Default threshold

Dear all,

I’m using ‘default’ threshold to binarise my CT images. I found in ImageJ manual that this threshold is a variation of IsoData algorithm.

I would like to understand a bit more about this function. Can anyone explain why the threshold (average background + average objects)/2) is incremented and the process is repeated until the threshold is larger than the composite average?

Thanks in advance.

BW,
Nia

Did you read the explanations on the Auto Threshold page in the wiki?

Maybe these comments in the source code help:

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