colourvision-package: Colour Vision Models

In colourvision: Colour Vision Models

Colour Vision Models

Description

Colour vision models, colour spaces and colour thresholds. Provides flexibility to build user-defined colour vision models for n number of photoreceptor types. Includes Vorobyev & Osorio (1998) Receptor Noise Limited models <doi:10.1098/rspb.1998.0302>, Chittka (1992) colour hexagon <doi:10.1007/BF00199331>, and Endler & Mielke (2005) model <doi:10.1111/j.1095-8312.2005.00540.x>. Models have been extended to accept any number of photoreceptor types.

Details

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Author(s)

Felipe Malheiros Gawryszewski [aut, cre]

Maintainer: Felipe Malheiros Gawryszewski <[e-mail]>

References

Gawryszewski, F.M. 2018. Colour vision models: Some simulations, a general n-dimensional model, and the colourvision R package. Ecology and Evolution, 10.1002/ece3.4288.

Examples

##Honeybee photoreceptor sensitivity curves
data("bee")

##Grey background:
## with 10 percent. reflectance from 300 to 700nm:
Rb <- data.frame(300:700, rep(10, length(300:700)))

## Read CIE D65 standard illuminant already converted to quantum flux:
data("D65")

##Reflectance data
## with a sigmoid spectrum and midpoint at 500nm and 550 nm
R1<-logistic(x=seq(300,700,1), x0=500, L=50, k=0.04)
R2<-logistic(x=seq(300,700,1), x0=550, L=50, k=0.04)
R<-cbind(R1, R2[,2])

## Run colour vision model:
model<-CTTKmodel(photo="tri", R=R, I=D65, Rb=Rb,
C=bee)

##plot data in the colour space
plot(model)

colourvision documentation built on April 13, 2025, 5:11 p.m.