[Insight-users] Efficiently comparing segmentation results

[Luis Ibanez]

Hi Neal,

If you find the need to write your own filter,
It will be great if you would share it with the
community by posting it to the Insight Journal.

   http://www.insight-journal.org


     Regards,


           Luis


---------------------------
On Thu, Dec 9, 2010 at 12:32 PM, Neal R. Harvey <harve at lanl.gov> wrote:
> Nick pointed me to that yesterday. I took a look, but it still doesn't
> provide the
> efficiency that I was hoping for. I am hoping that the LabelMap stuff will
> be able
> to help, and I am revisiting that, otherwise I guess I will have to write my
> own
> function to do it.
>
> Andriy Fedorov wrote:
>>
>> Neal, you can also take a look at this publication in Insight Journal:
>>
>> "Introducing Dice, Jaccard, and Other Label Overlap Measures To ITK",
>> Tustison N., Gee J.
>> http://www.insight-journal.org/browse/publication/707
>>
>>
>>>
>>> Message: 6
>>> Date: Thu, 9 Dec 2010 11:28:29 -0500
>>> From: Sajendra <sajendra at gmail.com>
>>> Subject: Re: [Insight-users] Efficiently comparing segmentation
>>>       results
>>> To: "Neal R. Harvey" <harve at lanl.gov>
>>> Cc: insight-users at itk.org
>>> Message-ID:
>>>       <AANLkTikXrc2uYOR1Q+V09UX=DShrp+4zZg==hwwQoDjS at mail.gmail.com>
>>> Content-Type: text/plain; charset=ISO-8859-1
>>>
>>> You could perhaps use Kappa Statistic Metric:
>>>
>>> http://www.itk.org/Doxygen/html/classitk_1_1KappaStatisticImageToImageMetric.html#_details
>>>
>>> It allows you to set the foreground value for the label you are
>>> interested in so you could either run it multiple times, or probably
>>> modify the filter to do exactly what it is you needed.
>>>
>>> On Wed, Dec 8, 2010 at 2:22 PM, Neal R. Harvey <harve at lanl.gov> 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.
>>>>
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>>>
>>> ------------------------------
>>>
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>>>
>>> End of Insight-users Digest, Vol 80, Issue 15
>>> *********************************************
>>>
>>>
>
>
> --
> 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
>