[Insight-users] Input Format

[Ankit Gupta]

So can I convert the dicom file to meta or nrrd inside ITK? Or do I need
some other software to convert the file before reading the converted file
into ITK.

Thanks a lot for your help!

Ankit.

On Mon, Oct 27, 2008 at 2:56 PM, Bill Lorensen <bill.lorensen at gmail.com>wrote:

> If you cast to unsigned char, the cast filter does not do any rescale.
> You should use RescaleIntensityImageFilter to rescale the outputs of
> the filters to the 0,255 range of unsigned char.
>
> As for file formats, both meta and nrrd support floating point pixels.
>
>
>
> On Mon, Oct 27, 2008 at 5:45 PM, Ankit Gupta <gankit at cs.stanford.edu>
> wrote:
> > Hi Bill,
> >
> > Yeah. I cast the image to unsigned char to output it as a png file. But
> that
> > is not my main problem.
> >
> > My main issue is taking the dicom file as input and converting it into
> some
> > format (either using ITK or some other software) so that I can use float
> as
> > the pixel type and apply filters on it. What would this file type be?
> >
> > Ankit.
> >
> > On Mon, Oct 27, 2008 at 2:27 PM, Bill Lorensen <bill.lorensen at gmail.com>
> > wrote:
> >>
> >> Ankit,
> >>
> >> png does not support float images. meta and nrrd support float. You
> >> could cast back to signed short after the processing. Then save as
> >> dicom, meta or nrrd. png does not support signed short.
> >>
> >> Bill
> >>
> >> On Mon, Oct 27, 2008 at 4:51 PM, Ankit Gupta <gankit at cs.stanford.edu>
> >> wrote:
> >> > Hi,
> >> >
> >> > I am relatively new to ITK and my project involves working with dicom
> >> > images, applying image processing filters on them and viewing the
> >> > output.
> >> > Currently, I am trying to apply different blur filters to dicom
> images.
> >> > I
> >> > understand that these filters use float as the pixel type whereas
> dicom
> >> > files have signed short as pixel types. So, what image format should
> be
> >> > used
> >> > (or what format should these dicom images be converted to) so as to
> >> > apply
> >> > filters on them without loss of information?
> >> >
> >> > I tried to take a dicom file as input and apply a resize and then a
> cast
> >> > filter to cast it to a float format. But by viewing the output (as a
> png
> >> > file), I found that a lot of information was lost and the image looked
> >> > very
> >> > different. I am stuck at his point for nearly a week and can't seem to
> >> > find
> >> > any solution. Any help would be greatly appreciated.
> >> >
> >> > Thanks,
> >> > Ankit.
> >> >
> >> > --
> >> > Ankit Gupta
> >> > 1st yr. Grad Student
> >> > Stanford University
> >> >
> >> > _______________________________________________
> >> > Insight-users mailing list
> >> > Insight-users at itk.org
> >> > http://www.itk.org/mailman/listinfo/insight-users
> >> >
> >> >
> >
> >
> >
> > --
> > Ankit Gupta
> > 1st yr. Grad Student
> > Stanford University
> >
>



-- 
Ankit Gupta
1st yr. Grad Student
Stanford University
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