Package 'colorscience'

Description

ASTM.D1925.YellownessIndex was developed for the definition of the Yellowness of homogeneous, non-fluorescent, almost neutral-transparent, white-scattering or opaque plastics as they will be reviewed under daylight condition.

Usage

ASTM.D1925.YellownessIndex(XYZmatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

XYZ<-c(0.1146538, 0.08391198, 0.08222077)
ASTM.D1925.YellownessIndex(XYZ)

Description

ASTM.E313.Whiteness ASTM E313 Whiteness.

Usage

ASTM.E313.Whiteness(XYZmatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

XYZ<-c(0.1146538, 0.08391198, 0.08222077)
ASTM.E313.Whiteness(XYZ)

Description

ASTM.E313.YellownessIndex ASTM E313 has successfully been used for a variety of white or near white materials.

Usage

ASTM.E313.YellownessIndex(XYZmatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

XYZ<-c(0.1146538, 0.08391198, 0.08222077)
ASTM.E313.YellownessIndex(XYZ)

Description

Berger59.Whiteness formula was developed by A. Berger (formerly employee of Bayer AG, Germany and was presented in 1959.

Usage

Berger59.Whiteness(xyYmatrix, illuminant = "C", observer = 2, RefWhite =
                 get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
Berger59.Whiteness(xyY)

Description

BVR2XYZ convert from BVR coordinates to XYZ.

Usage

BVR2XYZ(BVRmatrix)

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2014 http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_T.html

References

Bruce Justin Lindbloom, 2014 http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_T.html

Description

cccie31 is a table with CIE (1931) 2-deg chromaticity coordinates.

Usage

cccie31

Format

This data frame contains the following data:

wlnm

wavelength (nm)

x

x chromaticity coordinate

y

y chromaticity coordinate

z

z chromaticity coordinate

Author(s)

Jose Gama

Source

Commission Internationale de l'Eclairage Proceedings, 1931 Cambridge: Cambridge University Press.

References

Commission Internationale de l'Eclairage Proceedings, 1931 Cambridge: Cambridge University Press.

Examples

data(cccie31)
cccie31

Description

cccie64 is a table with CIE (1964) 10-deg chromaticity coordinates.

Usage

cccie64

Format

This data frame contains the following data:

wlnm

wavelength (nm)

x

x chromaticity coordinate

y

y chromaticity coordinate

z

z chromaticity coordinate

Author(s)

Jose Gama

Source

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

References

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

Examples

data(cccie64)
cccie64

Description

CCT2XYZ Converts correlated color temperature (CCT) to CIE tristimulus XYZ.

Usage

CCT2XYZ(CCTmatrix)

Arguments

Value

CIE tristimulus XYZ

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com/

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com/

Examples

CCT2XYZ(c(0.310897, 0.306510, 74.613450))

Description

CentralsISCCNBS is a table with Central notations for the revised ISCC-NBS Color-Name Blocks.

Usage

CentralsISCCNBS

Format

This data frame contains the following data:

Number

notation number

Name

notation name

MunsellSpec

Munsell specification

Author(s)

Glenn Davis

References

Kelly, Kenneth Low, 1910 Central notations for the revised ISCC-NBS Color-Name Blocks Journal of Research of the National Bureau of Standards Research Paper 2911, Vol. 61 No. 5, November 1958

Examples

data(CentralsISCCNBS)
CentralsISCCNBS

Description

CheckColorLookup Checks that the color block number is correct.

Usage

CheckColorLookup(DataISCCNBS)

Arguments

Value

logic

Author(s)

Glenn Davis

Description

ChromaticAdaptation chromatic adaptation algorithms implemented as a linear transformation (XYZ Scaling, Bradford and Von Kries).

Usage

ChromaticAdaptation

Format

This array frame contains the following dimensions:

1

rows transformation matrix 3x3

2

columns transformation matrix 3x3

3

linear transformation (XYZ Scaling, Bradford or Von Kries)

4

transformation "direct" or "inverse"

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com/

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com/

Examples

data(ChromaticAdaptation)
ChromaticAdaptation

Description

chromaticity.diagram Plots the chromaticity diagram AKA "horse shoe".

Usage

chromaticity.diagram(chromaticityCoordinates=get("cccie31", envir = environment()), 
conversionFunction=NULL,...)

Arguments

Value

none

Author(s)

Jose Gama

Examples

chromaticity.diagram()
xl<-yl<-0:1
chromaticity.diagram(xlim=xl,ylim=yl)
chromaticity.diagram(conversionFunction=CIE1931XYZ2CIE1976uv, xlim=xl,ylim=yl,
xlab="u'",ylab="v'")

Description

chromaticity.diagram.color Plots the chromaticity diagram AKA "horse shoe", as a black line, a color line or a polygon.

Usage

chromaticity.diagram.color(chromaticityCoordinates=get("cccie31", envir = environment()), 
conversionFunction=NULL, granularity=10, ...)

Arguments

Value

none

Author(s)

Jose Gama

Examples

chromaticity.diagram.color()
xl<-yl<-0:1
chromaticity.diagram.color(xlim=xl,ylim=yl)
chromaticity.diagram.color(conversionFunction=CIE1931XYZ2CIE1976uv, xlim=xl,
ylim=yl,xlab="u'",ylab="v'")

Description

CIE.Whiteness The CIE Whiteness index is widely used in the industry for D65 for 2 or 10 deg observer.

Usage

CIE.Whiteness(xyYmatrix, illuminant = "D65", observer = 2, RefWhite
                 = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
CIE.Whiteness(xyY)

Description

CIE1931xy2CIE1960uv Converts CIE 1931 xy color space to CIE 1960 uv color space.

Usage

CIE1931xy2CIE1960uv(xymatrix)

Arguments

Value

CIE 1960 uv coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

xyY <- cbind(0.4083308, 0.2988462, 0.08391198)
CIE1931xy2CIE1960uv(xyY)

Description

CIE1931xy2CIE1976uv Converts CIE 1931 xy color space to CIE 1976 uv color space.

Usage

CIE1931xy2CIE1976uv(xymatrix)

Arguments

Value

CIE 1976 uv coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

xyY <- cbind(0.4083308, 0.2988462, 0.08391198)
CIE1931xy2CIE1976uv(xyY)

Description

CIE1931XYZ2CIE1931xyz Converts CIE 1931 XYZ color space to CIE 1931 xyz color space.

Usage

CIE1931XYZ2CIE1931xyz(XYZmatrix)

Arguments

Value

CIE 1931 xyz coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

XYZ<-c(0.11465380, 0.08391198, 0.08222077)
CIE1931XYZ2CIE1931xyz(XYZ)

Description

CIE1931XYZ2CIE1960uv Converts CIE 1931 XYZ color space to CIE 1960 uv color space.

Usage

CIE1931XYZ2CIE1960uv(XYZmatrix)

Arguments

Value

CIE 1960 uv coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

XYZ<-c(0.11465380, 0.08391198, 0.08222077)
CIE1931XYZ2CIE1960uv(XYZ)

Description

CIE1931XYZ2CIE1976uv Converts CIE 1931 XYZ color space to CIE 1976 uv color space.

Usage

CIE1931XYZ2CIE1976uv(XYZmatrix)

Arguments

Value

CIE 1976 uv coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

XYZ<-c(0.11465380, 0.08391198, 0.08222077)
CIE1931XYZ2CIE1976uv(XYZ)

Description

CIE1960UCS2CIE1964 Converts CIE 1960 UCS color space to CIE 1964 color space.

Usage

CIE1960UCS2CIE1964(uvYmatrix, illuminant = "D65", observer = 2, RefWhite =
                 get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

CIE 1976 uv coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1964 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

CIE1960UCS2CIE1964(c(0.1633789, 1.322222, 0.08391198))

Description

CIE1960UCS2xy Converts CIE 1960 UCS color space to 1960 xy color space.

Usage

CIE1960UCS2xy(uvMatrix)

Arguments

Value

CIE 1960 xy coordinates

Author(s)

Jose Gama

Source

Wikipedia, 2014 CIE 1964 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

References

Wikipedia, 2014 CIE 1931 color space https://en.wikipedia.org/wiki/CIE_1931_color_space#CIE_xy_chromaticity_diagram_and_the_CIE_xyY_color_space

Examples

CIE1960UCS2xy(c(0.1633789, 1.322222 ))

Description

CIE1976chroma CIE 1976 chroma formula for CIELab and CIELuv.

Usage

CIE1976chroma(CIELMatrix)

Arguments

Author(s)

Jose Gama

Source

R. W. G. Hunt, M. R. Pointer, 2011 Measuring Colour Volume 23 of The Wiley-IS&T Series in Imaging Science and Technology John Wiley & Sons

References

R. W. G. Hunt, M. R. Pointer, 2011 Measuring Colour Volume 23 of The Wiley-IS&T Series in Imaging Science and Technology John Wiley & Sons

Examples

CIELMatrix<-c(34.78467, 28.15159, 3.024663)
CIE1976chroma(CIELMatrix)

Description

CIE1976hueangle CIE 1976 hue angle formula for CIELab and CIELuv.

