[Insight-users] Efficiently comparing segmentation results

[Sergio Vera]

In addition to what Nicholas said, label manipulation in ITK is explained in
this insight journal article:

http://www.insight-journal.org/browse/publication/176

<http://www.insight-journal.org/browse/publication/176>(those filters are
now part of the standard ITK package)

regards

On Wed, Dec 8, 2010 at 8:41 PM, Nicholas Tustison <ntustison at gmail.com>wrote:

> Hi Neal,
>
> Would this help?
>
> http://www.insight-journal.org/browse/publication/707
>
> Nick
>
> On Dec 8, 2010, at 2:22 PM, Neal R. Harvey wrote:
>
> > I am trying to write some code with which I can efficiently compare
> segmentation results with
> > a known ground truth. There are several papers that describe interesting
> metrics for doing this.
> > A common theme is finding intersection between segments.
> > There seems to be most of the functionality within ITK for doing this,
> but I haven't been able to
> > figure out how to do it effectively/efficiently.
> > I want to be able to go through each region in a segmented image (i.e.
> the pixels that have the same
> > value "i" in that image) and calculate the number of pixels within that
> region that intersect with
> > each region in a ground truth image (i.e. the pixels that have the same
> value "j" in that image).
> > I don't want to have to go through every pixel in the image and test to
> see if it is value "i"
> > or "j", but want to have some way of limiting my processing to only those
> pixels that have the
> > required values.
> > I am sure that this should be possible within ITK, I just haven't been
> able to figure it out.
> > If anyone has any suggestions, it would be very much appreciated.
> >
> > Cheers
> >
> > Harve
> >
> > --
> > HARVE (Neal R. Harvey)           Email: harve at lanl.gov
> > ISR-2                            Phone: 505 667 9077
> > Los Alamos National Laboratory   Fax: 505 664 0362
> > Los Alamos, NM 87545, USA        Mail Stop: D-436
> > The generation of random numbers is too important to be left to chance.
> >
> > _____________________________________
> > Powered by www.kitware.com
> >
> > Visit other Kitware open-source projects at
> > http://www.kitware.com/opensource/opensource.html
> >
> > Kitware offers ITK Training Courses, for more information visit:
> > http://www.kitware.com/products/protraining.html
> >
> > Please keep messages on-topic and check the ITK FAQ at:
> > http://www.itk.org/Wiki/ITK_FAQ
> >
> > Follow this link to subscribe/unsubscribe:
> > http://www.itk.org/mailman/listinfo/insight-users
>
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
>



-- 
Sergio Vera

 Alma IT Systems
 C/ Vilana, 4B, 4º 1ª
 08022 Barcelona
 T. (+34) 932 380 592
 www.alma3d.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20101209/59972845/attachment-0001.htm>