Window shape in Auto local Treshold

Hi Everyone!
I have an important question, which are the shapes of the local windows for thresholding in ImageJ?
Because I’ve seen that only Bernsen, Otsu and Phansalkar should implement a local window for thresholding. Is this true? All the other algorithms uses a square window?
if yes, does the radius parameter to be inserted in the local threshold window become the size of a square window?

Thanks a lot!

That is stated in the documentation:


The local window is circular and you can specify its radius.
You will need to modify the code if you want to support square local windows:

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