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Development of a device independent visual RGB* colour space for colour vision and image technology

Some basic colorimetric and colour vision data for thresholds, and for antichromatic optimal Ostwald colours.

Figures and data of "Development of a device independent visual RGB* colour space for colour vision and image technology" are in the folders VEXX (colour series V, E=English, XX=00 to 99).

Folder and Title
Development of a device independent visual RGB* colour space for colour vision and image technology

See also the booklet of K. Richter (2015, 80 pages, 2,5 MB) Colour, Colour Vision and Elementary Colours in Colour Information Technology
ES15.PDF

Small colour differences predicted by the CIELAB and CIEDE2000 colour difference formulas
VE00: Colorimetric data of optimal colours for 8 CIE illuminants and the CIE 2 degree and 10 degree observers.
VE01: Eight optimal colours and mixtures with White (W) and black (N).
Colour differences of one CIELAB unit in 3 directions _WN, _RG, and _YB.
VE02: Eight optimal colours and mixtures with White (W) and black (N).
Colour differences of one CIEDE2000 unit in 3 directions _WN, _RG, and _YB.

Colour threshold data: Richter, Kittelmann, Avramopoulos; tp=26s
bipartite field, 3,5 degree viewing field; grey surround with Y=18; L=60 cd/m**2;
Achromatic colours in WN direction; delta_Y*1 or delta_Y*10
Comparison with predictions of CIELAB and CIEDE2000 formulae
VE03: Experimental threshold data RI: Richter (1985), 11 achromatic pairs for surround chromaticity near D65 and P40; delta_Y*1
VE04: Experimental threshold data KI: Kittelmann (2009), 18 achromatic pairs for surround chromaticity near D65; delta_Y*1
VE05: Experimental threshold data AV: Avramopoulos (1988), 18 achromatic pairs of constant chromaticity for surround chromaticity near P40; delta_Y*1
VE06: Experimental threshold data AV: Avramopoulos (1988), 16 yellow pairs of constant chromaticity for surround chromaticity near P40; delta_Y*10
VE07: Experimental threshold data AV: Avramopoulos (1988), 11 blue pairs of constant chromaticity for surround chromaticity near P40; delta_Y*10
VE08: Experimental threshold data AV: Avramopoulos (1988), 18 red pairs of constant chromaticity for surround chromaticity near P40; delta_Y*10
VE09: Experimental threshold data AV: Avramopoulos (1988), 18 green pairs of constant chromaticity for surround chromaticity near P40; delta_Y*10

Colour difference data of CIEDE2000 power correction formula of Cui
bipartite field, 10 degree viewing field; grey surround with Y=18; L=60 cd/m**2;
Achromatic colours in WN direction;
Comparison with predictions of CIELAB and CIEDE2000 formulae
VE10: CIEDE2000 power correction data set of Cui, 18 achromatic pairs for surround chromaticity near D65

Colour threshold data: Richter, Kittelmann, Avramopoulos; tp=26s
bipartite field, 3,5 degree viewing field; grey surround with Y=18; L=60 cd/m**2;
Achromatic colours in WN direction;; delta_Y*10
Comparison with predictions of CIELAB and CIEDE2000 formulae
VE11: Experimental threshold data RI: Richter (1985), 11 achromatic pairs for surround chromaticity near D65
VE12: Experimental threshold data KI: Kittelmann (2009), 18 achromatic pairs for surround chromaticity near D65
VE13: Experimental threshold data AV: Avramopoulos (1988), 18 achromatic pairs for surround chromaticity near P40

Colour scaling data: COM data sets; Witt, RIT_Dupont, LEEDS, BFD.01
bipartite field, 10 degree viewing field; grey surround with Y=18; L=60 cd/m**2;
Achromatic colours in WN direction;
Comparison with predictions of CIELAB and CIEDE2000 formulae
VE14: Experimental data WI WITT data set, 18 achromatic pairs for surround chromaticity near D65
VE15: Experimental data RD RIT-DUPONT data set, 12 achromatic pairs for surround chromaticity near D65
VE16: Experimental data LE LEEDS data set, 76 achromatic colour pairs for surround chromaticity near D65
VE17: Experimental data BF BFD.01 data set, 85 colour pairs for surround chromaticity near D65

