240215 1L2L0X0B_S2710.KTS/YEWLBIN.KTS, http://farbe.li.tu-berlin.de/BEWS.HTM or http://color.li.tu-berlin.de/BEWS.HTM

For links to the Section 2, Chapter B Colour Vision and Colourimetry (2020), see
For this image page with 10 colour series, see BEWS in English, BGWS in German.
For the previous image page, see BEVS in English, BGVS in German.
For the next image page, see BEXS in English, BGXS in German.
For the first image page of the previous chapter A, see AEAS in English, AGAS in German.
For the first image page of the next chapter C, see CEAS in English, CGAS in German.

Content list of chapter B: BEA_I in English or BGA_I in German.
Summary of chapter B: BEA_S in English or BGA_S in German.
For the large image page of chapter B with 260 colour series, see be2s in English or bg2s in German.

Section 2, Chapter B
Colour vision and Colorimetry (2020), Image part BEWS

Title: Colour thresholds and line elements in 10 colour spaces IECsRGBu0 to 9
1. Introduction and goals;
2. Modifications IECsRGBu0 to 9 of the colour space IECsRGB similar to CIELAB;
3. Corresponding line elements for the experimental contrast Y/(delta Y);
4. Absolute lightness L* (CIE 15) and T* (IEC 61066-2-1 (sRGB)) and relative lightness l* and t*;
5. Logarithmic and linear figures for L*, T*, l* and t*;
6. Logarithmic figures for threshold delta Y, sensitivity (delta Y)/Y, and contrast Y/(delta Y);
7. Parameters of the formula T*=Sn(Y/Yu)^(1/g)-Sd with Yu=18,
for exaample Sn=50, 1/g=1/2,4, Sd=0.

The following ten pages BEW0 to BEW9 of this chapter
show the content with links to the single figures in up to six formats.


Figure BEW0L0N1.jpg: Output in format A6 of the file BEW0L0NP.PDF, see
BEW0L0N1. PS / TXT / PDF / jpg

BEW0: TUB-test chart BEW0; Colour-difference formulae t* & T*
IECsRGBu0 colour-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW1L0N1.jpg: Output in format A6 of the file BEW1L0NP.PDF, see
BEW1L0N1. PS / TXT / PDF / jpg

BEW1: TUB-test chart BEW1; Colour-difference formulae t* & T*
IECsRGBu1 colour-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW2L0N1.jpg: Output in format A6 of the file BEW2L0NP.PDF, see
BEW2L0N1. PS / TXT / PDF / jpg

BEW2: TUB-test chart BEW2; Colour-difference formulae t* & T*
IECsRGBu2 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW3L0N1.jpg: Output in format A6 of the file BEW3L0NP.PDF, see
BEW3L0N1. PS / TXT / PDF / jpg

BEW3: TUB-test chart BEW3; Colour-difference formulae t* & T*
IECsRGBu3 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW4L0N1.jpg: Output in format A6 of the file BEW4L0NP.PDF, see
BEW4L0N1. PS / TXT / PDF / jpg

BEW4: TUB-test chart BEW4; Colour-difference formulae t* & T*
IECsRGBu4 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW5L0N1.jpg: Output in format A6 of the file BEW5L0NP.PDF, see
BEW5L0N1. PS / TXT / PDF / jpg

BEW5: TUB-test chart BEW5; Colour-difference formulae t* & T*
IECsRGBu5 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW6L0N1.jpg: Output in format A6 of the file BEW6L0NP.PDF, see
BEW6L0N1. PS / TXT / PDF / jpg

BEW6: TUB-test chart BEW6; Colour-difference formulae t* & T*
IECsRGBu6 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW7L0N1.jpg: Output in format A6 of the file BEW7L0NP.PDF, see
BEW7L0N1. PS / TXT / PDF / jpg

BEW7: TUB-test chart BEW7; Colour-difference formulae t* & T*
IECsRGBu7 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW8L0N1.jpg: Output in format A6 of the file BEW8L0NP.PDF, see
BEW8L0N1. PS / TXT / PDF / jpg

BEW8: TUB-test chart BEW8; Colour-difference formulae t* & T*
IECsRGBu8 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast



Figure BEW9L0N1.jpg: Output in format A6 of the file BEW9L0NP.PDF, see
BEW9L0N1. PS / TXT / PDF / jpg

BEW9: TUB-test chart BEW9; Colour-difference formulae t* & T*
IECsRGBu9 triangle-lightness formulae for (Y/Yn)
absolute and relative lightness, sensitivity and contrast

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For the archive information (2000-2009) of the BAM server "www.ps.bam.de" (2000-2018)
about colour test charts, colorimetric calculations, standards, and publications, see
indexAE.html in English, indexAG.html in German.

Back to the main page of this TUB web site (NOT archive), see index.html in English, indexDE.html in German.