[Insight-users] Size : Errata

[Luis Ibanez]

Hi David,

The previous email has an error in the example code.


The line:

   const SizeType size =
          image->GetLargestPossibleRegion();

should be:

   const SizeType size =
           image->GetLargestPossibleRegion().GetSize();



Sorry,


   Luis


---------------------------------------
Luis Ibanez wrote:

> 
> Hi David,
> 
> The size of an image is an array of numbers.
> A 3D image need an array of three numbers
> for describing its size.
> 
> You should use the "SizeType" defined as
> part of the itk::Image type.
> 
> Something like:
> 
> typedef itk::RGBPixel< char >       PixelType;
> typedef itk::Image< PixelType, 3 >  ImageType;
> typedef ImageType::SizeType         SizeType;
> 
> typedef itk::ImageFileReader<
>                         ImageType > ReaderType;
> 
> ReaderType::Pointer reader = ReaderType::New();
> 
> reader->SetFileName("image.hdr");
> reader->Update();
> 
> ImageType::ConstPointer image = reader->GetOutput();
> 
> const SizeType size = image->GetLargestPossibleRegion();
> 
> 
> // At this point you can access the element of the
> // size array.
> 
> 
> std::cout << "Pixels in X = " << size[0] << std::enl;
> std::cout << "Pixels in Y = " << size[1] << std::enl;
> std::cout << "Pixels in Z = " << size[2] << std::enl;
> 
> 
> 
> Regards,
> 
> 
>    Luis
> 
> 
> ----------------------------------
> David Llanos wrote:
> 
>> hi all,
>>  
>> In the first place I request you help in this simple problem: I want 
>> to get the size of a 2D RGB image, already read with ImageFileReader 
>> and kept in the pointer "reader", for later to keep it in a constant 
>> variable.
>>  
>> I attempted something like that, but I don't know the classes of 
>> ImageFileReader exactly
>>  
>>   const unsigned long tam=0;
>>   tam=reader->GetOutput()->GetRequestedRegion().GetSize();
>>  
>>  
> 
> ...
> 
>> thanks in advange.
>>  
> 
> 
> 
> 
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