munsellinterpol: MunsellToLab – R documentation

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MunsellToLab

Convert a Munsell specification to CIE Lab coordinates

MunsellToLab Converts a Munsell specification to CIE Lab coordinates, by interpolating over the extrapolated Munsell renotation data

MunsellToLab( MunsellSpec, white=c(95.047,100,108.883), adapt='Bradford', ... )

`MunsellSpec`	a numeric Nx3 matrix with HVC values in the rows, or a vector that can be converted to such a matrix, by row. `MunsellSpec` can also be a character vector with Munsell Notations, which is converted to an Nx3 matrix using `HVCfromMunsellName()`
`white`	XYZ for the destination white. The default is Illuminant=D65, 2 observer
`adapt`	method for chromatic adaptation, see `CAT()` for valid values. Also see Details.
`...`	other parameters passed to `MunsellToXYZ()`

The conversion is done in 3 steps.

HVC → XYZ using MunsellToXYZ()
XYZ is adapted from Illuminant C to the given white using adaptXYZ() and the given chromatic adaptation method
XYZ → Lab using LabfromXYZ() with the given white

An Nx3 matrix with the Lab coordinates in each row. The rownames are copied from input to output.

Jose Gama and Glenn Davis

MunsellToLab('7.6P 8.9/2.2')

Interpolate Munsell Renotation Data from Hue/Chroma to CIE/RGB

v2.6-1

GPL (>= 3)

Authors

Jose Gama [aut, trl], Paul Centore [aut, cph], Glenn Davis [aut, cre]

Initial release

2020-02-02