[Insight-users] masking part of an image

[shoosh moosh]

Ok, I added the reader->Update(), but now I'm getting a different error:
Segmentation fault

The program apparently crashes in the for loop. 

I think something might be wrong with lines 64-65, but I'm not sure what.
inputImage=reader1->GetOutput();
inputMaskImage=reader2->GetOutput();

I attached the code again.
Thanks



> Date: Sun, 19 Apr 2009 14:57:47 -0400
> Subject: Re: [Insight-users] masking part of an image
> From: bill.lorensen at gmail.com
> To: babygirl_25 at hotmail.com
> CC: insight-users at itk.org
> 
> Do a reader1->Update() and reader2->Update() before accessing the
> outputs of the reader.
> 
> 2009/4/19 shoosh moosh <babygirl_25 at hotmail.com>:
> > Hi,
> > I wrote up a program that takes as input 2 images - a 3D image, and a 3D
> > binary mask image with 0's in the parts im not interested and 1's in the
> > parts I want to segment out. I want the program to simply multiply each
> > pixel in the original image with the corresponding pixel in the masking
> > image and produce a third image of the same size having only the region
> > specified by 1's in the mask. The code compiles, but when I run it, I get
> > this error:
> >
> > terminate called after throwing an instance of 'itk::ExceptionObject'
> >   what():
> > /home/shoosh/InsightToolkit-3.10.2/Code/IO/itkNrrdImageIO.cxx:951:
> > itk::ERROR: NrrdImageIO(0x8585a50): Write: Error wrapping nrrd for
> > output.nhdr:
> > [nrrd] nrrdWrap_nva:
> > [nrrd] _nrrdSizeCheck: axis 0 size is zero!
> >
> > Can some one tell me how to fix it. the code is attached.
> >
> >
> >
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