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% Psychtoolbox:PsychColorimetric.
%
% Colorimetric and spectral calculations. See also Psychtoolbox:PsychColorimetricData.
% And also see the closely related Psychtoolbox:PsychRadiometric. Sometimes it is
% not entirely clear whether a routine should be classified as colorimetric or
% radiometric. Apologies if our intuitions don't match yours
%
% help Psychtoolbox % For an overview, triple-click me & hit enter.
% help PsychColorimetricData % For colorimetric calculations, triple-click me & hit enter.
% help PsychColorimetricMatFiles % For list of data .mat files, triple-click me & hit enter.
% help PsychRadiometric % For list of data .mat files, triple-click me & hit enter.
%
% AbsorbanceToAbsorbtance - Obsolete. Use AbsorbanceToAbsorptance (spelling fixed).
% AbsorbanceToAbsorptance - Convert absorbance to absorptance spectrum.
% AbsorbtanceToAbsorbance - Obsolete. Use AbsorptanceToAbsorbance (spelling fixed).
% AbsorptanceToAbsorbance - Convert absorptance to absorbance spectrum.
% CheckWls - Check consistency of two wavelength descriptions.
% ComputeDE - Compute vector length between matrix columns.
% ComputeDE2000_Lab - Compute deltaE values (CIEDE200) for color pairs given in L*a*b* coordinates.
% ComputeDKL_M - Compute transformation matrix for DKL color space.
% ComputeAxialDensity - Compute axial optical density from specific density and path length.
% ComputePhotopigmentBleaching - Compute fraction of photopigment bleached.
% ConeIncToDKL - Convert from cone increments to DKL.
% ContrastToExcitation - Convert contrast to excitation coordinate.
% ContrastToIncrement - Convert contrast to incremental coordinates.
% ConvertRGBSourceToRGBTargetColorSpace - Convert an image from a RGB source colorspace to a RGB target colorspace.
% DKLToConeInc - Convert from DKL to cone increments.
% DrawChromaticity - Plot chromaticity diagram w spectrum locus (provided by Danny Garside).
% EffectiveTrolandsFromLum - Compute effective trolands from luminance.
% EnergyToCones - Convert monochromatic energy to cone excitations.
% ExcitationToContrast - Convert excitation coordinates to contrast.
% FindCmfPeaks - Find the peak wavelength and values of a set of color matching functions.
% FindCovLinMod - Find linear model from covariance matrix.
% FindLinMod - Find linear model for an ensemble of vectors.
% FindModelWeights - Find the weights with respect to a linear model.
% FToRatio - Subroutine for Lab/Luv conversions.
% GenerateBlackBody - Generate spectra for black body radiators.
% GenerateCIEDay - Generate CIE daylights.
% IncrementToContrast - Convert incremental coordinates to contrast.
% IsomerizationsFromAbsorbptions - Compute isomerization rate from absorption rate.
% LabToXYZ - Convert from Lab to XYZ.
% LjgToXYZ - Convert from OSA UCS Ljg to XYZ (10 degree).
% LumToRadiance - Get spectral radiance from luminance and relative spectrum of source.
% LumToTrolands - Convert luminance (cd/m2) to trolands.
% LuvToXYZ - Convert from Luv to XYZ.
% LMSToMacBoyn - Convert from cones to MacLeod-Boynton chromaticity.
% MakeFourierBasis - Make a set of Fourier component basis functions.
% MakeGaussBasis - Make a set of Gaussian basis functions.
% MakeItS - Force wavelength sampling spec. to S format.
% MakeItStruct - Force wavelength sampling spec. to struct foramt.
% MakeItWls - Force wavelength sampling spec. to wls format.
% MakeMonoPrimary - Make the spd of a monochromatic primary.
% MakeOrtho - Make a set of basis functions orthonormal.
% MakeUnitLength - Make the columns of a matrix have unit length.
% MonoImageToSRGB - Convert a monochrome image to an sRGB color image at passed chromaticity.
% M_PToP - Conversion matrix from source/dest. primaries.
% M_PToT - Conversion matrix from source primaries and dest. cmfs.
% M_TToP - Conversion matrix from source cmfs and dest. primaries.
% M_TToT - Conversion matrix from source/dest. cmfs.
% PhotonAbsorptionRate - Compute photon absoroption rate.
% PupilDiameterFromLum - Estimate pupil diameter from luminance.
% PsychMunsell - Munsell renotation to xyY conversion.
% RetIrradianceToIsoRecSec - Convert retinal irradiance (power units) to iso. per receptor per second.
% RGBToXYZMatrix - Build a 3x3 CSC matrix for converting some RGB color space to XYZ space.
% SampleCircle - Sample points on a circle.
% SampleSphere - Sample points on a sphere.
% ShiftSpectra - Shift a spectral function along the wavelength axis.
% SPDToCCT - Find correlated color temperature of a spectrum.
% SPDToLinSPD - Find approximation within specified linear model.
% SPDToMetSPD - Find a metameric spd.
% SplineCmf - Spline color matching functions to new wavelength sampling.
% SplineRaw - Subroutine for other spline functions.
% SplineSpd - Spline a spectral power distribution to new wavelength sampling.
% SplineSrf - Spline a surface reflectance function to new wavelength sampling.
% SRGBPrimaryToXYZ - Convert between sRGB primary coordinates and XYZ.
% SRGBGammaCorrect - Convert between sRGB primary coordinates and 8-bit RGB values.
% SRGBGammaUncorrect - Convert between sRGB 8-bit RGB values and primary coordinates.
% SToWls - Convert S wavelength sampling spec to wls format.
% TriToMetSPD - Compute metamer from tristimulus coordinates.
% WattsToRetIrradiance - Get absolute retinal irradiance (power units) from rel. spectrum and watts/area.
% uvTols - Convert between CIE u'v' and a cone based (ls) chromaticity.
% uvToxy - Convert between CIE u'v' and CIE xy chromaticity.
% uvYToXYZ - Convert between u'v'Y and XYZ.
% WlsToS - Convert wls wavelength sampling spec to S format.
% WlsToT - Compute identity color matching matrix from wavelength sampling.
% xyTouv - Convert CIE xy chromaticity to CIE u'v' chromaticity.
% xyYToXYZ - Convert between xyY and XYZ.
% XYZToF - Subroutine for Lab/Luv calculations.
% XYZToLab - Convert between XYZ and Lab.
% XYZToLjg - Convert between XYZ (10 degree) and OSA UCS Ljg.
% XYZToLuv - Convert between XYZ and Luv.
% XYZToRGBMatrix - Build a 3x3 CSC matrix for converting XYZ space to some RGB color space.
% XYZToSRGBPrimary - Convert between XYZ and sRGB primary coordinates.
% XYZTouv - Compute uv chromaticities from XYZ.
% XYZTouvY - Convert between XYZ and u'v'Y.
% XYZToxyY - Convert between XYZ and xyY.
% Copyright (c) 1996-2020 by David Brainard, Denis Pelli, & Mario Kleiner
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