[MINC-users] Display Vi property and float datatype

[Mishkin DERAKHSHAN]

I've been trying to wrap my head around the Display Vl problem for quite
some time. I wrote my explanation of how Vx and Vl are calculated in
Display versus how they are calculated in volume_io, but it would be great
if someone who truly understood what was going on could edit the page.

http://wiki.bic.mni.mcgill.ca/index.php/RealVsVoxelValue

mishkin

On Sat, 27 Jan 2007, Jason Lerch wrote:

> Display (and register) load files as byte files. So the only way to
> work around this problem is to convert your volume to byte first -
> then the values will be consistent across Display and whatever other
> program you are using.
>
> Jason
>
> On 27-Jan-07, at 9:11 PM, Soren Christensen wrote:
>
> > Hi,
> >  I have a MINC file of floats with discrete values 0-2-4-6 etc.
> > When viewed in Display the values appear as 0-1.904 - 4.024 - 5.92
> > etc.
> > The actual values in the file appear to be ok. as they are 2-4-6
> > when loaded
> > into Matlab via EMMA, and also mincmath can identify the values of
> > 2 (and
> > not 1.904) - so it seems to be related to Display and not the
> > actual file
> > content.
> > Is there a way to change how Display calculates the Vi values?
> > It is a problem since I'd like to set a threshold for ROI
> > segmentation in
> > Display.
> >
> > Thanks,
> > Soren
> > _______________________________________________
> > MINC-users at bic.mni.mcgill.ca
> > http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>
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