Usage

CIE1976hueangle(CIELMatrix)

Arguments

Author(s)

Jose Gama

Source

R. W. G. Hunt, M. R. Pointer, 2011 Measuring Colour Volume 23 of The Wiley-IS&T Series in Imaging Science and Technology John Wiley & Sons

References

R. W. G. Hunt, M. R. Pointer, 2011 Measuring Colour Volume 23 of The Wiley-IS&T Series in Imaging Science and Technology John Wiley & Sons

Examples

CIELMatrix<-c(34.78467, 28.15159, 3.024663)
CIE1976hueangle(CIELMatrix)

Description

CIE1976uv2CIE1931xy CIE-1976 u'v' to CIE-1931 xy.

Usage

CIE1976uv2CIE1931xy(uvmatrix)

Arguments

Author(s)

Jose Gama

Source

Paul Schils, 2014 Color theory phenomena http://www.color-theory-phenomena.nl/10.03.htm

References

Paul Schils, 2014 Color theory phenomena http://www.color-theory-phenomena.nl/10.03.htm

Examples

CIE1976uv2CIE1931xy(c(0.2830965, 0.4661789))

Description

CIE1976uv2CIE1960uv CIE-1976 u'v' to CIE-1960 uv.

Usage

CIE1976uv2CIE1960uv(uvmatrix)

Arguments

Author(s)

Jose Gama

Source

Paul Schils, 2014 Color theory phenomena http://www.color-theory-phenomena.nl/10.03.htm

References

Paul Schils, 2014 Color theory phenomena http://www.color-theory-phenomena.nl/10.03.htm

Examples

CIE1976uv2CIE1960uv(c(0.2830965, 0.4661789))

Description

CIE1976uvSaturation CIE 1976 uv Saturation.

Usage

CIE1976uvSaturation(uvMatrix, whitepoint)

Arguments

Author(s)

Jose Gama

Source

R. W. G. Hunt, M. R. Pointer, 2011 Measuring Colour Volume 23 of The Wiley-IS&T Series in Imaging Science and Technology John Wiley & Sons

References

R. W. G. Hunt, M. R. Pointer, 2011 Measuring Colour Volume 23 of The Wiley-IS&T Series in Imaging Science and Technology John Wiley & Sons

Examples

CIE1976uvSaturation(cbind(34.78467, 28.15159, 3.024663), as.numeric(
get("XYZperfectreflectingdiffuser", 
envir = environment())[which(get("XYZperfectreflectingdiffuser", 
envir = environment())[["Illuminant"]]=='C'),c('X2','Y2')]))

Description

CIELabtoDIN99 Converts from CIELAB color space to DIN99 coordinates.

Usage

CIELabtoDIN99(Lab)

Arguments

Value

DIN99

Author(s)

Jose Gama

Source

CIELAB to DIN99 coordinates, 2014 https://de.wikipedia.org/w/index.php?title=Diskussion:DIN99-Farbraum

References

CIELAB to DIN99 coordinates, 2014 https://de.wikipedia.org/w/index.php?title=Diskussion:DIN99-Farbraum

Examples

CIELabtoDIN99(c(0.310897, 0.306510, 74.613450))

Description

CIEluminanceY2NCSblackness approximated NCS blackness s by the CIE luminance factor Y.

Usage

CIEluminanceY2NCSblackness(Y)

Arguments

Author(s)

Jose Gama

Source

Hsien-Che Lee, 2005 Introduction to Color Imaging Science Cambridge University Press pp. 366

References

Hsien-Che Lee, 2005 Introduction to Color Imaging Science Cambridge University Press pp. 366

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
CIEluminanceY2NCSblackness(xyY[3])

Description

CIETint Tint indices: CIE Tint and ASTM E313 Tint.

Usage

CIETint(xymatrix,illuminant='D65',observer=2)

Arguments

Value

Tint

Author(s)

Jose Gama

Source

CIE, 2004 CIE Publication 15:2004, "Colorimetry" ASTM E313, "Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates"

References

CIE, 2004 CIE Publication 15:2004, "Colorimetry" ASTM E313, "Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates"

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
CIETint(xyY)

Description

ciexyz31 is a table with CIE 1931 2-deg, XYZ color matching functions.

Usage

ciexyz31

Format

This data frame contains the following data:

wlnm

wavelength (nm)

xbar

x CMF

ybar

y CMF

zbar

z CMF

Author(s)

Jose Gama

Source

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

References

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

Examples

data(ciexyz31)
ciexyz31

Description

ciexyz64 is a table with CIE 1964 10-deg, XYZ color matching functions.

Usage

ciexyz64

Format

This data frame contains the following data:

wlnm

wavelength (nm)

xbar

x CMF

ybar

y CMF

zbar

z CMF

Author(s)

Jose Gama

Source

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

References

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

Examples

data(ciexyz64)
ciexyz64

Description

CMY2CMYK Converts CMY coordinates to CMYK.

Usage

CMY2CMYK(CMYmatrix)

Arguments

Value

CMYK coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

CMY2CMYK(c(0.59072, 0.85570, 0.80283))

Description

CMY2RGB Converts CMYK coordinates to RGB.

Usage

CMY2RGB(CMYmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

CMY2RGB(c(0.310897, 0.306510, 74.613450))

Description

CMYK2CMY Converts CMYK coordinates to CMY.

Usage

CMYK2CMY(CMYKmatrix)

Arguments

Value

CMY coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

CMYK2CMY(c(.342, .768, .683, .378))

Description

ColorBlockFromMunsell Get HVC, ISCC-NBS Number and ISCC-NBS Name from Munsell notation.

Usage

ColorBlockFromMunsell(HVC)

Arguments

Format

HVC[1]

Munsell hue, on the ASTM D1535 100 point circular scale. All values are valid.

HVC[2]

Munsell value, must be between 0 and 10

HVC[3]

Munsell chroma, must be non-negative

Value

HVC, ISCC-NBS Number, ISCC-NBS Name

Author(s)

Glenn Davis

Description

compuphaseDifferenceRGB compuphase Difference RGB.

Usage

compuphaseDifferenceRGB(RGB1, RGB2)

Arguments

Value

Delta E

Author(s)

Jose Gama

Source

Thiadmer Riemersma, 2012 CompuPhase https://www.compuphase.com/cmetric.htm

References

Thiadmer Riemersma, 2012 CompuPhase https://www.compuphase.com/cmetric.htm

Examples

compuphaseDifferenceRGB(c(124,63,78),c(241,65,78))

Description

conversionIlluminance is a table of conversion factors for units of Illuminance

Usage

conversionIlluminance

Format

This data frame contains the following columns:

footcandles

foot-candles

lux

lm/m2 = lux

phot

phot

milliphot

milliphot

units

units

Author(s)

Jose Gama

Source

J. Meyer-Arendt, "Radiometry and Photometry: Units and Conversion Factors," Appl. Opt. 7, 2081-2081 (1968).

References

J. Meyer-Arendt, "Radiometry and Photometry: Units and Conversion Factors," Appl. Opt. 7, 2081-2081 (1968).

Examples

data(conversionIlluminance)
conversionIlluminance

Description

conversionLuminance is a table of conversion factors for units of Luminance

Usage

conversionLuminance

Format

This data frame contains the following columns:

cd.m.2

cd/m^2 = nit

cd.cm.2

cd/cm^2 = stilb

cd.ft.2

cd/ft^2

cd.in.2

cd/in^2

apostilb

apostilb = blondel

millilambert

millilambert

footlambert

foot-lambert

Author(s)

Jose Gama

Source

J. Meyer-Arendt, "Radiometry and Photometry: Units and Conversion Factors," Appl. Opt. 7, 2081-2081 (1968).

References

J. Meyer-Arendt, "Radiometry and Photometry: Units and Conversion Factors," Appl. Opt. 7, 2081-2081 (1968).

Examples

data(conversionLuminance)
conversionLuminance

Description

createIsoTempLinesTable table of isotemperature lines for use with the Robertson Method (Robertson, 1968) to interpolate isotemperature lines from the CIE 1960 UCS.

Usage

createIsoTempLinesTable(SPD=NA,CIETable = get("ciexyz31", envir = environment()), 
TCS = get("TCSdata", envir = environment()))

Arguments

Value

Iso temperature lines table

Author(s)

Jose Gama

Source

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

References

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

Examples

# illuminant A
SPD = illuminants[1:51*2-1,c('wlnm','A')] # every 10 nm
isoTempLinesTable <- createIsoTempLinesTable(SPD)

Description

daylightcomponents table with the mean relative spectral radiant power distribution and first two eigenvectors for the CIE method of calculating daylight.

Format

This data frame contains the following columns:

wlnm

wavelength in nm

S0

mean relative spectral radiant power distribution

S1

first eigenvector

S2

second eigenvector

Author(s)

Jose Gama

Source

Wyszecki, G. and Stiles, W.S., 1982 Color Science: Concepts and Methods, Quantitative data and formulae. John Wiley & Sons.

