[Insight-users] Extract 2D from 3D

[Cagatay Bilgin]

What is the region covered by labelMapRegion?
Try writing the result of the region of interest filter
to a file to make sure that your problem is not related
to the ROI filter.

Cagatay

On Mon, Oct 15, 2012 at 6:50 AM, wydesenej <wydesenej at gmail.com> wrote:

> Hello.
>
> I need to extract 2D binary image from 3D label map.
> I have got this error while trying to do this task:
>
> */usr/local/include/ITK-4.2/itkMatrix.h:240: itk::ERROR: Singular matrix.
> Determinant is 0.*
>
> I am using this sequence of filters:
>
> /typedef itk::LabelMapToBinaryImageFilter< LabelMapType, BinaryImageType >
> LabelMapToBinaryImageFilterType;
> LabelMapToBinaryImageFilterType::Pointer mapToBinary =
> LabelMapToBinaryImageFilterType::New();
> mapToBinary->SetInput(m_labels[label_id].map);
> mapToBinary->SetBackgroundValue(0);
> mapToBinary->SetForegroundValue(255);
> mapToBinary->Update();
>
> typedef itk::RegionOfInterestImageFilter<BinaryImageType,BinaryImageType>
> RegionOfInterestFilterType;
> RegionOfInterestFilterType::Pointer region =
> RegionOfInterestFilterType::New();
> region->SetInput(mapToBinary->GetOutput());
> region->SetRegionOfInterest(labelMapRegion);
> region->Update();
>
> typedef itk::ExtractImageFilter< BinaryImageType, Binary2ImageType >
> ExtractImageFilterType;
> ExtractImageFilterType::Pointer extract = ExtractImageFilterType::New();
> extract->SetInput(region->GetOutput());
> extract->SetDirectionCollapseToIdentity();
> extract->Update();
> /
>
> Please HELP!
>
>
>
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-- 
Cemal Cagatay Bilgin
Life Sciences Division
Lawrence Berkeley National Lab
MS977, One Cyclotron Road
Berkeley, CA 94720, USA
Email: ccbilgin at lbl.gov <hchang at lbl.gov>
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