[ITK] ITK Example ShapeOpeningLabelMapFilter

[Jeanna S.]

Hi Timothee,

I'm using the itk:HessianToObjectnessMeasureImageFilter that you suggested.
I was wondering if there is any way for me to view the image on the screen
after it has been run through the filter, and if you have any examples of
the filter working on an image.

Thanks,
Jeanna

On Sun, Aug 7, 2016 at 4:13 PM, Jeanna S. <jeannasheen at gmail.com> wrote:

> Hi Timothee,
>
> Thank you for replying. I will look into these methods.
>
> Jeanna
>
> On Wed, Aug 3, 2016 at 1:59 AM, Timothee Evain <
> tevain at telecom-paristech.fr> wrote:
>
>> Hello Jeanna,
>>
>> I think this will be difficult just with the LabelMap framework.
>> Usually to filter vessels you rely on some measures based on their shape,
>> but in the ShapeLabelObject, the elongation measure is "the ratio of the
>> longest physical size of the region [i.e. the bounding box] on one
>> dimension and its smallest physical size". This is a quite coarse measure,
>> sensitive to rotation, and I doubt it will be useful in your case.
>> Aside from the attribute problem, you also have to detect the vessels
>> prior to filtering them (i.e. getting a binary or a label image of
>> vessels), and the LabelMap framework doesn't do that.
>>
>> I would suggest taking a look at these other methods:
>> -Frangi's vesselness (implemented in itk through these filter :
>> itkHessianToObjectnessMeasureImageFilter or
>> itkHessian3DToVesselnessMeasureImageFilter)
>> -Ranking Orientation Responses of Path Openings, aka RORPO (
>> http://path-openings.github.io/RORPO/)
>> -Fast Marching (itkFastMarchingImageFilter)
>>
>> HTH,
>>
>> Tim
>>
>> ----- Mail original -----
>> De: "Jeanna S." <jeannasheen at gmail.com>
>> À: community at itk.org
>> Envoyé: Mercredi 3 Août 2016 03:08:42
>> Objet: [ITK] ITK Example ShapeOpeningLabelMapFilter
>>
>> Hello,
>>
>> I am trying to process the attached image using the
>> ShapeOpeningLabelMapFilter for the Insight Toolkit . The image is of a
>> retina, and I want to use the image filter to remove the blood vessels from
>> the picture (the blood vessels are the long, skinny, branching lines). I
>> was wondering if the example code for the ShapeOpeningLabelMapFilter ( here
>> ) would be able to do this with a little modification, and if so, which
>> attribute would be the most useful to identify and remove the blood vessels.
>>
>> Thanks in advance.
>>
>>
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>
>
>
> --
> when the rich wage war, it's the poor who die
>



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when the rich wage war, it's the poor who die
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