References

Wyszecki, G. and Stiles, W.S., 1982 Color Science: Concepts and Methods, Quantitative data and formulae. John Wiley & Sons.

Examples

data(daylightcomponents)
str(daylightcomponents)

Description

deltaE1976 The color difference Delta E (CIE 1976).

Usage

deltaE1976(Lab1, Lab2)

Arguments

Value

Delta E

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

Examples

RGB1<-c(124,63,78)
RGB2<-c(95,213,184)
deltaE1976(RGB1,RGB2)

Description

deltaE1994 The color difference Delta E (CIE 1994).

Usage

deltaE1994(Lab1, Lab2, textiles = FALSE)

Arguments

Value

Delta E

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

Examples

RGB1<-c(124,63,78)
RGB2<-c(95,213,184)
deltaE1994(RGB1,RGB2)

Description

deltaE2000 The color difference Delta E (CIE 2000).

Usage

deltaE2000(Lab1, Lab2)

Arguments

Value

Delta E

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

Examples

RGB1<-c(124,63,78)
RGB2<-c(95,213,184)
deltaE2000(RGB1,RGB2)

Description

deltaECMC The color difference method of the Color Measurement Committee (the CMC) .

Usage

deltaECMC(Lab1, Lab2, L, C)

Arguments

Value

Delta E

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

Examples

RGB1<-c(124,63,78)
RGB2<-c(95,213,184)
deltaECMC(RGB1,RGB2)

Description

DeMarcoPokornySmith2degConeFundamentals1992 DeMarco, Pokorny & Smith (1992) versions of the Smith-Pokorny 2-deg fundamentals based on the CIE Judd-Vos 2-deg CMFs.

Usage

DeMarcoPokornySmith2degConeFundamentals1992

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(DeMarcoPokornySmith2degConeFundamentals1992)
DeMarcoPokornySmith2degConeFundamentals1992

Description

DIN6167.YellownessIndex The CIE Whiteness index is widely used in the industry for D65 for 2 or 10 deg observer.

Usage

DIN6167.YellownessIndex(XYZmatrix, illuminant = "C", observer = 2, RefWhite
                 = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Author(s)

Jose Gama

Source

Scandinavian Pulp, paper and board, 2003 Basic equations for optical properties SCAN-G 5:03 Revised 2003

References

Scandinavian Pulp, paper and board, 2003 Basic equations for optical properties SCAN-G 5:03 Revised 2003

Examples

XYZ<-c(0.11465380, 0.08391198, 0.08222077)
DIN6167.YellownessIndex(XYZ)

Description

DIN99toCIELab Conversion from DIN99 coordinates to CIELAB color space.

Usage

DIN99toCIELab(Lab99o)

Arguments

Value

CIELAB coordinates

Author(s)

Jose Gama

Source

DIN99 coordinates to CIELAB color space https://de.wikipedia.org/w/index.php?title=Diskussion:DIN99-Farbraum

References

DIN99 coordinates to CIELAB color space https://de.wikipedia.org/w/index.php?title=Diskussion:DIN99-Farbraum

Examples

DIN99toCIELab(c(0.59072, 0.85570, 0.80283))

Description

dkl2dklCart Converts DKL, from spherical coordinates to cartesian. dklCart2rgb Converts DKL, from cartesian to spherical coordinates.

Usage

dkl2dklCart(dklMatrix)

Arguments

Value

DKL coordinates

Author(s)

Jose Gama

Source

Package psychopy for Python

Graph-Based Visual Saliency (MATLAB source code) Jonathan Harel California Institute of Technology

References

Package psychopy for Python

Graph-Based Visual Saliency (MATLAB source code) Jonathan Harel California Institute of Technology

Examples

RGB<-c(124,63,78)
d <- rgb2dklCart(RGB)
dklCart2dkl(d)
dkl2dklCart(c(1.647176, 60.8308, 91.45825))
d

Description

dkl2rgb Converts DKL, spherical coords coordinates to sRGB. dklCart2rgb Converts DKL, cartesian coords coordinates to sRGB.

Usage

dkl2rgb(dklMatrix, conversionMatrix = NA)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Package psychopy for Python

Graph-Based Visual Saliency (MATLAB source code) Jonathan Harel California Institute of Technology

References

Package psychopy for Python

Graph-Based Visual Saliency (MATLAB source code) Jonathan Harel California Institute of Technology

Examples

dklC <- rgb2dklCart(c(54,75,121))
dklCart2dkl(dklC)

Description

DominantWavelength Converts xyY coordinates to wavelength.

Usage

DominantWavelength(xyYmatrix, illuminant='D65',observer=2,
RefWhiteIllum=get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

Dominant Wavelength

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 http://www.brucelindbloom.com/index.html?ColorCalculator.html

References

Bruce Justin Lindbloom, 2013 http://www.brucelindbloom.com/index.html?ColorCalculator.html

Examples

DominantWavelength(c(0.59072, 0.85570, 0.80283))

Description

emittanceblackbodyPlanck emittance of a black body of temperature T at a given wavelength (in metres).

Usage

emittanceblackbodyPlanck(wlnm, T)

Arguments

Value

emittance

Author(s)

Jose Gama

Source

Planck's radiation law https://en.wikipedia.org/wiki/Planck%27s_law

References

Planck's radiation law https://en.wikipedia.org/wiki/Planck%27s_law

Examples

emittanceblackbodyPlanck(555,2000)

Description

footcandle2candela.steradian.sqmeter converts foot candle to candela steradian / square meter [cd*sr/m^2].

Usage

footcandle2candela.steradian.sqmeter(ftcl)

Arguments

Value

watts / square centimeter

Author(s)

Jose Gama

Source

Translators cafe https://www.translatorscafe.com/unit-converter/en-US/illumination

References

Translators cafe https://www.translatorscafe.com/unit-converter/en-US/illumination

Examples

footcandle2candela.steradian.sqmeter(5)

Description

footcandle2lux converts foot candle to Lumens/lux.

Usage

footcandle2lux(ftcl)

Arguments

Value

Lumens/lux

Author(s)

Jose Gama

Source

Translators cafe https://www.translatorscafe.com/unit-converter/en-US/illumination

References

Translators cafe https://www.translatorscafe.com/unit-converter/en-US/illumination

Examples

footcandle2lux(5)

Description

footcandle2watt.sqcentimeter converts foot candle to watts / square centimeter [w/cm^2] (at 555 nm) .

Usage

footcandle2watt.sqcentimeter(ftcl)

Arguments

Value

watts / square centimeter

Author(s)

Jose Gama

Source

Translators cafe https://www.translatorscafe.com/unit-converter/en-US/illumination

References

Translators cafe https://www.translatorscafe.com/unit-converter/en-US/illumination

Examples

footcandle2watt.sqcentimeter(5)

Description

GanzGrieser.Tint Ganz Grieser Tint Method.

Usage

GanzGrieser.Tint(xyYmatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
GanzGrieser.Tint(xyY)

Description

GanzGrieser.Whiteness Dr. E. Ganz (formerly employee of Ciba AG, Switzerland) and Mr.R. Griesser (formerly employee of J.R.Geigy) developed the Ganz Grieser Whiteness Method.

Usage

GanzGrieser.Whiteness(xyYmatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
GanzGrieser.Whiteness(xyY)

Description

heuristic.wlnm2RGB Approximations from wavelengths to RGB.

Usage

heuristic.wlnm2RGB(wavelength, Gamma = 0.8, IntensityMax = 1)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Dan Bruton's, 2004 http://www.midnightkite.com/color.html Earl F. Glynn 2006 Delphi conversion http://www.efg2.com/Lab/ScienceAndEngineering/Spectra.htm

References

Dan Bruton's, 2004 http://www.midnightkite.com/color.html Earl F. Glynn 2006 Delphi conversion http://www.efg2.com/Lab/ScienceAndEngineering/Spectra.htm

Examples

heuristic.wlnm2RGB(555)

Description

HSL2RGB Converts HSL coordinates to RGB.

Usage

HSL2RGB(HSLmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

HSL<-c(0.9590164, 0.3262032, 0.3666667)
HSL2RGB(HSL)
HSL2RGB(rbind(HSL,HSL,HSL,HSL,HSL))

Description

HSV2RGB Converts HSV coordinates to RGB.

Usage

HSV2RGB(HSVmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

HSV<-c(0.9590164, 0.4919355, 0.4862745)
HSV2RGB(HSV)

Description

Hue.2.RGB Converts Hue to RGB for HSL conversion.

Usage

Hue.2.RGB(v1, v2, vH)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

References

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

Examples

Hue.2.RGB(1,2,3)

Description

huedegree convert Munsell hue to degree.

Usage

huedegree(MunIn)

Arguments

Value

Munsell hue degree

Author(s)

Jose Gama

Source

Takahiro Onodera, 2010 Color-Model-Munsell-Util http://annocpan.org/dist/Color-Model-Munsell-Util

References

Takahiro Onodera, 2010 Color-Model-Munsell-Util http://annocpan.org/dist/Color-Model-Munsell-Util

Examples

huedegree('1P')

Description

huedegreemunsell table with Munsell hue degrees.

