240901 1L2L0X0G_K2710.KTS/YEqlGIN.KTS http://color.li.tu-berlin.de/geqs.htm or http://farbe.li.tu-berlin.de/geqs.htm

For links to the Section 2, Chapter G Equally spaced colour scales for optimal colour-image quality (2025) , see
For this image page with 10 colour series, see geqs in English, ggqs in German.
For the previous image page, see geps in English, ggps in German.
For the next image page, see gers in English, ggrs in German.
For the first image page of the previous chapter F, see feas in English, fgas in German.
For the first image page of the next chapter H (under work), see heas in English, hgas in German.

Content list of chapter G (under work): gea_i in English or gga_i in German.
Summary of chapter G: gea_s in English or gga_s in German.
For the large image page of chapter G with 260 colour series, see ge2s in English or gg2s in German.

Section 2, Chapter G
Equally spaced colour scales for optimal colour-image quality (2025), Image part geqs

Title: Adjacent and separate grey samples for interval scaling;
Series N-W, and dark and light N-W scales;
Four surrounds mean Grey U=N08w, dark Grey D=N04w, light Grey H=N12w, and darker mean Grey d=N06w.
1. Introduction and goals.
2. Visual 3, 5 or 9-step intervall scaling;
3. Visual samples on surrounds U, D, H, and d;
4. Visual numeric specification and calculation of scaling with example.
5. Application for the linearisation of the scales with inverse functions.
Remark: For similar test charts see gels.htm.

The following ten pages geq0 to geq9 of this chapter
show the content with links to the single figures in up to six formats.


Figure geq0l0n1.jpg: Output in format A6 of the file geq0l0np.pdf, see
geq0l0n1. ps / txt / pdf / jpg

geq0: TUB-test chart geq0; Grey samples for intervall scaling
Grey scale of N-W=N00w-N16w=W with Gamma=1, 2, 0,5, and 1,5
with 3 or 5 or 9 steps; surrounds U=N08w, D=N04w, H=N12w, d=N06w



Figure geq1l0n1.jpg: Output in format A6 of the file geq1l0np.pdf, see
geq1l0n1. ps / txt / pdf / jpg

geq1: TUB-test chart geq1; Colour samples for intervall scaling
Grey scale of N-W=N00w-N16w=W with Gamma=1, 2, 0,5, and 1,5
with 3 or 5 or 9 steps; constant surround mean Grey U=N08w



Figure geq2l0n1.jpg: Output in format A6 of the file geq2l0np.pdf, see
geq2l0n1. ps / txt / pdf / jpg

geq2: TUB-test chart geq2; Colour samples for intervall scaling
Evaluation of N-W=N00w-N16w=W with Gamma=1,0, and 2,0
with 3 or 5 or 9 steps; surrounds U=N08w and D=N04w



Figure geq3l0n1.jpg: Output in format A6 of the file geq3l0np.pdf, see
geq3l0n1. ps / txt / pdf / jpg

geq3: TUB-test chart geq3;Colour samples for intervall scaling
Evaluation of N-W=N00w-N16w=W with Gamma=1,0, and 2,0
with 3 or 5 or 9 steps; constant surround U=N08w



Figure geq4l0n1.jpg: Output in format A6 of the file geq4l0np.pdf, see
geq4l0n1. ps / txt / pdf / jpg

geq4: TUB-test chart geq4; Colour samples for intervall scaling
Functions Gamma=1,0 and 2,0 for N-W=N00w-N16w=W
with 3 or 5 or 9 steps; surrounds U=N08w und D=N04w



Figure geq5l0n1.jpg: Output in format A6 of the file geq5l0np.pdf, see
geq5l0n1. ps / txt / pdf / jpg

geq5: TUB-test chart geq5; Colour samples for intervall scaling
Functions Gamma=1,0 and 0,5 for N-W=N00w-N16w=W
with 3 or 5 or 9 steps; surrounds U=N08w und D=N12w



Figure geq6l0n1.jpg: Output in format A6 of the file geq6l0np.pdf, see
geq6l0n1. ps / txt / pdf / jpg

geq6: TUB-test chart geq6; Colour samples for intervall scaling
Functions Gamma=1,0 and 1,5 for N-W=N00w-N16w=W
with 3 or 5 or 9 steps; surrounds U=N08w und D=N10w



Figure geq7l0n1.jpg: Output in format A6 of the file geq7l0np.pdf, see
geq7l0n1. ps / txt / pdf / jpg

geq7: TUB-test chart geq7; Colour samples for intervall scaling
Functions Gamma=1,0 and 2,0 for N-W=N00w-N16w=W
with 3 or 5 or 9 steps; constant surround U=N08w



Figure geq8l0n1.jpg: Output in format A6 of the file geq8l0np.pdf, see
geq8l0n1. ps / txt / pdf / jpg

geq8: TUB-test chart geq8; Colour samples for intervall scaling
Functions Gamma=1,0 and 0,5 for N-W=N00w-N16w=W
with 3 or 5 or 9 steps; constant surround U=N08w



Figure geq9l0n1.jpg: Output in format A6 of the file geq9l0np.pdf, see
geq9l0n1. ps / txt / pdf / jpg

geq9: TUB-test chart geq9; Colour samples for intervall scaling
Functions Gamma=1,0 and 1,5 for N-W=N00w-N16w=W
with 3 or 5 or 9 steps; constant surround U=N08w

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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.

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