241201 1L2L0X0H_K2710.KTS/YEylHIN.KTS http://color.li.tu-berlin.de/heys.htm or http://farbe.li.tu-berlin.de/heys.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 heys in English, hgys in German.
For the previous image page, see hexs in English, hgxs in German.
For the next image page, see hezs in English, hgzs 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 heys

Title: Colour metrics according to the Fab(xr), Qab(xr), and Pab(xr) models of colour vision
TUBJND colour vison model: Receptor-response functions Fab/Qab/Pab and derivations F'ab/Q'ab/P'ab for different parameters a,b.
1. Introduction and goals.
2. Colour metrics according to the Fab(xr), Qab(xr), and Pab(xr) models of colour vision.
3. TUBJND colour vison model: receptor-response functions Fab and derivations F'ab for different parameters a,b.
4. Response functions Q/Fab[e^(xr/a) or 10^(xr/a')] with a'=a ln(10).
5. Derivations of the response functions for luminance discrimination.
6. Application and discussion.

The following ten pages hey0 to hey9 of this chapter
show the content with links to the single figures in up to six formats.


Figure hey0l0n1.jpg: Output in format A6 of the file hey0l0np.pdf, see
hey0l0n1. ps / txt / pdf / jpg

hey0: TUB-test chart hey0; Q/Fab(xr)-models for visual responses
Q/Fab(xr) with hyperbel functions e^(xr/a) and 10^(xr/a')
with contants a'=a ln(10) and a^n = a^1,0



Figure hey1l0n1.jpg: Output in format A6 of the file hey1l0np.pdf, see
hey1l0n1. ps / txt / pdf / jpg

hey1: TUB-test chart hey1; Fab(xr)-model for visual responses
Application of hyperbel function tanh on receptor responses
Presentation of the functions and derivation for discrimination



Figure hey2l0n1.jpg: Output in format A6 of the file hey2l0np.pdf, see
hey2l0n1. ps / txt / pdf / jpg

hey2: TUB-test chart hey2; Q/Fab(xr)-models for visual responses
Q/Fab(xr) with hyperbel functions e^(xr/a) and 10^(xr/a')
with contants a'=a ln(10) and a^n = a^1,0



Figure hey3l0n1.jpg: Output in format A6 of the file hey3l0np.pdf, see
hey3l0n1. ps / txt / pdf / jpg

hey3: TUB-test chart hey3; TUBJND model with functions Fab, F'ab
Receptor responses R+, G-, Y+ (left & right), and derivations
R+', G-' (right) for diferent parameters a,b



Figure hey4l0n1.jpg: Output in format A6 of the file hey4l0np.pdf, see
hey4l0n1. ps / txt / pdf / jpg

hey4: TUB-test chart hey4; TUBJND model with functions Fab, F'ab
Receptor responses R+, G-, Y+ (left & right) and amplitude
modulations Y+ & R+'/G-' (left), Y+ & R+/G- (right) for a,b



Figure hey5l0n1.jpg: Output in format A6 of the file hey5l0np.pdf, see
hey5l0n1. ps / txt / pdf / jpg

hey5: TUB-test chart hey5; TUBJND model with functions Fab, F'ab
Receptor responses R+, G-, Y+ (left & right), and derivations
Y+', Y-' (left & right), and R+'/G-' (right) for a,b



Figure hey6l0n1.jpg: Output in format A6 of the file hey6l0np.pdf, see
hey6l0n1. ps / txt / pdf / jpg

hey6: TUB-test chart hey6; Fab(xr)-model for visual responses
derivation of the responses; tanh(xr) with e^xr/a and 10^xr/a'
a'=a ln(10); a^n = a^0,5; 4 x 4 images



Figure hey7l0n1.jpg: Output in format A6 of the file hey7l0np.pdf, see
hey7l0n1. ps / txt / pdf / jpg

hey7: TUB-test chart hey7; Fab(xr)-model for visual responses
derivation of the responses; tanh(xr) with e^xr/a and 10^xr/a'
a'=a ln(10); a^n = a^1,0; 4 x 4 images



Figure hey8l0n1.jpg: Output in format A6 of the file hey8l0np.pdf, see
hey8l0n1. ps / txt / pdf / jpg

hey8: TUB-test chart hey8; Fab(xr)-model for visual responses
derivation of the responses; tanh(xr) with e^xr/a and 10^xr/a'
a'=a ln(10); a^n = a^0,7; 4 x 4 images



Figure hey9l0n1.jpg: Output in format A6 of the file hey9l0np.pdf, see
hey9l0n1. ps / txt / pdf / jpg

hey9: TUB-test chart hey9; Fab(xr)-model for visual responses
derivation of the responses; tanh(xr) with e^xr/a and 10^xr/a'
a'=a ln(10); a^n = a^0,5; 4 x 4 images

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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.