[Insight-users] Efficiently comparing segmentation results

[Andriy Fedorov]

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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