Usage

huedegreemunsell

Format

This data frame contains the following columns:

HueDegree

hue degree

HueMunsell

hue in Munsell H

Author(s)

Jose Gama

Source

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

References

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

Examples

data(huedegreemunsell)
huedegreemunsell

Description

Hunter60.WhitenessIndex Hunter 60 Whiteness Index.

Usage

Hunter60.WhitenessIndex(LabHunterMatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

HunterLab<-c(28.96756, 2.363884, 0.4821515)
Hunter60.WhitenessIndex(HunterLab)

Description

HunterLab2XYZ Converts HunterLab coordinates to XYZ.

Usage

HunterLab2XYZ(HunterLabmatrix, illuminant = "D65", observer = 2,
                 RefWhite = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

HunterLab2XYZ(c(0.310897, 0.306510, 74.613450))

Description

illuminantA is a table with Relative spectral power distributions of CIE illuminant A at 1 nm interval.

Usage

illuminantA

Format

This data frame contains the following data:

wlnm

wavelength (nm)

intensity

Relative spectral power

Author(s)

Jose Gama

Source

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

References

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

Examples

data(illuminantA)
illuminantA

Description

illuminantD65 is a table with Relative spectral power distributions of CIE illuminant D65 at 1 nm interval.

Usage

illuminantD65

Format

This data frame contains the following data:

wlnm

wavelength (nm)

intensity

Relative spectral power

Author(s)

Jose Gama

Source

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

References

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

Examples

data(illuminantD65)
illuminantD65

Description

illuminants is a table with Relative spectral power distributions of CIE illuminants at 5 nm interval.

Usage

illuminants

Format

This data frame contains the following data:

wlnm

wavelength (nm)

A

illuminant A

B

illuminant B

C

illuminant C

D50

illuminant D50

D55

illuminant D55

D65

illuminant D65

D75

illuminant D75

D93

illuminant D93

E

illuminant E

Natural

illuminant Natural

PlusWhite

illuminant PlusWhite

TL84

illuminant TL84

Polylux3000

illuminant Polylux3000

Polylux4000

illuminant Polylux4000

KolorRite

illuminant KolorRite

FL1

illuminant FL1

FL2

illuminant FL2

FL3

illuminant FL3

FL4

illuminant FL4

FL5

illuminant FL5

FL6

illuminant FL6

FL7

illuminant FL7

FL8

illuminant FL8

FL9

illuminant FL9

FL10

illuminant FL10

FL11

illuminant FL11

FL12

illuminant FL12

Author(s)

Jose Gama

Source

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

References

Wyszecki, G., & Stiles, W. S., 1982 Color Science: concepts and methods, quantitative data and formulae (2nd ed.). New York: Wiley.

Examples

data(illuminants)
illuminants

Description

ISObrightnessReflectometerRSD is a table with the weighting factors for the calculation of ISO brightness.

Usage

ISObrightnessReflectometerRSD

Format

This data frame contains the following data:

wln

wavelength

F

factor

weights

weight

Author(s)

Jose Gama

Source

Scandinavian Pulp, paper and board, 2003 Basic equations for optical properties SCAN-G 5:03 Revised 2003

References

Scandinavian Pulp, paper and board, 2003 Basic equations for optical properties SCAN-G 5:03 Revised 2003

Examples

data(ISObrightnessReflectometerRSD)
ISObrightnessReflectometerRSD

Description

kelvin2xy Blackbody radiator color temperature to CIE 1931 x,y chromaticity approximation function.

Usage

kelvin2xy(T)

Arguments

Value

color temperature

Author(s)

Jose Gama

Source

Kim et al., 2002 "Design of Advanced Color - Temperature Control System for HDTV Applications" https://www.jkps.or.kr/journal/view.html?uid=5163&vmd=Full

References

Kim et al., 2002 "Design of Advanced Color - Temperature Control System for HDTV Applications" https://www.jkps.or.kr/journal/view.html?uid=5163&vmd=Full

Examples

kelvin2xy(300)

Description

Lab2LCHab Converts CIE Lab coordinates to LCHab.

Usage

Lab2LCHab(LabMatrix)

Arguments

Value

LCHab coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

Lab2LCHab(c(0.310897, 0.306510, 74.613450))

Description

LAB2LUV Converts CIE Lab coordinates to CIE Luv.

Usage

LAB2LUV(Labmatrix)

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Examples

LAB2LUV(c(0.310897, 0.306510, 74.613450))

Description

Lab2XYZ Converts CIE Lab coordinates to XYZ.

Usage

Lab2XYZ(Labmatrix, illuminant = "D65", observer = 2, RefWhite
                 = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

Lab2XYZ(c(0.310897, 0.306510, 74.613450))

Description

LCHab2Lab Converts LCHab coordinates to CIE Lab.

Usage

LCHab2Lab(LCHabmatrix)

Arguments

Value

CIE Lab coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

LCHab2Lab(c(0.310897, 0.306510, 74.613450))

Description

LCHuv2Luv Converts LCHuv coordinates to CIE Luv.

Usage

LCHuv2Luv(LCHuvmatrix)

Arguments

Value

CIE Luv coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

LCHuv2Luv(c(0.310897, 0.306510, 74.613450))

Description

LEF2RGB Converts LEF coordinates to RGB.

Usage

LEF2RGB(LEFmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Kang, Henry R, 2006 Computational color technology Spie Press Bellingham

References

Kang, Henry R, 2006 Computational color technology Spie Press Bellingham

Examples

LEF<-c(176.66667, 53.50000, -12.99038)
LEF2RGB(LEF)

Description

LMS2DKL Converts LMS coordinates to DKL.

Usage

LMS2DKL(bg, diffcone.coords, DKL2LMS = FALSE)

Arguments

Value

DKL coordinates

Author(s)

Jose Gama

Source

David H. Brainard Cone Contrast and Opponent Modulation Color Spaces pp. 563 PART IV: CONE CONTRAST AND OPPONENT MODULATION COLOR SPACES

References

David H. Brainard Cone Contrast and Opponent Modulation Color Spaces pp. 563 PART IV: CONE CONTRAST AND OPPONENT MODULATION COLOR SPACES

Examples

#LMS<-c(3.822394, 10.17498, 1.130049)
#LMS2DKL(LMS)

Description

LMS2RGB Converts LMS coordinates to RGB.

Usage

LMS2RGB(LMSmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

References

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

Examples

LMS<-c(3.822394, 10.17498, 1.130049)
LMS2RGB(LMS)

Description

LMS2XYZ Converts LMS coordinates to XYZ.

Usage

LMS2XYZ(LMSmatrix)

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Source

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

References

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

Examples

LMS<-c(3.822394, 10.17498, 1.130049)
LMS2XYZ(LMS)

Description

LSLM2RGB Converts LSLM coordinates to RGB.

Usage

LSLM2RGB(LSLMmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

References

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

Examples

LSLM<-c(-0.4186083, 0.007563981, 0.4918533)
LSLM2RGB(LSLM)

Description

LUV2LAB Converts CIE Luv coordinates to CIE Lab.

Usage

LUV2LAB(Luvmatrix)

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Examples

LUV2LAB(c(0.310897, 0.306510, 74.613450))

Description

Luv2LCHuv Converts CIE Luv coordinates to LCHuv.

Usage

Luv2LCHuv(LuvMatrix)

Arguments

Value

LCHuv coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

Luv2LCHuv(c(0.310897, 0.306510, 74.613450))

Description

Luv2XYZ Converts CIE Luv coordinates to XYZ.

Usage

Luv2XYZ(Luvmatrix, illuminant = "D65", observer = 2, RefWhite
                 = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

Luv2XYZ(c(0.310897, 0.306510, 74.613450))

Description

Luv2Yuv Converts CIE Luv coordinates to Yuv.

Usage

Luv2Yuv(Luvmatrix,illuminant='D65',observer=2,RefWhite=
get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

Yuv coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

Luv2Yuv(c(0.310897, 0.306510, 74.613450))

Description

makeChromaticAdaptationMatrix Generates a Chromatic Adaptation matrix.

Usage

makeChromaticAdaptationMatrix(ChromaticAdaptationAlgorithm = "VonKries",
                 illuminantSource = "C", illuminantDestination = "D65",
                 observer = 2, ChromaticAdaptationArray =
                 get("ChromaticAdaptation", envir = environment()), 
  referenceWhiteArray = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

Chromatic Adaptation matrix

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Description

MaterialReferenceData Material Reference Data from Principles of Digital Image Synthesis, Appendix G Andrew S. Glassner 16 August 1994.

