Source: R/munsell2rgb.R

Rgb To Munsell
Munsell Color Chart Online

Rgb To Munsell

Convert sRGB color coordinates to the closest n Munsell chips in the munsell lookup table.

Arguments

Non-standard Munsell notation (e.g. '7.9YR 2.7/2.0') can be matched (nearest-neighbor, no interpolation) to the closest color within the munsell sRGB/CIELAB look-up table via getClosestMunsellChip. A more accurate estimate of sRGB values from non-standard notation can be achieved with the munsellinterpol package. The present invention provides a kind of conversion method of CIELAB color systems to Munsell Color Order System, it is characterised in that comprise the following steps：Obtain the CIELAB colors P of target；Munsell value value V is calculated using linear interpolation method P ；Judge color P lightness faces residing in the Munsell colour space；Munsell tone value H is calculated using.

color	a `data.frame` or `matrix` object containing sRGB coordinates in the range of (0,1)
colorSpace	distance metric (colorspace) to use for finding the closest chip: CIE2000 is the most accurate but requires farver >= 2.0.3, Euclidean distance in CIELAB is a close second, while Euclidean distance in sRGB is not at all accurate and should only be used for demonstration purposes.
nClosest	number of closest Munsell colors to return (valid range is 1-20)

Value

an (NA-padded) data.frame containing hue, value, chroma, and distance (dE00 when colorSpace = 'CIE2000', Euclidean distance otherwise) to nearest matching color.

Note

Munsell Color Chart Online

This function is fully vectorized and will pad output with NA-records when NA are present in color.

References

Author

D.E. Beaudette

Examples

Rgb To Munsell Converter Weight