File:Gamma correction test picture small.png
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Gamma_correction_test_picture_small.png (487 × 186 pixels, file size: 7 KB, MIME type: image/png)
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Summary[edit]
| Description |
English: Gamma Correction test image
Deutsch: Gamma Korrektur Testbild |
| Date | |
| Source | Wikipedia Germany Farbabgleich_Testbild.png |
| Author | Andre Adrian |
The test image needs pixel accurate display. Use Wikipedia picture attribute frame and web browser zoom 100%. The average lightness of the 3%/97% lightness checkered area is integrated in the observers eye to 50% lightness. The non-checkered area lightness is 0.5^(1/gamma). If the system gamma (operating system, graphics card, monitor) is equal to the test image gamma, checkered and non-checkered areas have the same lightness.
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
This file is licensed under the Creative Commons Attribution-Share Alike Attribution-Share Alike 4.0 International, 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:02, 30 November 2018 | | 487 × 186 (7 KB) | AndreAdrian (talk | contribs) | Horizontal lines instead of checkered pattern to avoid distrortion due to monitor rise time. |
| 14:15, 29 November 2018 |  | 488 × 186 (6 KB) | AndreAdrian (talk | contribs) | Use checkered area lightness 3%/97% to avoid non-linearity problems with lightness 0%/100%. | |
| 15:18, 28 November 2018 |  | 487 × 186 (6 KB) | AndreAdrian (talk | contribs) | Add gamma value, Same look as Gamma_correction_test_picture_small.png and Gamma_correction_test_picture_large.png | |
| 20:14, 26 November 2018 |  | 453 × 302 (9 KB) | AndreAdrian (talk | contribs) | test image set for Gamma=2.5 | |
| 00:09, 26 November 2018 |  | 451 × 300 (10 KB) | AndreAdrian (talk | contribs) | Have brightness, contrast area instead of grey Gamma correction area | |
| 17:07, 23 November 2018 |  | 377 × 302 (4 KB) | AndreAdrian (talk | contribs) | No white border. RGB value of 50% non-checkered is now 128, was 127. | |
| 09:53, 22 November 2018 |  | 379 × 304 (3 KB) | AndreAdrian (talk | contribs) | {{Information |description ={{en|1=Gamma Correction test picture}} {{de|1=Gamma Korrektur Testbild}} |date =2018-11-21 |source =Wikipedia Germany Farbabgleich_Testbild.png |author =Andre Adrian }} Display this picture without scaling, that is, use Wikipedia picture attribute frame. |
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