241201 1L2L0X0H_K2710.KTS/YEplHIN.KTS http://color.li.tu-berlin.de/heps.htm or http://farbe.li.tu-berlin.de/heps.htm

For links to the Section 2, Chapter H SDR and HDR-colour metric for optimal colour-image quality (2025) , under work, see
For this image page with 10 colour series, see heps in English, hgps in German.
For the previous image page, see heos in English, hgos in German.
For the next image page, see heqs in English, hgqs in German.
For the first image page of the previous chapter G, see geas in English, ggas in German.
For the first image page of the next chapter I (under work), see ieas in English, igas in German.

Content list of chapter H (under work): hea_i in English or hga_i in German.
Summary of chapter H: hea_s in English or hga_s in German.
For the large image page of chapter H with 260 colour series, see he2s in English or hg2s in German.

Section 2, Chapter H
SDR and HDR-colour metric for optimal colour-image quality (2025), Image part heps

Title: Special colourimetric properties of colour-image technology
Calculations with colour-difference formulae HAULAB, CIELAB, IECsRGB, and TUBsRGB
1. Introduction and goals.
2. Special colourimetric properties of colour-image technology;
3. Calculations with colour-difference formulae a. HAULAB, experiments of Haubner, P,. Bodmann, and Marsden
Siemens Forsch. u. Entwickl-Ber. 9 (1980), 315-318;
b. CIELAB according to (ISO/CIE 11664-4);
c. IECsRGB according to (IEC 61966-2-1);
d. TUBsRGB 2025, see https://colour.li.tu-berlin.de;
e. HAULAB 1980, as function of viewing angle and adaptation luminance;
4. Calculation of log and lin [lightness L*, treshold delta_Y,
sensitivity delta_Y/Y, contrast Y/delta_Y]#w";
6. Application and discussion.

The following ten pages hep0 to hep9 of this chapter
show the content with links to the single figures in up to six formats.


Figure hep0l0n1.jpg: Output in format A6 of the file hep0l0np.pdf, see
hep0l0n1. ps / txt / pdf / jpg

hep0: TUB-test chart hep0; LABJND, CIELAB, IECsRGB, and
TUBsRGB-colour difference formulae, log & lin [lightness L*,
threshold delta_Y, sensitivity delta_Y/Y, contrast Y/delta_Y]



Figure hep1l0n1.jpg: Output in format A6 of the file hep1l0np.pdf, see
hep1l0n1. ps / txt / pdf / jpg

hep1: TUB-test chart hep1; Relationship between brightness B*T
and luminance LT as function of sample viewing angle phi
for surround luminances La=(300, 1000, 200, 40) cd/m^2



Figure hep2l0n1.jpg: Output in format A6 of the file hep2l0np.pdf, see
hep2l0n1. ps / txt / pdf / jpg

hep2: TUB-test chart hep2; LABJND, CIELAB, IECsRGB, and
TUBsRGB-colour difference formulae, log & lin [lightness L*,
threshold delta_Y, sensitivity delta_Y/Y, contrast Y/delta_Y]



Figure hep3l0n1.jpg: Output in format A6 of the file hep3l0np.pdf, see
hep3l0n1. ps / txt / pdf / jpg

hep3: TUB-test chart hep3; Formulae HAULAB, Haubner (1980)
and CIELAB (ISO/CIE 11664-4), log & lin [lightness L*,
threshold delta_Y, sensitivity delta_Y/Y, contrast Y/delta_Y]



Figure hep4l0n1.jpg: Output in format A6 of the file hep4l0np.pdf, see
hep4l0n1. ps / txt / pdf / jpg

hep4: TUB-test chart hep4; Relationship between brightness B*T
and luminance LT as function of sample viewing angle phi
for surround luminances La=(300, 1000, 200, 40) cd/m^2



Figure hep5l0n1.jpg: Output in format A6 of the file hep5l0np.pdf, see
hep5l0n1. ps / txt / pdf / jpg

hep5: TUB-test chart hep5; Relationship between brightness B*T
and luminance LT as function of sample viewing angle phi
for surround luminances La=(1000, 200, 40, 8) cd/m^2



Figure hep6l0n1.jpg: Output in format A6 of the file hep6l0np.pdf, see
hep6l0n1. ps / txt / pdf / jpg

hep6: TUB-test chart hep6; Relationship between brightness B*T
and luminance LT as function of sample viewing angle phi
for surround luminances La=(1500, 300, 30, 3) cd/m^2



Figure hep7l0n1.jpg: Output in format A6 of the file hep7l0np.pdf, see
hep7l0n1. ps / txt / pdf / jpg

hep7: TUB-test chart hep7; Formulae HAULAB, Haubner (1980)
and CIELAB (ISO/CIE 11664-4), log & lin [lightness L*,
threshold delta_Y, sensitivity delta_Y/Y, contrast Y/delta_Y]



Figure hep8l0n1.jpg: Output in format A6 of the file hep8l0np.pdf, see
hep8l0n1. ps / txt / pdf / jpg

hep8: TUB-test chart hep8; Formulae HAULAB, Haubner (1980)
and IECsRGB (IEC 61966-2-1), log & lin [lightness L*,
threshold delta_Y, sensitivity delta_Y/Y, contrast Y/delta_Y]



Figure hep9l0n1.jpg: Output in format A6 of the file hep9l0np.pdf, see
hep9l0n1. ps / txt / pdf / jpg

hep9: TUB-test chart hep9; Formulae HAULAB, Haubner (1980)
and colour difference TUBsRGB 2025, log & lin [lightness L*,
threshold delta_Y, sensitivity delta_Y/Y, contrast Y/delta_Y]

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about colour test charts, colorimetric calculations, standards, and publications, see
indexAE.html in English, indexAG.html in German.

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