Colour threshold data: Richter; tp=26s
bipartite field, 3,5 degree viewing field; grey surround with Y=18; L=60 cd/m**2;
Achromatic colours in WN direction;; delta_Y*10; wide Y range
Comparison with predictions of CIELAB and CIEDE2000 formulae
VE18: Experimental data RI: Richter (1985), 18 achromatic pairs for surround chromaticity near P40; wide Y range

Ostwald optimal colours of maximum chromatic value CAB for CIE illuminants D65 and D50
CIE 2 degree and 10 degree observer; CIE- and rgb*e data for 16 elementary hue angles
intended for use in colorimetry and image technology (compare CIE R1-57)
VE20: Ostwald optimal colours of maximum chromatic value CAB for CIE D65 and D50, and 2 and 10 degree observer; CIEXYZ data, 1 page
VE21: Ostwald optimal colours of maximum chromatic value CAB for CIE D65 and D50, and 2 and 10 degree observer; LINYAB data, 1 page
VE22: Ostwald optimal colours of maximum chromatic value CAB for CIE D65 and D50, and 2 and 10 degree observer; CIELAB data, 1 page

Computer graphics and colorimetry, Colour book series, Colour scaling and thresholds no. 3
VE23: Colour book series, Colour scaling and thresholds no. 3, 1 page

Colour difference formulae, CIELAB and sRGB formula according to IEC 61966-2-1 (linear and log scales)
VE24: Formulae for lightness and colour discrimination in CIELAB and sRGB colour space, 1 page
VE25: CIELAB and sRGB formula (achromatic and chromatic) according to IEC 61966-2-1 (linear scales), 1 page
VE26: Colour difference formulae, CIELAB and sRGB formula (achromatic) according to IEC 61966-2-1 (log scales), 1 page
VE27: CIELAB and sRGB formula (achromatic and chromatic) according to IEC 61966-2-1 (log scales), 1 page

Ostwald optimal colours, Colour vision, and formulae
VE28: Ostwald optimal colours, formulae, line elements, 1 page
VE29: Ostwald optimal colours, Weber-Fechner law for colour vision, 1 page

Ostwald optimal colours of maximum chromatic value CAB for 8 illuminants
CIE 2 degree and 10 degree observer; CIEXYZ and rgb*e data for 16 elementary hue angles
intended for use in colorimetry and image technology (compare CIE R1-57)
VE30: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D65; LINYAB data, 2 pages
VE31: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D50; LINYAB data, 2 pages
VE32: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D65; CIELAB data, 2 pages
VE33: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D50; CIELAB data, 2 pages
VE34: Ostwald optimal colours of maximum chromatic value CAB for 8 CIE illuminants; CIEXYZ data, 8 pages
VE35: Ostwald optimal colours of maximum chromatic value CAB for 8 CIE illuminants; LINYAB data, 8 pages
VE36: Ostwald optimal colours of maximum chromatic value CAB for 8 CIE illuminants; CIELAB data, 8 pages
VE37: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D65; CIEXYZ data, 2 pages
VE38: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant E; LINYAB data, 2 pages
VE39: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant E; CIELAB data, 2 pages

Ostwald optimal colours of maximum chromatic value CAB for 8 illuminants
CIE 2 degree and 10 degree observer; CIEXYZ and rgb*e data for 360 hue angles
intended for use in colorimetry and image technology (compare CIE R1-57)
VE40: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D65; LINYAB data, 5 pages
VE41: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D50; LINYAB data, 5 pages
VE42: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D65; CIELAB data, 5 pages
VE43: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D50; CIELAB data, 5 pages
VE44: Ostwald optimal colours of maximum chromatic value CAB for 8 CIE illuminants; CIEXYZ data, 8 pages
VE45: Ostwald optimal colours of maximum chromatic value CAB for 8 CIE illuminants; LINYAB data, 8 pages
VE46: Ostwald optimal colours of maximum chromatic value CAB for 8 CIE illuminants; CIELAB data, 8 pages
VE47: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant D65; CIEXYZ data, 5 pages
VE48: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant E; LINYAB data, 5 pages
VE49: Ostwald optimal colours of maximum chromatic value CAB for CIE standard illuminant E; CIELAB data, 5 pages