Usage

MaterialReferenceData

Format

This data frame contains the following data:

wavelength

wavelength (nm)

DarkSkin

spectra of: dark skin

LightSkin

spectra of: light skin

BlueSky

spectra of: blue sky

Foliage

spectra of: foliage

BlueFlower

spectra of: blue flower

BluishGreen

spectra of: bluish green

Orange

spectra of: orange

PurplishBlue

spectra of: purplish blue

ModerateRed

spectra of: moderate red

Purple

spectra of: purple

YellowGreen

spectra of: yellow green

OrangeYellow

spectra of: orange yellow

Blue

spectra of: blue

Green

spectra of: green

Red

spectra of: red

Yellow

spectra of: yellow

Magenta

spectra of: magenta

Cyan

spectra of: cyan

White

spectra of: white

Neutral

spectra of: neutral

Neutral6.5

spectra of: neutral 6.5

Neutral5

spectra of: neutral 5

Neutral3.5

spectra of: neutral 3.5

Black

spectra of: black

PineNeedles

spectra of: pine needles

SilverMapleLeaf

spectra of: silver maple leaf

DarkGreenMapleLeaf

spectra of: dark green maple leaf

RedMapleLeaf

spectra of: red maple leaf

Grass

spectra of: grass

Soil

spectra of: soil

VineLeaf

spectra of: vine leaf

Alphalt

spectra of: alphalt

DaisyWhitePetals

spectra of: daisy white petals

DaisyYellowCenter

spectra of: daisy yellow center

MarigoldOrange

spectra of: marigold orange

MarigoldYellow

spectra of: marigold yellow

DarkBlueJeans

spectra of: dark blue jeans

FadedJeans

spectra of: faded jeans

DarkBlueSweatPants

spectra of: dark blue sweat pants

Denim

spectra of: denim

WheatBread

spectra of: wheat bread

WheatBreadCrust

spectra of: wheat bread crust

Pancake

spectra of: pancake

SwissArmyKnife

spectra of: swiss army knife

PineWood

spectra of: pine wood

MapleWood

spectra of: maple wood

OakWood

spectra of: oak wood

Bamboo

spectra of: bamboo

Redwood

spectra of: redwood

WalnutWood

spectra of: walnut wood

YellowBanana

spectra of: yellow banana

RipeBrownBanana

spectra of: ripe brown banana

Cucumber

spectra of: cucumber

CornKernel

spectra of: corn kernel

CornHusk

spectra of: corn husk

YellowDeliciousApple

spectra of: yellow delicious apple

GreenPepper

spectra of: green pepper

LemonSkin

spectra of: lemon skin

Lettuce

spectra of: lettuce

Carrot

spectra of: carrot

BarleySeeds

spectra of: barley seeds

LentilSeeds

spectra of: lentil seeds

BrownRiceSeeds

spectra of: brown rice seeds

Sand

spectra of: sand

Author(s)

Jose Gama

Source

Andrew S. Glassner, 1995 Principles of Digital Image Synthesis The Morgan Kaufmann Series in Computer Graphics and Geometric Modeling

References

Andrew S. Glassner, 1995 Principles of Digital Image Synthesis The Morgan Kaufmann Series in Computer Graphics and Geometric Modeling

Examples

data(MaterialReferenceData)
str(MaterialReferenceData)

Description

MaxChromaFromExtrapRenotationData table with maximum chroma for which extrapolated renotation data is available.

Usage

MaxChromaFromExtrapRenotationData

Format

This data frame contains the following columns:

H

Hue

V

Value

MaximumChroma

Maximum Chroma

Author(s)

Jose Gama

Source

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

References

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

Examples

data(MaxChromaFromExtrapRenotationData)
MaxChromaFromExtrapRenotationData

Description

MaxChromasForStandardMunsellHuesAndValues table with maximum Munsell chroma, for a given Munsell hue and value, for which an extrapolated renotation value is available.

Usage

MaxChromasForStandardMunsellHuesAndValues

Format

This data frame contains the following columns:

H

Hue

V

Value

MaximumChroma

Maximum Chroma (MacAdam limit)

Author(s)

Jose Gama

Source

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

References

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

Examples

data(MaxChromasForStandardMunsellHuesAndValues)
MaxChromasForStandardMunsellHuesAndValues

Description

Maxwell.triangle Plots the Maxwell triangle, as a black line, a color line or a polygon.

Usage

Maxwell.triangle(primariesRGB=get("whitepointsRGB", envir = environment()), 
conversionFunction=NULL,...)

Arguments

Value

none

Author(s)

Jose Gama

Examples

Maxwell.triangle()
xl<-yl<-0:1
Maxwell.triangle(xlim=xl,ylim=yl)
Maxwell.triangle(conversionFunction=CIE1931XYZ2CIE1976uv, 
xlim=xl,ylim=yl,xlab="u'",ylab="v'")

Description

Munsell100hues55 Chromaticity diagram showing Tristimulus Values and Trilinear Coordinates for Illuminant A for 100 hues at 5/5.

Usage

Munsell100hues55

Format

This data frame contains the following columns:

BookNotation

Munsell color notation from the Munsell book

MunsellProductionNo

X

Tristimulus Value X

Y

Tristimulus Value Y

Z

Tristimulus Value Z

x

Trilinear Coordinate x

y

Trilinear Coordinate y

z

Trilinear Coordinate z

Author(s)

Jose Gama

Source

Hermann VON Schelling, Dean Farnsworth, 1949 Trichromatic Specifications of the Munsell 100 Hues at 5/5 for Illuminant a Defense Technical Information Center NAVAL MEDICAL RESEARCH LAB NEW LONDON CONN.

References

Hermann VON Schelling, Dean Farnsworth, 1949 Trichromatic Specifications of the Munsell 100 Hues at 5/5 for Illuminant a Defense Technical Information Center NAVAL MEDICAL RESEARCH LAB NEW LONDON CONN.

Examples

data(Munsell100hues55)
Munsell100hues55

Description

Munsell100hues55FM100 Munsell 100-Hues at 5/5, production numbers 101 to 200 and Farnsworth-Munsell 100 Hue test.

Usage

Munsell100hues55FM100

Format

This data frame contains the following columns:

FMtest

Farnsworth-Munsell 100 Hue test value

MunsellNumber

Munsell 100-Hues at 5/5, production number

Author(s)

Jose Gama

Source

Hermann VON Schelling, Dean Farnsworth, 1949 Trichromatic Specifications of the Munsell 100 Hues at 5/5 for Illuminant a Defense Technical Information Center NAVAL MEDICAL RESEARCH LAB NEW LONDON CONN.

References

Hermann VON Schelling, Dean Farnsworth, 1949 Trichromatic Specifications of the Munsell 100 Hues at 5/5 for Illuminant a Defense Technical Information Center NAVAL MEDICAL RESEARCH LAB NEW LONDON CONN.

Examples

data(Munsell100hues55FM100)
Munsell100hues55FM100

Description

MunsellHues table with Munsell Hues.

Usage

MunsellHues

Author(s)

Jose Gama

Source

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

References

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

Examples

data(MunsellHues)
MunsellHues

Description

MunsellNeutrals2sRGB table with Munsell Neutrals and corresponding sRGB.

Usage

MunsellNeutrals2sRGB

Format

This data frame contains the following columns:

MunsellNeutral

Munsell N

R

sRGB R

G

sRGB G

B

sRGB B

Author(s)

Jose Gama

Source

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

References

Paul Centore 2014 The Munsell and Kubelka-Munk Toolbox https://www.munsellcolourscienceforpainters.com/MunsellAndKubelkaMunkToolbox/MunsellAndKubelkaMunkToolbox.html

James D. Foley, Andries van Dam, Steven K. Feiner, & John F. Hughes, 1990 Computer Graphics: Principles and Practice, 2nd ed., Addison-Wesley Publishing Company.

Gunter Wyszecki & W. S. Stiles, 1982 Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd edition, John Wiley and Sons

Examples

data(MunsellNeutrals2sRGB)
MunsellNeutrals2sRGB

Description

MunsellSpecToHVC Converts convert Munsell notation to numeric Hue,Value,Chroma.

Usage

MunsellSpecToHVC(MunsellSpecString)

Arguments

Value

numeric Hue,Value,Chroma

Author(s)

Glenn Davis

Description

MunsellSpectral table for 1250 matt Munsell color chips with Munsell notation values, XYZ, xyY, RGB, CIE Lab, CIE Luv and spectral data.

Usage

MunsellSpectral

Author(s)

Jose Gama

Source

Spectral Color Research group, 1989 University of Kuopio, Finland School of Computing and the Department of Physics and Mathematics Database - Munsell Colors Matt (AOTF) https://sites.uef.fi/spectral/databases-software/munsell-colors-matt-aotf-measured/

Parkkinen, J. P. S., Hallikainen, J. and Jaaskelainen, 1989 "Characteristic spectra of Munsell colors," Journal of the Optical Society of America Vol. 6, No. 2, February 1989, pp. 318-322.

References

Spectral Color Research group, 1989 University of Kuopio, Finland School of Computing and the Department of Physics and Mathematics Database - Munsell Colors Matt (AOTF) https://sites.uef.fi/spectral/databases-software/munsell-colors-matt-aotf-measured/

Parkkinen, J. P. S., Hallikainen, J. and Jaaskelainen, 1989 "Characteristic spectra of Munsell colors," Journal of the Optical Society of America Vol. 6, No. 2, February 1989, pp. 318-322.

Examples

## Not run: 
data(MunsellSpectral)
MunsellSpectral

## End(Not run)

Description

MunsellV2relativeLuminanceY Munsell value V to relative luminance Y.

