Q {colourvision} | R Documentation |
Total photon capture
Description
Total photoreceptor photon capture for a given irradiance, reflectance and photoreceptor sensitivity curve. This function is used internally in colour vision models.
Usage
Q(R,I,C,interpolate,nm)
Arguments
R |
Reflectance of observed object. A data frame with two columns only: first column corresponding to wavelength values and second column with reflectance values. |
I |
Irradiance spectrum. A data frame with two columns only: first column corresponding to wavelength values and second column with irradiance values. Irradiance values must be in quantum flux units. |
C |
Photoreceptor sensitivity curve. A data frame with two columns only: first column corresponding to wavelength values and second column with photoreceptor absorbance values. |
interpolate |
Whether data files should be interpolated before further calculations. See |
nm |
A sequence of numeric values specifying where interpolation is to take place. See |
Value
Gives the total photoreceptor photon capture.
Author(s)
Felipe M. Gawryszewski f.gawry@gmail.com
References
Backhaus, W., and R. Menzel. 1987. Color distance derived from a receptor model of color vision in the honeybee. Biological Cybernetics 55:321-331.
Chittka, L. 1992. The colour hexagon: a chromaticity diagram based on photoreceptor excitations as a generalized representation of colour opponency. J Comp Physiol A 170:533-543.
Endler, J. A., and P. Mielke. 2005. Comparing entire colour patterns as birds see them. Biol J Linn Soc 86:405-431.
Vorobyev, M., and D. Osorio. 1998. Receptor noise as a determinant of colour thresholds. Proceedings of the Royal Society B 265:351-358.
See Also
Qr
, CTTKmodel
, EMmodel
, RNLmodel
, RNLthres
,GENmodel