Colour difference formulae, colour pairs with Visual threshold colour differences (V=Visual) (VCD)
VE50: 330 + 392 + 132 colour pairs with Visual threshold differences (VCD)
delta_E* distribution and STRESS for datasets RI, KI, and AV
VE51: 330 colour pairs with Visual threshold differences (VCD), XYZ, visual and delta_E* data for dataset RI=RICHTER
VE52: 392 colour pairs with Visual threshold differences (VCD), XYZ, visual and delta_E* data for dataset KI=KITTELMANN
VE53: 132 colour pairs with Visual threshold differences (VCD), XYZ, visual and delta_E* data for dataset AV=AVRAMOPOULOS

Colour difference formulae, colour pairs with small colour differences (S=small) (SCD)
VE54: 418 colour pairs with small colour differences (SCD), XYZ, visual and delta_E* data for dataset WI=WITT
VE55: 312 colour pairs with small colour differences (SCD), XYZ, visual and delta_E* data for dataset RD=RIT_DUPONT
VE56: 307 colour pairs with small colour differences (SCD), XYZ, visual and delta_E* data for dataset LE=LEEDS
VE57: 2776 colour pairs with small colour differences (SCD), XYZ, visual and delta_E* data for dataset BF=BFD_ALL
VE58: 446 colour pairs with small colour differences (SCD), XYZ, visual and delta_E* data for dataset SS=BIGC_S_SG
VE59: 418 + 312 + 307 + 2776 + 446 colour pairs with small colour differences (SCD)
delta_E* distribution and STRESS for datasets WI, RD, LE, BF, and SS

CIELAB colour difference formulae, and modifications LINYAB (linear), EXPYAB (exponential)
VE60: CIELAB colour difference formulae, and modification EXPYAB (exponential), Lightness L*, delta_Y, Y/delta_Y, and others as function of log Y
VE61: CIELAB colour difference formulae, and modification LINYAB (linear), Lightness L*, delta_Y, Y/delta_Y, and others as function of log Y
VE62: CIELAB and LINYAB formulae, with linear functions (LIN); under development

CIE colorimetry and CIE fundamental (F) colorimetry
VE63: CIE colorimetry; Munsell colours of Chroma 2 and Value 1, 2, 5, 8, and 9, and elementary colours in different diagrams; under development
VE64: CIE fundamental (F) colorimetry; Munsell colours of Chroma 2 and Value 1, 2, 5, 8, and 9, and elementary colours in different diagrams; under development

User wishes according to DIN 33872-X
VE65: Discriminability of 20 step hue circle (DIN 33872-5)
Discriminability of 16 step colour series (DIN 33872-2)

Tables of colour threshold data in CIE spaces Yxy, CIELAB and others; LABJND with constants for A and D65
VE66: RI-experiments: series WPN, WDN, GDR, BDY in directions WN, GR, BY; CIE-Yxy- and CIE-Yxy difference data
VE67: RI-experiments: series WPN, WDN, GDR, BDY in directions WN, GR, BY; CIELAB, LABJND, CMC, CIE94, CIEDE2000 data
VE68: RI-experiments: series GDV and RDC in directions TM, BY, GV, RC; CIE-Yxy and CIE-Yxy difference data
VE69: RI-experiments: series GDV und RDC in directions TM, BY, GV, RC; CIELAB, LABJND, CMC, CIE94, CIEDE2000 data
VE70: RI-experiments: series GDV, RDC, TDM, and BDY in directions TM und BY; CIELAB, LABJND, CMC, CIE94, CIEDE2000 data

