[ITK-users] Binary Contour with outliers

Fri Jan 26 03:04:09 EST 2018

Dear Jared,
thanks for your question !

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--

On 26 January 2018 at 00:56, Becksfort, Jared
<Jared.Becksfort at stjude.org> wrote:
> Hello,
>
> I am having some difficulty overlaying boolean masks onto Nifti images. The code below is basically what is shown here (which does work for me when I use the images on the page):. https://itk.org/ITKExamples/src/Filtering/ImageFusion/OverlayLabelMapOnTopOfAnImage/Documentation.html
>
> The differences that I can see are that I am using 3 dimensions and Nifti float input rather than 2D images of the same pixel and file types (8-bit PNG) in the example.
>
> Can someone please tell me what I have done wrong?  The output image is garbled beyond recognition.
>
> Thanks,
> Jared
>
> const unsigned int Dimension = 3;
>
> typedef float PixelType;
> typedef unsigned char LabelType;
>
> typedef itk::Image< PixelType, Dimension > ImageVolumeType;
> typedef itk::Image< LabelType, Dimension > ContourVolumeType;
>
> typedef itk::ImageFileReader<ContourVolumeType> ContourReaderType;
> typedef itk::ImageFileReader< ImageVolumeType >  ReaderType;
>
> ReaderType::Pointer reader = ReaderType::New();
> reader->SetFileName( infile1 );
>
> ContourReaderType::Pointer labelReader = ContourReaderType::New();
> labelReader->SetFileName(infile2);
>
> typedef itk::LabelObject< LabelType, Dimension > LabelObjectType;
> typedef itk::LabelMap< LabelObjectType > LabelMapType;
>
> typedef itk::LabelImageToLabelMapFilter< ContourVolumeType, LabelMapType > ConverterType;
> ConverterType::Pointer converter = ConverterType::New();
> converter->SetInput( labelReader->GetOutput() );
>
> typedef itk::LabelMapOverlayImageFilter< LabelMapType, ImageVolumeType > FilterType;
> FilterType::Pointer filter = FilterType::New();
> filter->SetInput( converter->GetOutput() );
> filter->SetFeatureImage( reader->GetOutput() );
> filter->SetOpacity(0.5);
>
>
> typedef itk::ImageFileWriter< FilterType::OutputImageType > WriterType;
> WriterType::Pointer writer = WriterType::New();
> writer->SetFileName(outfile);
> writer->SetInput( filter->GetOutput() );
> writer->Update();
>
> On 1/23/18, 4:19 PM, "Insight-users on behalf of Matt McCormick" <insight-users-bounces at itk.org on behalf of matt.mccormick at kitware.com> wrote:
>
>     Hi,
>
>     By running OpeningByReconstructionImageFilter:
>
>       https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fitk.org%2FDoxygen%2Fhtml%2Fclassitk_1_1OpeningByReconstructionImageFilter.html&data=01%7C01%7Cjared.becksfort%40stjude.org%7Ce86b42bd4f52460a362708d562af538f%7C22340fa892264871b677d3b3e377af72%7C0&sdata=qbR%2BtUIsnrSfh01yNV9w94GGa%2FdEA7uXrisa%2BpVyJ0k%3D&reserved=0
>
>     before the binary contour, the smaller objects can be removed.
>
>     HTH,
>     Matt
>
>     On Tue, Jan 23, 2018 at 5:06 PM, Abdelkhalek Bakkari
>     <bakkari.abdelkhalek at hotmail.fr> wrote:
>     > Hi !
>     >
>     > I applied the binary contour filter slice by slice to my binary mask. But
>     > the result for the Axial plane is not satisfied at all since it contains
>     > some outliers.
>     > Please, find attached my binary contour result.
>     > Is there any method to remove the outliers from the contour ?
>     >
>     > Thank you in advance.
>     >
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