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A comment on Show HN: Swapping Position and Brightness in Grayscale Images. Parent comment

Re:Show HN: Swapping Position and Brightness in Grayscale Im... by fyrstenberg on Tuesday December 19, 2017 @01:28PM (#15962565)
This type is actually known as a luma waveform histogram:

https://i.imgur.com/Gn4KQTW.png

Source: https://github.com/epistemex/scopes

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