Colour difference formulae, colour pairs with Threshold colour differences (T=thresshold) (TCD)
VE71: 100 colour pairs with Threshold colour differences (TCD), XYZ, visual and delta_E* data for dataset WA=WANG
VE72: 890 colour pairs with Threshold colour differences (TCD), XYZ, visuelle und delta_E*-Daten für Datensatz 1S=BIGC_T1_SG
VE73: 399 colour pairs with Threshold colour differences (TCD), XYZ, visual and delta_E* data for dataset 2M=BIGC_T2_M
VE74: 446 colour pairs with Threshold colour differences (TCD), XYZ, visual and delta_E* data for dataset 2S=BIGC_T2_SG
VE75: 379 colour pairs with Threshold colour differences (TCD), XYZ, visual and delta_E* data for dataset 2G=BIGC_T2_G

CIE colorimetry and CIE fundamental (F) colorimetry
VE76: CIE colorimetry; CIE colorimetry; Munsell colours of Chroma 2 and Value 1, 2, 5, 8, and 9, and elementary colours in different diagrams; under development
VE77: CIE fundamental (F) colorimetry; cone sensitivity and excitation and spectral tristimulus values for CIE illuminant E, linear scales
VE78: CIE fundamental (F) colorimetry; cone sensitivity and excitation and spectral tristimulus values for CIE illuminant E, logarithmic scales

Colour difference formulae, colour pairs with Threshold colour differences (TCD)
VE79: 100 + 890 + 399 + 446 + 379 colour pairs with Threshold colour differences (TCD)
delta_E* distribution and STRESS for datasets WA, 1S, 2M, 2S, and 2G

Colour difference formulae, colour pairs with large colour differences (L=large) (LCD)
VE80: 624 colour pairs with large colour differences (LCD), Original XYZ and visual data of TU Berlin (2009) for dataset KL=KITTELMANN_L
VE81: 128 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset OS=OSA
VE82: 844 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset MU=MUNSELL
VE83: 1308 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset PO=POINTER
VE84: 292 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset GU=GUAN
VE85: 144 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset ZH=ZHU
VE86: 238 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset BA=BADU_P
VE87: 80 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset RL=RICHTER_L
VE88: 624 colour pairs with large colour differences (LCD), XYZ, visual and delta_E* data for dataset KL=KITTELMANN_L
VE89: 128 + 844 + 1308 + 292 + 244 + 238 + 80 + 624 colour pairs with large colour differences (LCD)
delta_E* distribution and STRESS for datasets OS, MU, PO, GU, ZH, BA, RL, and KL

Colour difference formulae, output with delta_E* distribution and STRESS for datasets VCD, TCD, SCD und LCD
VE90: 330 + 392 + 132 colour pairs with Visual threshold differences (VCD) for datasets RI, KI, and AV
VE91: 100 + 890 + 399 + 446 + 379 colour pairs with Threshold colour differences (TCD) for datasets WA, 1S, 2M, 2S, and 2G
VE92: 418 + 312 + 307 + 2776 + 446 colour pairs with Small colour differences (SCD) for datasets WI, RD, LE, BF und SS
VE93: 128 + 844 + 1308 + 292 + 244 + 238 + 80 + 624 colour pairs with Large colour differences (LCD) for datasets OS, MU, PO, GU, ZH, BA, RL, and KL

Colour difference formulae, tables with delta_E* distribution and STRESS for datasets VCD, TCD, SCD und LCD
VE94: 330 + 392 + 132 colour pairs with Visual threshold differences (VCD) for datasets RI, KI, and AV
VE95: 100 + 890 + 399 + 446 + 379 colour pairs with Threshold colour differences (TCD) for datasets WA, 1S, 2M, 2S, and 2G
VE96: 418 + 312 + 307 + 2776 + 446 colour pairs with Small colour differences (SCD) for datasets WI, RD, LE, BF und SS
VE97: 128 + 844 + 1308 + 292 + 244 + 238 + 80 + 624 colour pairs with Large colour differences (LCD) for datasets OS, MU, PO, GU, ZH, BA, RL, and KL

Examples of affine colorimetry; rgb* input data and LCh* output data
VG98: sRGB- and offset colours; 9 step colour series in CIELAB hue triangles
VG99: Ostwald- and offset colours; 9 step colour series in CIELAB hue triangles.

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