[vtkusers] How to extract vtkImageData from vtkDICOMImageReader

[王君臣]

because when you delete the reader, the imagedate(reader->GetOutput()) has a
reference count 0 , so it is also recycled.
if you want to pertain the output of the reader, you can do either:
1. connect the output to the vtk pipeline
or
2.  vtkImageData * img = vtkImageData::New();
    img->DeepCopy(reader->GetOutput());
    reader->Delete();
    // then you can access to the img...

2010/3/21 Xiaofeng Z <xf10036 at hotmail.com>

> Hello,
>
> I use vtkDICOMImageReader to load a CT series:
>
> vtkDICOMImageReader* reader = vtkDICOMImageReader::New();
> reader.SetDirectoryName("...");
> reader->Update();
> vtkImageData* image = reader->GetOutput();
>
> I was able to load the CT series without issue.  The problem is as soon as
> I call reader::Delete(), the data in "image" appeared to be wiped out.  Is
> there anyway to retain the vtkImageData object without having to keep the
> vtkDICOMImageReader object?
>
> Thanks!
>
> Xiaofeng Zhao
>  <http://www.xzing.org/>
>
>
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