Posted by
Michael Schmid on
Oct 20, 2017; 9:04am
URL: http://imagej.273.s1.nabble.com/64-bits-and-32-bits-tp5019568p5019570.html
Hi Guillaume,
there should be absolutely no difference between the results obtained
with the 32-bit and 64-bit versions of Java. All calculations are done
with the same accuracy, regardless of the Java version.
If you see a difference, it could be:
- different protocols or other differences how different people work
- different versions of plugins or macros used
- different settings of ImageJ preferences (Edit>Options>Reset restores
them to the defaults)
- different settings of preferences used by some plugin (not only the
ImageJ core, also plugins can save settings in IJ_Prefs.txt. In case of
doubt, copy the IJ_Prefs.txt to the other computers (usually in the home
directory in a .imagej hidden folder, on Macs in the user's
Library/Preferences)
- maybe some settings file of a plugin, if there is one
- different versions of ImageJ (Help>Update ImageJ)
- very unlikely, a bug that is effective only for your 64-bit system or
only for the 32-bit systems.
(for my feeling, the most likely points are at the top, the least likely
at the bottom)
Michael
________________________________________________________________
On 20/10/2017 10:23, ULMANN Guillaume wrote:
> Hello,
>
> We use ImageJ to quantify the muscle surface area of our patients at the third lumbar vertebra.
> I use a 64bits version of ImageJ but some of my colleagues use a 32 bits version and our results, for a same image, differ of at least 25 cm2, even if I do the reading on both computers.
> Does anyone know where that problem comes from and what version I should trust?
>
> Kind regards,
>
> Guillaume Ulmann
> Praticien Attaché
> Service de Biochimie
> Hôpital Cochin - HUPC - APHP
>
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