Usage

MunsellV2relativeLuminanceY(V)

Arguments

Value

CIE XYZ "Y"

Author(s)

Jose Gama

Source

Mark D. Fairchild, 2013 Color Appearance Models, 3rd Ed. Wiley-IS&T

References

Mark D. Fairchild, 2013 Color Appearance Models, 3rd Ed. Wiley-IS&T

Examples

MunsellV2relativeLuminanceY(5)

Description

MunsellV2Y Munsell value to CIE XYZ "Y" .

Usage

MunsellV2Y(V)

Arguments

Value

CIE XYZ "Y"

Author(s)

Jose Gama

Source

ASTM, 2008 ASTM Standard D1535-08

References

ASTM, 2008 ASTM Standard D1535-08

Examples

MunsellV2Y(5)

Description

NickersonColorDifference Nickerson's Color Difference.

Usage

NickersonColorDifference(MunsellHVC1, MunsellHVC2)

Arguments

Value

Delta E

Author(s)

Jose Gama

Source

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

References

Bruce Justin Lindbloom, 2013 Color Calculator http://www.brucelindbloom.com

Examples

NickersonColorDifference('10B 5/6','5B 5/4')

Description

PhotoYCC2RGB Converts PhotoYCC to RGB.

Usage

PhotoYCC2RGB(PhotoYCCmatrix)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

References

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

Examples

p <- c(0.4560569, 155.9415709, 137.3026467)
PhotoYCC2RGB(p)

Description

PreucilAngle Preucil Angle.

Usage

PreucilAngle(RGBmatrix)

Arguments

Value

Angle

Author(s)

Jose Gama

Source

Robert William Gainer Hunt, 1987 The Reproduction of Colour Fountain Press Edition 4, illustrated

References

Robert William Gainer Hunt, 1987 The Reproduction of Colour Fountain Press Edition 4, illustrated

Examples

PreucilAngle(c(24,72,44))

Description

PreucilPercentGreyness Preucil Percentage of Greyness.

Usage

PreucilPercentGreyness(RGBmatrix)

Arguments

Value

Percentage of Greyness

Author(s)

Jose Gama

Source

Robert William Gainer Hunt, 1987 The Reproduction of Colour Fountain Press Edition 4, illustrated

References

Robert William Gainer Hunt, 1987 The Reproduction of Colour Fountain Press Edition 4, illustrated

Examples

PreucilPercentGreyness(c(24,72,44))

Description

PreucilPercentHueError Preucil Percentage of Hue Error.

Usage

PreucilPercentHueError(RGBmatrix)

Arguments

Value

Percentage of HueError

Author(s)

Jose Gama

Source

Robert William Gainer Hunt, 1987 The Reproduction of Colour Fountain Press Edition 4, illustrated

References

Robert William Gainer Hunt, 1987 The Reproduction of Colour Fountain Press Edition 4, illustrated

Examples

PreucilPercentHueError(c(24,72,44))

Description

RGB2CMY Converts sRGB coordinates to CMY.

Usage

RGB2CMY(RGBmatrix)

Arguments

Value

CMY coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

RGB2CMY(c(0.310897, 0.306510, 74.613450))

Description

rgb2dklV Converts sRGB coordinates to DKL, spherical coords, sames as Graph-Based Visual Saliency. rgb2dklCart Converts sRGB coordinates to DKL, cartesian coords.

Usage

rgb2dklV(RGB)

Arguments

Value

DKL coordinates

Author(s)

Jose Gama

Source

Package psychopy for Python

Graph-Based Visual Saliency (MATLAB source code) Jonathan Harel California Institute of Technology

References

Package psychopy for Python

Graph-Based Visual Saliency (MATLAB source code) Jonathan Harel California Institute of Technology

Examples

rgb2dklCart(c(54,75,121))

Description

RGB2HSL Converts RGB coordinates to HSL.

Usage

RGB2HSL(RGBmatrix)

Arguments

Value

HSL coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

RGB<-c(124,63,78)
RGB2HSL(RGB)

Description

RGB2HSV Converts RGB coordinates to HSV.

Usage

RGB2HSV(RGBmatrix)

Arguments

Value

HSV coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

RGB<-c(124,63,78)
RGB2HSV(RGB)

Description

RGB2hue Converts sRGB coordinates to hue.

Usage

RGB2hue(RGBmatrix)

Arguments

Value

hue

Author(s)

Jose Gama

Examples

RGB2hue(c(0.310897, 0.306510, 74.613450))

Description

RGB2LEF Converts RGB coordinates to LEF.

Usage

RGB2LEF(RGBmatrix)

Arguments

Value

LEF coordinates

Author(s)

Jose Gama

Source

Kang, Henry R, 2006 Computational color technology Spie Press Bellingham

References

Kang, Henry R, 2006 Computational color technology Spie Press Bellingham

Examples

RGB<-c(124,63,78)
RGB2LEF(RGB)

Description

RGB2LMS Converts RGB coordinates to LMS.

Usage

RGB2LMS(RGBmatrix)

Arguments

Value

LMS coordinates

Author(s)

Jose Gama

Source

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

References

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

Examples

RGB<-c(124,63,78)
RGB2LMS(RGB)

Description

RGB2LSLM Converts RGB coordinates to LSLM.

Usage

RGB2LSLM(RGBmatrix)

Arguments

Value

LSLM coordinates

Author(s)

Jose Gama

Source

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

References

Francoise Vienot, Hans Brettel,John D. Mollon, 1999 Digital Video Colourmaps for Checking the Legibility of Displays by Dichromats Color Research & Application John Wiley & Sons, Inc.

Examples

RGB<-c(124,63,78)
RGB2LSLM(RGB)

Description

RGB2PhotoYCC Converts RGB coordinates to PhotoYCC.

Usage

RGB2PhotoYCC(RGBmatrix)

Arguments

Value

PhotoYCC coordinates

Author(s)

Jose Gama

Source

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

References

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

Examples

RGB<-c(124,63,78)
RGB2PhotoYCC(RGB)

Description

RGB2XYZ Converts sRGB coordinates to XYZ.

Usage

RGB2XYZ(RGBmatrix, illuminant = "D65", observer = 2, RefWhite
                 = get("XYZperfectreflectingdiffuser", envir = environment()),
                 RGBModel = "sRGB", RefWhiteRGB = get("whitepointsRGB",
                 envir =environment()), gamma = NA,
                 RefWhiteIllum = get("XYZperfectreflectingdiffuser",
                 envir = environment()), CAT = "Bradford",
                 CATarray = get("ChromaticAdaptation", envir = environment()))

Arguments

Value

CIE XYZ coordinates

Author(s)

Jose Gama

Source

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

References

Logicol S.r.l., 2014 EasyRGB color search engine http://www.easyrgb.com/

Examples

RGB2XYZ(c(0.310897, 0.306510, 74.613450))

Description

RGB2YCbCr Converts RGB coordinates to YCbCr.

Usage

RGB2YCbCr(RGBmatrix)

Arguments

Value

YCbCr coordinates

Author(s)

Jose Gama

Source

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

References

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

Examples

RGB<-c(124,63,78)
RGB2YCbCr(RGB)

Description

RGB2YIQ Converts RGB coordinates to YIQ.

Usage

RGB2YIQ(RGBmatrix)

Arguments

Value

YIQ coordinates

Author(s)

Jose Gama

Source

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

References

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

Examples

RGB<-c(124,63,78)
RGB2YIQ(RGB)

Description

RGB2YPbPr Converts RGB coordinates to YPbPr.

Usage

RGB2YPbPr(RGBmatrix)

Arguments

Value

YPbPr coordinates

Author(s)

Jose Gama

Source

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

References

Alex Izvorski, Copyright 2003-2005 (Portions Copyright 2001-2003 by Alfred Reibenschuh) Graphics/ColorObject version 0.5.0 https://www.poynton.ca/notes/colour_and_gamma/ColorFAQ.txt

Examples

RGB<-c(124,63,78)
RGB2YPbPr(RGB)

Description

RGB2YUV Converts RGB coordinates to YUV.

Usage

RGB2YUV(RGBmatrix)

Arguments

Value

YUV coordinates

Author(s)

Jose Gama

Examples

RGB<-c(124,63,78)
RGB2YUV(RGB)

Description

RxRyRz2XYZ convert from three filter measurements (reflectance factors) to XYZ.

Usage

RxRyRz2XYZ(RxRyRzmatrix=NA,illuminant='C', observer=2,
RefWhite=get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Value

CIE XYZ coordinates

Author(s)

Jose Gama

Examples

RxRyRz2XYZ(c(7.90393, 8.391198, 9.721126))

Description

saturationCIECAM02 saturation CIECAM 2002.

Usage

saturationCIECAM02(M, Q)

Arguments

Value

saturation

Author(s)

Jose Gama

Source

Color by Wikipedians http://www.easyrgb.com/

References

Color by Wikipedians http://www.easyrgb.com/

Description

saturationCIELABEvaLubbe CIELAB saturation (chroma normalized by lightness).

