace package, or three-column sRGB matrices.

target

The kind of color deficit to simulate.

Value

Returns a color palette in the same form as its input argument.

Details

This function converts normal-vision color palettes into simulations that represent what is likely to be seen with one of the three kinds of color deficits. Deuteranopes are red-blind, which is the most common form of color deficit leading to an inability to distinguish red and green. Protanopes are green-blind; this is the second most common form of color-blindness and also leads to an inability to distinguish red and green. Tritanopes are blue blind; this is the rarest form of color blindness and leads to an inability to distinguish blue and yellow.

References

[1] http://www.vischeck.com/

[2] Brettel H, Vienot F, Mollon JD. Computerized simulation of color appearance for dichromats. J Opt Soc Am A Opt Image Sci Vis. 1997 Oct;14(10):2647-55. PubMed PMID: 9316278.

[3] Vienot F, Brettel H, Ott L, Ben M\'Barek A, Mollon JD. What do colour-blind people see? Nature. 1995 Jul 13;376(6536):127-8. PubMed PMID: 7603561.

See Also

color-class

Examples

# NOT RUN {
alfa <- alphabet.colors(26)
def <- colorDeficit(alfa)
swatch(def)
# }