[Insight-users] Error In segmented region size by using itkRelabelComponentImageFilter.

[yasser salman]

Hi Miller ..,

 i got it i forget () in GetOut at 
rcfilter->SetInput(connectedThreshold->GetOutput);

sorry for this.., thanx all..,,
yasser..\

--- yasser salman <yass71 at yahoo.com> wrote:
> 
> hi Miller .., 
> thanx for ur reply but i'm acutally never use
> itkRelabelComponentImageFilter before , so i'm sure
> about it's input and output, also how can i get the
> size of the segmented region ( or labeled region) by
> using this filter
> so i try this code , for sure need a modification
> coz
> i had this error message:  
> 
> " error C2664: 'void __thiscall
> itk::ImageToImageFilter<class itk::Image<unsigned
> short,3>,class itk::Image<unsigned short,3>
> >::SetInput(const class itk::Image<unsigned short,3>
> *)' : cannot convert parameter
>  1 from 'class itk::Image<unsigned short,3>
> *(unsigned
> int)' to 'const class itk::Image<unsigned short,3>
> *'
>         Context does not allow for disambiguation of
> overloaded function"
> 
> 
> 
>  typedef unsigned short   InputPixelType;
>  typedef float        InternalPixelType;
>  typedef unsigned short   SegmentedPixelType;
> 
>   typedef itk::Image< InputPixelType, 3 >        
> InputImageType;
>   typedef itk::Image< InternalPixelType, 3>      
> InternalImageType;
>   typedef itk::Image< SegmentedPixelType, 3 >    
> SegmentedImageType;
> 
> 
>   typedef itk::ConnectedThresholdImageFilter< 
> 			InternalImageType, SegmentedImageType >
> ConnectedFilterType;
>   
>   typedef itk::ImageToVTKImageFilter<
> SegmentedImageType >  
> 			ITK2VTKConnectorFilterType;
> 
>   typedef itk::VTKImageToImageFilter< InputImageType
>  
>   >  
>             VTK2ITKConnectorFilterType;
> 
>   typedef
>
itk::RelabelComponentImageFilter<SegmentedImageType,SegmentedImageType>
> RelabelImageFilter;
>   ReaderType::Pointer reader = ReaderType::New();
> 
> 
> rcfilter->SetInput(connectedThreshold->GetOutput);
> rcfilter->Update();
>   ITK2VTKconnector->SetInput(rcfilter
> ->GetOutput());
>  
>
ITK2VTKconnector->GetImporter()->SetDataScalarTypeToUnsignedChar();
> 
> thanx 
> 
> yasser s.,
> 
> --- "Miller, James V (Research)"
> <millerjv at crd.ge.com>
> wrote:
> > You could use the RelabelComponentImageFilter. 
> > Given a segmented image, 
> > it relabels it such that label 1 is the largest
> > object, label 2 is the next
> > largest object, etc.  Once the relabeling has been
> > performed, you can query 
> > the size of a labelled object in terms of number
> of
> > pixels or volume.
> > 
> > It is a bit of an overkill for the output of the
> > ConnectedThreshold.  We
> > could add a similar API to the segmentation
> > algorithms. By having the
> > capability in another filter, we have factored out
> > the capability so it can
> > used on the output 
> > of any of the segmentation algorithms.
> > 
> > Jim
> > 
> > 
> > 
> > -----Original Message-----
> > From: yasser salman [mailto:yass71 at yahoo.com]
> > Sent: Monday, April 12, 2004 1:53 PM
> > To: insight-users at itk.org
> > Cc: Luis Ibanez
> > Subject: [Insight-users] segmented region size..
> > 
> > 
> > hi all  .., 
> > how can i get the region size  (or No. of pixels)
> > after segmentation ,
> > the code below give me the whole voulme size 256 x
> > 256
> > x19  i need only the segmented region .., 
> > connectedThreshold->Update(); 
> > ImageType::ConstPointer image  =
> > connectedThreshold->GetOutput();
> > ImageType::RegionType   region =
> > image->GetBufferedRegion();
> > ImageType::SizeType     size   = region.GetSize();
> > 
> > 
> > thanx ,, 
> > yasser
> > 
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> 
> 
> 	
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