====== Pixel and Screen Tools ======

===== Screenruler =====
  sudo apt install screenruler

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Helps to measure pixels on a display. If you set your physical resolution correctly, you can also measure in millimeters. 

===== GPick =====
Get colours of your screen. 
  sudo apt install gpick

==== Usage ====
Click on one of the 6 hexagons from the top left, and then move the cursor to a pixel, you want to get the colour from, and then hit the **space bar**. 
If the source colour is noisy, you can add **averaging filters** with different weight curves. This is called "oversample" and "falloff". 
On the right side in the list you can **rename** your colours

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{{tag>linux software english tools}}