No subject

in the Grayscale image or in a Binary image derived from it.

Could you please clarify ?

Do you have a segmentation of the lungs already ?

Are you looking for a method suitable for segmenting the
lungs from CT ?

If so, you may want to try the ConnectedThresholdImageFilter,
which is a Region growing filter. Just set several seed points
(in index coordinates) inside the lungs an use an upper threshold
around -700 HU.

You will find more detailed methods in the Lung Lesion
Sizing Toolkit:

http://public.kitware.com/LesionSizingKit/index.php/Main_Page

you will find code at:

https://www.kitware.com/svn/LesionSizingKit/trunk/Sandbox/Source/

You may be interested in the class

itkLungWallFeatureGenerator.h<https://www.kitware.com/svn/LesionSizingKit/trunk/Sandbox/Source/itkLungWallFeatureGenerator.h>


-----------------


If you already have a segmentation, then you could simply  use
the RegionOfInterestImageFilter, to extract each one of the
lungs separately from the segmentation.

Run the Dilation on each independent image, and if needed,

merge the images back into the full image, by using the

    PasteImageFilter.

http://www.itk.org/Doxygen/html/classitk_1_1PasteImageFilter.html



  Please let us know if you have further questions,


        Thanks


              Luis


--------------------------------------------------------------------
On Tue, Jun 30, 2009 at 11:17 AM, Raquel Itk <raquelitk at gmail.com> wrote:

> Hi,
> I have an image Dicom of thoracic CT and I want to apply a ball structure
> with the dilate operation. I had read:
> Examples/Filtering/MathematicalMorphologyBinaryFilters.cxx.
>  But I would like to do this, first with the  left lung and then  with the
> right lung. I though to do two images, one only with the left lung and other
> with the right lung.
> I would to know to apply this, only of a part of an image or to indicate
> the coordinate start to do dilate operation. :
> Thanks
> Raquel
>
>
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ITK FAQ at:
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>

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Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<br>Hi Raquel,<br><br>From your email it is not clear is you want to apply =
this dilation<br>in the Grayscale image or in a Binary image derived from i=
t.<br><br>Could you please clarify ?<br><br>Do you have a segmentation of t=
he lungs already ?<br>
<br>Are you looking for a method suitable for segmenting the<br>lungs from =
CT ?<br><br>If so, you may want to try the ConnectedThresholdImageFilter,<b=
r>which is a Region growing filter. Just set several seed points<br>(in ind=
ex coordinates) inside the lungs an use an upper threshold<br>
around -700 HU.<br><br>You will find more detailed methods in the Lung Lesi=
on <br>Sizing Toolkit:<br><br><a href=3D"http://public.kitware.com/LesionSi=
zingKit/index.php/Main_Page">http://public.kitware.com/LesionSizingKit/inde=
x.php/Main_Page</a><br>
<br>you will find code at:<br><br><a href=3D"https://www.kitware.com/svn/Le=
sionSizingKit/trunk/Sandbox/Source/">https://www.kitware.com/svn/LesionSizi=
ngKit/trunk/Sandbox/Source/</a><br><br>You may be interested in the class<b=
r>
<br><a href=3D"https://www.kitware.com/svn/LesionSizingKit/trunk/Sandbox/So=
urce/itkLungWallFeatureGenerator.h">itkLungWallFeatureGenerator.h</a><br><b=
r><br>-----------------<br><br><br>If you already have a segmentation, then=
 you could simply=A0 use<br>
the RegionOfInterestImageFilter, to extract each one of the<br>lungs separa=
tely from the segmentation.<br><br>Run the Dilation on each independent ima=
ge, and if needed,<br><br>merge the images back into the full image, by usi=
ng the <br>
<br>=A0=A0=A0 PasteImageFilter.<br><br><a href=3D"http://www.itk.org/Doxyge=
n/html/classitk_1_1PasteImageFilter.html">http://www.itk.org/Doxygen/html/c=
lassitk_1_1PasteImageFilter.html</a><br><br>=A0<br><br>=A0 Please let us kn=
ow if you have further questions,<br>
<br><br>=A0=A0=A0=A0=A0=A0=A0 Thanks<br><br><br>=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0 Luis<br><br><br>----------------------------------------------=
----------------------<br><div class=3D"gmail_quote">On Tue, Jun 30, 2009 a=
t 11:17 AM, Raquel Itk <span dir=3D"ltr">&lt;<a href=3D"mailto:raquelitk at gm=
ail.com">raquelitk at gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>I have an =
image Dicom of thoracic CT and I want to apply a ball structure with the di=
late operation. I had read: Examples/Filtering/MathematicalMorphologyBinary=
Filters.cxx.<br>
=A0But I would like to do this, first with the=A0 left lung and then=A0 wit=
h the right lung. I though to do two images, one only with the left lung an=
d other with the right lung. <br>
I would to know to apply this, only of a part of an image or to indicate th=
e coordinate start to do dilate operation. : <br>Thanks<br><font color=3D"#=
888888">Raquel<br><br>
</font><br>_____________________________________<br>
Powered by <a href=3D"http://www.kitware.com" target=3D"_blank">www.kitware=
.com</a><br>
<br>
Visit other Kitware open-source projects at<br>
<a href=3D"http://www.kitware.com/opensource/opensource.html" target=3D"_bl=
ank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the ITK FAQ at: <a href=3D"http://w=
ww.itk.org/Wiki/ITK_FAQ" target=3D"_blank">http://www.itk.org/Wiki/ITK_FAQ<=
/a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
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<br></blockquote></div><br>

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