File:TwibrightLinksTestCard.png

Summary

Description

This is the test card Twibright Links web browser is shipped with since 2001, when it was equipped with graphics capability. The white circle facilitates aspect ratio adjustment. The large color fields are for gamma calibration. With proper calibration, the splits in the middle of the color fields blend together. The wedge somewhat helps setting the correct brightness position to prevent black cutoff of pedestal. The smaller patterned squares contain maximum spatial frequency and 1/2 maximum spatial frequency white-black patterns. They can be used to diagnose problems with insufficient display bandwidth.

The test card has been designed by Karel Kulhavy, the author of the graphical core of Twibright Links.
Date
Source Own work
Author Karel 'Clock' Kulhavy
Permission
(Reusing this file)		 It's my own work.

Licensing

GNU head 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.
w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
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  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This licensing tag was added to this file as part of the GFDL licensing update.
Category:CC-BY-SA-3.0-migrated#TwibrightLinksTestCard.pngCategory:License migration completed#TwibrightLinksTestCard.pngCategory:GFDL#TwibrightLinksTestCard.png Category:Test patterns
Category:CC-BY-SA-3.0-migrated Category:GFDL Category:License migration completed Category:Test patterns