https://github.com/alexphanna/xbacklight-log

Simple xbacklight wrapper written in Python that changes the brightness logarithmically.
https://github.com/alexphanna/xbacklight-log

linux xbacklight

Last synced: 7 days ago
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Simple xbacklight wrapper written in Python that changes the brightness logarithmically.

• Host: GitHub
• URL: https://github.com/alexphanna/xbacklight-log
• Owner: alexphanna
• Created: 2023-08-25T05:30:52.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-20T00:45:39.000Z (about 1 year ago)
• Last Synced: 2023-10-20T09:49:31.268Z (about 1 year ago)
• Topics: linux, xbacklight
• Language: Python
• Homepage:
• Size: 83 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# xbacklight-log

According to the [Weber-Fechner law](https://en.wikipedia.org/wiki/Weber%E2%80%93Fechner_law) human perception of brightness is logarithmic not linear. By default xbacklight is linear, so adjustment of brightness seems very uneven. xbacklight-log fixes this by wrapping xbacklight and using two seperate brightness values, measured and perceived.

## Math

$$\hat{\text{perceived brightness}} = {\frac{\log_{10}(\text{measured brightness}) + 2}{2}}$$

## Other Helpful Resources

- [@konradstrack](https://github.com/konradstrack)'s [blog](https://konradstrack.ninja/blog/changing-screen-brightness-in-accordance-with-human-perception/)

- [@ericmurphyxyz](https://github.com/ericmurphyxyz)'s [video](https://youtu.be/pGOaSS8nEQA?si=UsH7o5s1bvsRl6RI)