Re: Marking areas of like pixel values.

Posted by Gabriel Landini on
URL: http://imagej.273.s1.nabble.com/Marking-areas-of-like-pixel-values-tp5019664p5019666.html

On Monday, 6 November 2017 16:33:39 GMT [hidden email] wrote:
> I am taking pictures with a 12 bit camera in .FIT file format. When I open
> them in Fiji it says they are 32 bit and therefore it won't perform auto
> thresholding on them because it says this only works for 8 or 16 bit
> images. Why and how does it change my 12 bit image into something that
> it is not?

I think you might be trying the Auto Threshold or Auto Local Threshold
commands. Those do not work on 32 bit images.
You could try the original Adjust Threshold command, that would rebin the
image into a smaller greyscale space and threshold it.

As to your other question, I have no idea. There are no 12 bit images in IJ,
so perhaps the importer, as a safety measure, might be opening them as 32bit.
Cheers

Gabriel

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