Hi!
I have a DICOM image and now want to go through all pixels to get their values.
How can I do this best?
In the region grower from the tutorial, pixel values are read like this:
// convert world coordinates to image indices
imageGeometry->WorldToIndex( pointsIterator.Value(), seedIndex);
// get the pixel value at this point
TPixel currentPixelValue = itkImage->GetPixel( seedIndex );
Is it possible to iterate ALL pixels like this, not just some selected points?
Another possibility would be the ImagePixelReadAccessor, which seems to be what
I need, but I don't know how to use it.
According to the class reference
(http://docs.mitk.org/2012.12/classmitk_1_1ImagePixelReadAccessor.html), there
should be a method GetPixelByWorldCoordinates, but it doesn't seem to recognize
it, asit says "identifier not found". I tried it as follows, just to test it
out:
template < typename TPixel, unsigned int VImageDimension >
void MITKPluginTest2::ItkImageProcessing( itk::Image< TPixel, VImageDimension
>* itkImage )
{
float coords[3]={100,100,100};
mitk::Point3D position(coords);
TPixel p=mitk::ImagePixelReadAccessor<float,
3>::GetPixelByWorldCoordinates(position);
}
This results in 32 errors, all looking like this, with different data types
instead of int and VImageDimension 2 or 3:
6>..\..\..\..\myProjectTwo\Plugins\org.company.myplugin2\src\internal\MITKPluginTest2.cpp(160)
: error C2027: use of undefined type
'mitk::ImagePixelReadAccessor<TPixel,VDimension>'
6> with
6> [
6> TPixel=float,
6> VDimension=3
6> ]
6>
..\..\..\..\myProjectTwo\Plugins\org.company.myplugin2\src\internal\MITKPluginTest2.cpp(148)
: see reference to function template instantiation 'void
MITKPluginTest2::ItkImageProcessing<int,2>(itk::Image<TPixel,VImageDimension>
*)' being compiled
6> with
6> [
6> TPixel=int,
6> VImageDimension=2
6> ]
6>..\..\..\..\myProjectTwo\Plugins\org.company.myplugin2\src\internal\MITKPluginTest2.cpp(160)
: error C3861: 'GetPixelByWorldCoordinates': identifier not found
Can someone help me, please?
Best Regards,
Martin
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