[ImageJ-bugs] [Bug 938] Bug in the Intermodes algorithm of threshold

[bugzilla at fiji.sc]

http://fiji.sc/bugzilla/show_bug.cgi?id=938

--- Comment #6 from G. Landini <g.landini at bham.ac.uk> ---
Hi Gadea,
Just answering 1)
ImageJ (Threshold command) takes a 16 or 32 bit images and histograms them in
256 bins. Then resolves the threshold with that histogram. IJ always did this. 

The Auto Threshold (in Fiji, Auto Threshold command) originally thresholded
only 8bit images. Then Johannes modified the code so it can also process images
using the whole histrograms as they are: with 2^8 bins for 8 bits and 2^16 bins
for 16 bits.  The resolution that the Auto Threshold can achieve is therefore
higher than the Threshold command.
So that is why the 2 commands might return different results when analysing
16bit images.

I hope this clarifies it.

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