[MINC-users] getting a specific voxel value from a minc file

[Rupert Brooks]

Works like a charm,

thanks
Rupert

On 10/16/07, D. Louis Collins <louis.collins at mcgill.ca> wrote:
> Rupert,
>
> register (and Display) load in data as bytes.  if your original data
> was short, then the value will be truncated to the discrete range of
> a byte.
>
> If you want a specific value, try:
>
>        mincextract -start 10,20,30 -count 1,1,1 volume.mnc
>
> By default, it will spit out the value of the voxel as a double.
> check the options for other possibilities.
>
> -Louis
>
> On Oct 16, 2007, at 8:49 AM, Rupert Brooks wrote:
>
> > Hi,
> >
> > I really hope im not missing something too obvious here.. but im
> > stuck.
> >
> > In the process of checking some data importing, im trying to retrieve
> > the actual value of a specific voxel in a minc file.  I am using
> > register - i enter a specific world coordinate or voxel coordinate in
> > the appropriate fields and read off the value stored there from the
> > field below (beside the "Filter" button)
> >
> > According to my understanding, to do what i want, i should set the
> > filter to "Nearest".
> >
> > Unfortunately the reported value seems off - it seems to be always
> > filtered. In fact, no matter what i set the filter to, the value is
> > the same.  The minc volume was created by hand, and contains only
> > integer values.  Register is reporting values that are non integer.
> >
> > I'm using  the build of register from  here.
> > http://packages.bic.mni.mcgill.ca/cygwin/
> >
> > So, my questions are - am i using the tool wrong?  Is there another,
> > easier way to do this (A command line solution would be ideal)?  If i
> > rebuild a newer version of register - no small project because i am on
> > Windows - will this problem go away?
> >
> > Thanks
> > Rupert B.
> > --
> > --------------------------------------------------------------
> > Rupert Brooks
> > McGill Centre for Intelligent Machines (www.cim.mcgill.ca)
> > Ph.D Student, Electrical and Computer Engineering
> > http://www.cyberus.ca/~rbrooks
> > _______________________________________________
> > MINC-users at bic.mni.mcgill.ca
> > http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>
> _______________________________________________
> MINC-users at bic.mni.mcgill.ca
> http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>


-- 
--------------------------------------------------------------
Rupert Brooks
McGill Centre for Intelligent Machines (www.cim.mcgill.ca)
Ph.D Student, Electrical and Computer Engineering
http://www.cyberus.ca/~rbrooks