[ITK] [ITK-users] Using ImageFileReader iteratively
Matt McCormick
matt.mccormick at kitware.com
Tue Feb 2 21:17:04 EST 2016
Hi Gib,
It may be related to what is happening in "...".
Try
im2->DisconnectPipeline();
after
im2 = reader->GetOutput();
This will disassociate the output image from the reader object, and
the reader will create a new output image in the next iteration of the
loop.
HTH,
Matt
On Tue, Feb 2, 2016 at 6:48 PM, Gib Bogle <g.bogle at auckland.ac.nz> wrote:
> I am reading a set of 2D image files, like this:
>
> typedef itk::Image<unsigned char,2> ImageType2; // 2D image
> ImageType2::Pointer im2;
> unsigned char *p2;
>
> typedef itk::ImageFileReader<ImageType2> FileReaderType;
> FileReaderType::Pointer reader = FileReaderType::New();
>
> for (z=0; z<z2-z1-1; z++) {
> ... // make frame_file
> printf("frame_file: %s\n",frame_file);
> reader->SetFileName(frame_file);
> try
> {
> reader->Update();
> printf("did reader->update\n");
> }
> catch (itk::ExceptionObject &e)
> {
> std::cout << e << std::endl;
> return 2;
> }
>
> im2 = reader->GetOutput();
> printf("got im2\n");
> ...
> }
>
> This reads the first 2D file, but the next time through the loop it crashes
> while executing reader->Update().
> What am I doing wrong?
>
> Thanks
> Gib
>
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