[Insight-users] to divide images
David Llanos
gva02 at elai.upm.es
Thu, 29 Apr 2004 19:20:27 +0200
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Hi all,
I am looking for classes and methods to divide a binary image in several =
binary images, in function of the I number of objects that the original =
binary image has. For example, of the image binar.png, to obtain four =
images like uno.jpg.
I have gotten the first requirement for this objective that is to label =
this objects, by means of the following code:
-------------------------------------------------------------------------=
-------------------------------------------------------------------------=
------------
.....
xorfilter->SetInput1( grindpeak->GetOutput() );
xorfilter->SetInput2( binaryDilate->GetOutput() );
imgEsperBWsin->SetInput( xorfilter->GetOutput() );
imgEsperBWsin->Update();
std::cout << "Numero de iteraciones: " << =
grindpeak->GetNumberOfIterationsUsed() << " .....bordes borrados" << =
std::endl;
std::cout << "Imagen imgEsperBWsin.jpg creada... " << std::endl;
// Etiquetado de la imagen
itkConnectedComponentFilterType::Pointer labeller =3D=20
itkConnectedComponentFilterType::New();
labeller->SetInput( xorfilter->GetOutput() );
labeller->Update();
unsigned long nObjects =3D relabeller->GetNumberOfObjects();
const std::vector<unsigned long> sizeOfObjects =3D =
relabeller->GetSizeOfObjectsInPixels();
std::cout << "Number of objects : " << nObjects << std::endl;
std::vector<unsigned long>::const_iterator it;
int i; =20
for(i =3D 0, it =3D sizeOfObjects.begin(); it !=3D =
sizeOfObjects.end(); ++i, ++it) {=20
std::cout << "Size of object " << i+1 << ": " << (*it) << " pixels" << =
std::endl;
}
-------------------------------------------------------------------------=
-------------------------------------
I have been looking for some relabeller or labeller method (in =
http://www.itk.org/Insight/Doxygen/html/classitk_1_1RelabelComponentImage=
Filter-members.html and in =
http://www.itk.org/Insight/Doxygen/html/classitk_1_1ConnectedComponentIma=
geFilter-members.html) to go keeping the different objects of the image =
in pointers, either to write files or to work with them for separate, =
but I have not found anything with that that to be able to work.
does some form exist of using these classes for my objective, or do I =
have to use another class? In that case, What relabeller or labeller =
method can I use to relate an object labeled with another class?=20
Thanks inadvange and regards,
David.
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<DIV><FONT face=3DArial size=3D2>Hi all,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I am looking for classes and methods to =
divide a=20
binary image in several binary images, in function of the I number of =
objects=20
that the original binary image has. For example, of the image binar.png, =
to=20
obtain four images like uno.jpg.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I have gotten the first requirement for =
this=20
objective that is to label this objects, by means of the following=20
code:</FONT></DIV>
<DIV><FONT face=3DArial=20
size=3D2>----------------------------------------------------------------=
-------------------------------------------------------------------------=
---------------------</FONT></DIV>
<DIV>
<DIV><FONT face=3DArial size=3D2> =20
=
.....</FONT></DIV>
<DIV><FONT face=3DArial size=3D2> xorfilter->SetInput1(=20
grindpeak->GetOutput() );<BR> xorfilter->SetInput2(=20
binaryDilate->GetOutput() );<BR> imgEsperBWsin->SetInput(=20
xorfilter->GetOutput() =
);<BR> imgEsperBWsin->Update();</FONT></DIV>
<DIV><FONT face=3DArial size=3D2> std::cout << "Numero de =
iteraciones: "=20
<< grindpeak->GetNumberOfIterationsUsed() << " =
.....bordes=20
borrados" << std::endl;<BR> std::cout << =
"Imagen=20
imgEsperBWsin.jpg creada... " << std::endl;</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>// Etiquetado de la=20
imagen<BR> itkConnectedComponentFilterType::Pointer labeller =3D=20
<BR> itkConnectedComponentFilterType::New();<BR> labeller=
->SetInput(=20
xorfilter->GetOutput() =
);<BR> labeller->Update();</FONT></DIV>
<DIV><FONT face=3DArial size=3D2><BR>unsigned long nObjects =3D=20
relabeller->GetNumberOfObjects();<BR> const =
std::vector<unsigned=20
long> sizeOfObjects =3D =
relabeller->GetSizeOfObjectsInPixels();</DIV>
<DIV><FONT face=3DArial size=3D2> std::cout << "Number of =
objects : "=20
<< nObjects << std::endl;<BR> std::vector<unsigned=20
long>::const_iterator it;<BR> int i; <BR> for(i =
=3D 0, it=20
=3D sizeOfObjects.begin(); it !=3D sizeOfObjects.end(); ++i,=20
++it) { <BR> std::cout << "Size of object " =
<<=20
i+1 << ": " << (*it) << " pixels" <<=20
std::endl;<BR> }</FONT></DIV>
<DIV><FONT face=3DArial=20
size=3D2>----------------------------------------------------------------=
----------------------------------------------</FONT></DIV>
<DIV> </DIV>
<DIV>I have been looking for some relabeller or labeller method =
(in <A=20
href=3D"http://www.itk.org/Insight/Doxygen/html/classitk_1_1RelabelCompon=
entImageFilter-members.html">http://www.itk.org/Insight/Doxygen/html/clas=
sitk_1_1RelabelComponentImageFilter-members.html</A>=20
and in <A=20
href=3D"http://www.itk.org/Insight/Doxygen/html/classitk_1_1ConnectedComp=
onentImageFilter-members.html">http://www.itk.org/Insight/Doxygen/html/cl=
assitk_1_1ConnectedComponentImageFilter-members.html</A>)=20
to go keeping the different objects of the image in pointers, either to =
write=20
files or to work with them for separate, but I have not found anything =
with that=20
that to be able to work.</DIV>
<DIV>does some form exist of using these classes for my objective, or do =
I have=20
to use another class? In that case, What relabeller or labeller =
method can=20
I use to relate an object labeled with another class? </DIV>
<DIV> </DIV>
<DIV>Thanks inadvange and regards,</DIV>
<DIV> </DIV>
<DIV>David.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV></FONT></DIV></BODY></HTML>
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