210810 1L2L0X0(C_S), http://farbe.li.tu-berlin.de/CEAS.HTM oder http://color.li.tu-berlin.de/CEAS.HTM
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For this image page with 10 colour series, see CEAS in English, CGAS in German.
For the previous image page, see CEZS in English, CGZS in German.
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For the main page with general information
about the 10 colour series, see CEAI in English, CGAI in German.
For the previous main page, see CEZI in English, CGZI in German.
For the next main page, see CEBI in English, CGBI in German.

For links to the chapter A Colour Image Technology and Colour Management, see
Content list of chapter A: AEA_I in English or AGA_I in German.
Summary of chapter A: AEA_S in English or AGA_S in German.
Example content part AEAI of 26 parts AEAI to AEZI: AEAI in English or AGAI in German.
Example images part AEAS of 26 parts AEAS to AEZS: AEAS in English or AGAS in German.

For links to the chapter B Colour Vision and Colorimetry, see
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.
Example content part BEAI of 26 parts BEAI to BEZI: BEAI in English or BGAI in German.
Example images part BEAS of 26 parts BEAS to BEZS: BEAS in English or BGAS in German.

For links to the chapter C Colour Spaces, Colour Differences, and Line Elements, under work, see
Content list of chapter C: CEA_I in English or CGA_I in German.
Summary of chapter C: CEA_S in English or CGA_S in German.
Example content part CEAI of 26 parts CEAI to CEZI: CEAI in English or CGAI in German.
Example images part CEAS of 26 parts CEAS to CEZS: CEAS in English or CGAS in German.

For links to the chapter D Colour Appearance, Elementary Colours, and Metrics, under work, see
Content list of chapter D: DEA_I in English or DGA_I in German.
Summary of chapter D: DEA_S in English or DGA_S in German.
Example content part DEAI of 26 parts DEAI to DEZI: DEAI in English or DGAI in German.
Example images part DEAS of 26 parts DEAS to DEZS: DEAS in English or DGAS in German.

Chapter C: Colour Spaces, Colour Differences, and Line Elements, Image part CEAS

Title: Line elements, color spaces, and colour thresholds;
Comparison of LABJND and CIELAB line elements.

1. Introduction and goals.
2. Line elements for achromatic colours;
3. Colour spaces and chromatic thresholds;
4. Relation of the laws of Weber-Fechner & Stevens.
5. LABJND-line elements according to CIE 230:219;
6. Comparison with CIELAB-line elements according to ISO/CIE 11664-4.

The following ten pages CEA0 to CEA9 of this chapter
show the content with links to the single figures in up to six formats.


Figure CEA0L0N1.jpg: Output in format A6 of the file CEA0L0NP.PDF, see
CEA0L0N1. PS / TXT / PDF / jpg

CEA0: TUB-test chart CEA0; Colour threholds and colour spaces
Line elements of achromatic colours in black-
white direction for different applications



Figure CEA1L0N1.jpg: Output in format A6 of the file CEA1L0NP.PDF, see
CEA1L0N1. PS / TXT / PDF / jpg

CEA1: TUB-test chart CEA1; Colour threholds and colour spaces
Comparison of scaling, thresholds, and
contrast functions for different applications



Figure CEA2L0N1.jpg: Output in format A6 of the file CEA2L0NP.PDF, see
CEA2L0N1. PS / TXT / PDF / jpg

CEA2: TUB-test chart CEA2; Colour threholds and colour spaces
CIELAB and LABJND colour spaces, and colour differences
for different applications



Figure CEA3L0N1.jpg: Output in format A6 of the file CEA3L0NP.PDF, see
CEA3L0N1. PS / TXT / PDF / jpg

CEA3: TUB-test chart CEA3; Luminance discrimination
Model for achromatic adjacent samples
Relation of Weber-Fechner and Stevens law



Figure CEA4L0N1.jpg: Output in format A6 of the file CEA4L0NP.PDF, see
CEA4L0N1. PS / TXT / PDF / jpg

CEA4: TUB-test chart CEA4; Achromatic thresholds
Luminance thresholds, contrast, and lightness
Experimental data of Lingelbach and Richter



Figure CEA5L0N1.jpg: Output in format A6 of the file CEA5L0NP.PDF, see
CEA5L0N1. PS / TXT / PDF / jpg

CEA5: TUB-test chart CEA5; Threshold, contrast, and lightness
Lineelements, contrast, and lightness
of Weber-Fechner, Stiles, and Vos&Walraven



Figure CEA6L0N1.jpg: Output in format A6 of the file CEA6L0NP.PDF, see
CEA6L0N1. PS / TXT / PDF / jpg

CEA6: TUB-test chart CEA6; LABJND-line elements of CIE 230:2019
log[lightness L*, threshold delta Y
sensitivity (delta Y)/Y and contrast Y/(delta Y)]



Figure CEA7L0N1.jpg: Output in format A6 of the file CEA7L0NP.PDF, see
CEA7L0N1. PS / TXT / PDF / jpg

CEA7: TUB-test chart CEA7; CIELAB-line elements of ISO/CIE 11664-4
log[lightness L*, threshold delta Y
sensitivity (delta Y)/Y and contrast Y/(delta Y)]



Figure CEA8L0N1.jpg: Output in format A6 of the file CEA8L0NP.PDF, see
CEA8L0N1. PS / TXT / PDF / jpg

CEA8: TUB-test chart CEA8; LABJND-line elements of CIE 230:2019
Lightness L*, threshold delta Y
sensitivity (delta Y)/Y and contrast Y/(delta Y)



Figure CEA9L0N1.jpg: Output in format A6 of the file CEA9L0NP.PDF, see
CEA9L0N1. PS / TXT / PDF / jpg

CEA9: TUB-test chart CEA9; CIELAB-line elements of ISO/CIE 11664-4
Lightness L*, threshold delta Y
sensitivity (delta Y)/Y and contrast Y/(delta Y)

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