local threshold (?)

I was trying to use “local normalization” or “Simple local Constrast”: to generate “local threshold” but it doesn’t look good and the threshold cuts a lot there is a way to achieve this in G’MIC?

Show and tell. Please give examples.


Image

threshold

equalize + threshold
But the result is not very good

Are you looking for edge detection?

Yes. but the dark planes get like noise. I thought maybe there was something similar in gmic

Try afre_cleantext or afre_edge. The former default settings.

The latter default settings with negate.

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