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+--- Thread: cut some values (/Thread-cut-some-values)
cut some values - djibb - 03-08-2022
Hi all,
i world like to 'cut', i.e. put to 0 some values above a treshold value.
Something like : if pixel value > 130 -> 0
The idea is to make some astronomical masks to remove noise. (erase signa, then substract noise)
How do I do this ? From scripts ?
RE: cut some values - tmanni - 03-09-2022
You can do this with the Threshold filter:
Ensure your image is 8bit integer (menu Image -> Precision)
then menu Colors -> Threshold...
- set the left input to 0
- set the right input to 130
- in Blending Options, set the Mode to Multiply