Usage

saturationCIELABEvaLubbe(L,a,b)

Arguments

Value

saturation

Author(s)

Jose Gama

Source

Color by Wikipedians http://www.easyrgb.com/

References

Color by Wikipedians http://www.easyrgb.com/

Examples

saturationCIELABEvaLubbe(34.78467, 28.15159, 3.024663)

Description

saturationCIELUV CIELUV/CIELAB saturation.

Usage

saturationCIELUV(u, v, un, vn)

Arguments

Value

saturation

Author(s)

Jose Gama

Source

Color by Wikipedians http://www.easyrgb.com/

References

Color by Wikipedians http://www.easyrgb.com/

Description

SmithPokorny2degConeFundamentals1975 Smith & Pokorny (1975) 2-deg cone fundamentals based on the CIE Judd-Vos 2-deg CMFs.

Usage

SmithPokorny2degConeFundamentals1975

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(SmithPokorny2degConeFundamentals1975)
SmithPokorny2degConeFundamentals1975

Description

spectra2CCT Correlated Color Temperature (CCT) from spectra.

Usage

spectra2CCT(SPD=NA, isoTempLinesTable=NA,
CIETable = get("ciexyz31", envir = environment()), TCS = get("TCSdata", 
envir = environment()))

Arguments

Value

Correlated Color Temperature (CCT)

Author(s)

Jose Gama

Source

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

References

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

Examples

# illuminant A
SPD = illuminants[1:51*2-1,c('wlnm','A')] # every 10 nm
CCT <- spectra2CCT(SPD)
CCT

Description

spectra2CRIGAIFSCI Color Rendering Index (CRI), Gamut Area Index (GAI) and full spectrum index (FSCI) from spectra.

Usage

spectra2CRIGAIFSCI(SPD=NA, isoTempLinesTable=NA, CCT=NA, 
CIETable = get("ciexyz31", envir = environment()), TCS = get("TCSdata", 
envir = environment()))

Arguments

Value

CRI, GAI and FSCI

Author(s)

Jose Gama

Source

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

References

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

Examples

# illuminant A
## Not run: 
SPD = illuminants[1:51*2-1,c('wlnm','A')] # every 10 nm
isoTempLinesTable <- createIsoTempLinesTable(SPD)
CCT <- spectra2CCT(SPD)
spectra2CRIGAIFSCI(SPD, isoTempLinesTable, CCT)
spectra2CRIGAIFSCI(SPD, isoTempLinesTable)
spectra2CRIGAIFSCI(SPD)

## End(Not run)

Description

spectra2ISObrightness Diffuse blue reflectance factor (ISO brightness), R457, ISO 2470.

Usage

spectra2ISObrightness(spectraIn=NA, wlIn=NA, 
RSDmatrix=get("ISObrightnessReflectometerRSD", envir = environment()))

Arguments

Value

LCHuv coordinates

Author(s)

Jose Gama

Source

ISO board, 2009 ISO 2470-1 : 2009 PAPER, BOARD AND PULPS MEASUREMENT OF DIFFUSE BLUE REFLECTANCE FACTOR PART 1 INDOOR DAYLIGHT CONDITIONS (ISO BRIGHTNESS)

References

ISO board, 2009 ISO 2470-1 : 2009 PAPER, BOARD AND PULPS MEASUREMENT OF DIFFUSE BLUE REFLECTANCE FACTOR PART 1 INDOOR DAYLIGHT CONDITIONS (ISO BRIGHTNESS)

Examples

spectra2ISObrightness(MaterialReferenceData[,c( 'BlueSky')], 
MaterialReferenceData[,c('wavelength' )])

Description

spectra2lux Illuminance (Lux) from spectra.

Usage

spectra2lux(spectraIn=NA, ciexyzIn=NA,wlIn=NA, wlInterval=NA)

Arguments

Value

Correlated Color Temperature (CCT)

Author(s)

Jose Gama

Source

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

References

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

Examples

spectra2lux(MaterialReferenceData[,c('wavelength','BlueSky')])

Description

spectra2XYZ convert spectral data to tristimulus values.

Usage

spectra2XYZ(spectraIn=NA, illuminantIn=NA, ciexyzIn=NA,wlIn=NA, wlInterval=NA)

Arguments

Value

XYZ coordinates

Author(s)

Jose Gama

Source

Andrew S. Glassner, 1995 Principles of digital image synthesis: Vol. 1 Kaufmann

References

Andrew S. Glassner, 1995 Principles of digital image synthesis: Vol. 1 Kaufmann

Examples

spectra2XYZ(MaterialReferenceData[,c('wavelength','BlueSky')])

Description

sprague Interpolates an n by w matrix of spectra, sprague.

Usage

sprague(spectra, f)

Arguments

Value

Interpolated spectral data

Author(s)

Jose Gama

Source

Stephen Westland, 2014 http://www.mathworks.com/matlabcentral/fileexchange/40640-computational-colour-science-using-matlab-2e/content/sprague.m

References

Stephen Westland, 2014 http://www.mathworks.com/matlabcentral/fileexchange/40640-computational-colour-science-using-matlab-2e/content/sprague.m

Description

StearnsStearnscorrection Stearns and Stearns correction.

Usage

StearnsStearnscorrection(P)

Arguments

Value

RGB coordinates

Author(s)

Jose Gama

Source

Stephen Westland and Caterina Ripamonti, 2004 Computational Colour Science using MATLAB John Wiley & Sons Ltd, pp.35

References

Stephen Westland and Caterina Ripamonti, 2004 Computational Colour Science using MATLAB John Wiley & Sons Ltd, pp.35

Description

Stensby68.Whiteness formula was developed by Mr. P. Stensby (formerly employee of J.R. Geigy AG in US.)

Usage

Stensby68.Whiteness(LabHunterMatrix)

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

Stensby68.Whiteness(c(0.310897, 0.306510, 74.613450))

Description

StockmanMacLeodJohnson10degConeFundamentals1993 Stockman, MacLeod & Johnson (1993) 2-deg cone fundamentals based on the CIE 10-deg CMFs (adjusted to 2-deg).

Usage

StockmanMacLeodJohnson10degConeFundamentals1993

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L10

L-cone spectral sensitivity, L10(lambda)

M10

M-cone spectral sensitivity, M10(lambda)

S10

S-cone spectral sensitivity, S10(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(StockmanMacLeodJohnson10degConeFundamentals1993)
StockmanMacLeodJohnson10degConeFundamentals1993

Description

StockmanMacLeodJohnson2degCIEadjConeFundamentals1993 Stockman, MacLeod & Johnson (1993) 2-deg cone fundamentals based on the CIE 10-deg CMFs (adjusted to 2-deg).

Usage

StockmanMacLeodJohnson2degCIEadjConeFundamentals1993

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(StockmanMacLeodJohnson2degCIEadjConeFundamentals1993)
StockmanMacLeodJohnson2degCIEadjConeFundamentals1993

Description

StockmanMacLeodJohnson2degStilesBurchConeFundamentals1993 Stockman, MacLeod & Johnson (1993) 2-deg fundamentals based on the Stiles & Burch 2-deg CMFs.

Usage

StockmanMacLeodJohnson2degStilesBurchConeFundamentals1993

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(StockmanMacLeodJohnson2degStilesBurchConeFundamentals1993)
StockmanMacLeodJohnson2degStilesBurchConeFundamentals1993

Description

StockmanSharpe10degCMFS2000 Stockman & Sharpe (2000) 10-deg cone fundamentals based on the Stiles & Burch 10-deg CMFs linear 5nm.

Usage

StockmanSharpe10degCMFS2000

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L10

L-cone spectral sensitivity, L10(lambda)

M10

M-cone spectral sensitivity, M10(lambda)

S10

S-cone spectral sensitivity, S10(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(StockmanSharpe10degCMFS2000)
StockmanSharpe10degCMFS2000

Description

StockmanSharpe2degCMFadj2000 Stockman & Sharpe (2000) 2-deg cone fundamentals based on the Stiles & Burch 10-deg CMFs (adjusted to 2-deg) linear 5nm.

Usage

StockmanSharpe2degCMFadj2000

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(StockmanSharpe2degCMFadj2000)
StockmanSharpe2degCMFadj2000

Description

SystemISCCNBS is a table with the ISCC-NBS System data.

Usage

SystemISCCNBS

Format

This data frame contains the following data:

HueInterval

interval of hues in the hue chart defining the elementary block

Hmin

minimum ASTM D1535 Hue for the elementary block

Hmax

maximum ASTM D1535 Hue for the elementary block

Vmin

minimum Value for the elementary block

Vmax

maximum Value for the elementary block

Cmin

minimum Chroma for the elementary block

Cmax

maximum Chroma for the elementary block. Cmax=Inf for some elementary blocks.

Number

color number of the elementary block, from 1 to 267

Author(s)

Glenn Davis

References

Color : Universal Language and Dictionary of Names ISCC-NBS Method of Designating Colors and a Dictionary of Color Names Kelly, Kenneth Low Judd, Deane Brewster NBS Special Publication 440 December 1976 Section 13: Color Name Charts, pp. 16-31

Examples

data(SystemISCCNBS)
SystemISCCNBS

Description

Taube60.Whiteness developed by Mr. Taube (formerly an employee of BASF AG, Germany). It was presented in 1960 and has found it's application mainly in the plastic sector.

