[Insight-users] masking part of an image

[Bill Lorensen]

Are the input and input mask the same size? Try printing them.
inputImage->Print(std::cout);
inputMaskImage->Print(std::cout);

after the Update's

2009/4/19 shoosh moosh <babygirl_25 at hotmail.com>:
> 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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