Usage

Taube60.Whiteness(XYZmatrix, illuminant = "D65", observer = 2, RefWhite
                 = get("XYZperfectreflectingdiffuser", envir = environment()))

Arguments

Author(s)

Jose Gama

Source

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

References

Xrite, 2012 Color iQC and Color iMatch Color Calculations Guide Version 8.0 30 July 2012 Revision 1.0

Examples

XYZ<-c(0.11465380, 0.08391198, 0.08222077)
Taube60.Whiteness(XYZ)

Description

TCSdata is a table with the spectral reflectance data of 14 color test samples for CRI.

Usage

TCSdata

Format

This data frame contains the following data:

wavelength

wavelength (nm)

TCS1

spectral reflectance data for sample 1

TCS2

spectral reflectance data for sample 2

TCS3

spectral reflectance data for sample 3

TCS4

spectral reflectance data for sample 4

TCS5

spectral reflectance data for sample 5

TCS6

spectral reflectance data for sample 6

TCS7

spectral reflectance data for sample 7

TCS8

spectral reflectance data for sample 8

TCS9

spectral reflectance data for sample 9

TCS10

spectral reflectance data for sample 10

TCS11

spectral reflectance data for sample 11

TCS12

spectral reflectance data for sample 12

TCS13

spectral reflectance data for sample 13

TCS14

spectral reflectance data for sample 14

Author(s)

Jose Gama

Source

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

References

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI https://www.lrc.rpi.edu/programs/nlpip/lightinganswers/pdf/print/lightsources.pdf

Examples

data(TCSdata)
TCSdata

Description

tristimulusMunsell is a table with 434 Munsell colors with tristimulus and Color matching functions for illuminants A, C D and S.

Usage

tristimulusMunsell

Format

This data frame contains the following data:

Munsell

Munsell color notation

X.A

tristimulus X for illuminant A

Y.A

tristimulus Y for illuminant A

Z.A

tristimulus Z for illuminant A

x.A

CMF x for illuminant A

y.A

CMF y for illuminant A

X.C

tristimulus X for illuminant C

Y.C

tristimulus Y for illuminant C

Z.C

tristimulus Z for illuminant C

x.C

CMF x for illuminant C

y.C

CMF y for illuminant C

X.D

tristimulus X for illuminant D

Y.D

tristimulus Y for illuminant D

Z.D

tristimulus Z for illuminant D

x.D

CMF x for illuminant D

y.D

CMF y for illuminant D

X.S

tristimulus for X illuminant S

Y.S

tristimulus for Y illuminant S

Z.S

tristimulus for Z illuminant S

x.S

CMF x for illuminant S

y.S

CMF y for illuminant S

X

Munsell painting number

Author(s)

Jose Gama

Source

K. L. Kelley, K. S. Gibson, and D. Nickerson, 1943 "Tristimulus specification of the Munsell Book of Color from spectrophotometric measurements," J. Opt. Soc. Am. 33, 355–376

References

K. L. Kelley, K. S. Gibson, and D. Nickerson, 1943 "Tristimulus specification of the Munsell Book of Color from spectrophotometric measurements," J. Opt. Soc. Am. 33, 355–376

Examples

data(tristimulusMunsell)
tristimulusMunsell

Description

VosEstevezWalraven2degConeFundamentals1990 Vos, Estévez & Walraven (1990) 2-deg fundamentals based on the Stiles & Burch 2-deg CMFs.

Usage

VosEstevezWalraven2degConeFundamentals1990

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(VosEstevezWalraven2degConeFundamentals1990)
VosEstevezWalraven2degConeFundamentals1990

Description

VosWalraven2degConeFundamentals1971 Vos & Walraven(1971) 2-deg cone fundamentals based on the CIE Judd-Vos 2-deg CMFs.

Usage

VosWalraven2degConeFundamentals1971

Format

This data frame contains the following data:

wlnm

wavelength (nm)

L2

L-cone spectral sensitivity, L2(lambda)

M2

M-cone spectral sensitivity, M2(lambda)

S2

S-cone spectral sensitivity, S2(lambda)

Author(s)

Jose Gama

Source

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

References

The Colour & Vision Research laboratory(CVRL) Institute of Ophthalmology, University College London www.cvrl.org

Examples

data(VosWalraven2degConeFundamentals1971)
VosWalraven2degConeFundamentals1971

Description

WestlandBlacknessIndex (Westland, et al., 2006) blackness index.

Usage

WestlandBlacknessIndex(CIELabMatrix)

Arguments

Value

blackness index

Author(s)

Jose Gama

Source

Westland, S.; Cheung, T. L. V.; Lozman, O. R., 2006. A metric for predicting perceptual blackness. 14th Color Imaging Conference Final Program and Proceedings, 14-17.

References

Westland, S.; Cheung, T. L. V.; Lozman, O. R., 2006. A metric for predicting perceptual blackness. 14th Color Imaging Conference Final Program and Proceedings, 14-17.

Examples

CIELab<-c(34.78467, 28.15159, 3.024663)
WestlandBlacknessIndex(CIELab)

Description

whitepointsilluminants is a table with White points of standard illuminants.

Usage

whitepointsilluminants

Format

This data frame contains the following data:

illuminant

illuminant

description

description

x2

x2

y2

y2

x10

x10

y10

y10

CCT

CCT

Author(s)

Jose Gama

Source

Wikipedia, 2014 White points of standard illuminants https://en.wikipedia.org/wiki/Standard_illuminant

References

Wikipedia, 2014 White points of standard illuminants https://en.wikipedia.org/wiki/Standard_illuminant

Examples

data(whitepointsilluminants)
whitepointsilluminants

Description

whitepointsRGB is a table with primaries for RGB color spaces.

Usage

whitepointsRGB

Format

This data frame contains the following data:

xRed

Primary red x

yRed

Primary red y

xGreen

Primary green x

yGreen

Primary green y

xBlue

Primary blue x

yBlue

Primary blue y

whitepointilluminant

illuminant

gamma

gamma

description

Color space name

Author(s)

Jose Gama

Source

Wikipedia, 2014 RGB color space https://en.wikipedia.org/wiki/RGB_color_space

References

Wikipedia, 2014 RGB color space https://en.wikipedia.org/wiki/RGB_color_space

Examples

data(whitepointsRGB)
whitepointsRGB

Description

wlnm2XYZ Approximates wavelength to CIE tristimulus XYZ, by interpolation.

wlnm2xyz Approximates wavelength to CIE xyz, by interpolation.

Usage

wlnm2XYZ(wavelength)

Arguments

Value

CIE XYZ

Author(s)

Jose Gama

Examples

wlnm2XYZ(555)

Description

xFit_1931 Approximations from wavelengths to XYZ by Wyman et al.

Usage

xFit_1931(wave)

Arguments

Value

XYZ X, Y or Z coordinate

Author(s)

Jose Gama

Source

Chris Wyman Peter-Pike Sloan Peter Shirley, 2013 Simple Analytic Approximations to the CIE XYZ Color Matching Functions Journal of Computer Graphics Techniques Vol. 2, No. 2

References

Chris Wyman Peter-Pike Sloan Peter Shirley, 2013 Simple Analytic Approximations to the CIE XYZ Color Matching Functions Journal of Computer Graphics Techniques Vol. 2, No. 2

Examples

xFit_1931(555)
yFit_1931(555)
zFit_1931(555)

Description

xy2CCT.HernandezAndres convert from chromaticity coordinates to correlated color temperature (approximation) by Hernandez Andres.

Usage

xy2CCT.HernandezAndres(x,y)

Arguments

Value

CCT (Hernandez Andres)

Author(s)

Jose Gama

Source

Hernandez-Andres, et al. 1999 "Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities" https://en.wikipedia.org/wiki/Color_temperature

References

Hernandez-Andres, et al. 1999 "Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities" https://en.wikipedia.org/wiki/Color_temperatures

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
xy2CCT.HernandezAndres(xyY[1],xyY[2])

Description

xy2CCT.McCamy convert from chromaticity coordinates to correlated color temperature (approximation).

Usage

xy2CCT.McCamy(x,y)

Arguments

Value

CCT McCamy

Author(s)

Jose Gama

Source

C. S. McCamy, 1992 "Correlated color temperature as an explicit function of chromaticity coordinates" Color Research & Application Volume 17, Issue 2, pages 142–144

References

C. S. McCamy, 1992 "Correlated color temperature as an explicit function of chromaticity coordinates" Color Research & Application Volume 17, Issue 2, pages 142–144

Examples

xyY <- c(0.4083308, 0.2988462, 0.08391198)
xy2CCT.McCamy(xyY[1],xyY[2])

Description

xyChromaticitiesVos1978 x, y coordinates transformed to Judd (1951) x', y' system.

Usage

xyChromaticitiesVos1978(x,y)

Arguments