[Insight-users] size of image

[robert tamburo]

Hi John, the image size is of type itk::Size which has array-like operators
(http://www.itk.org/Doxygen/html/classitk_1_1Size.html#details). So you can
do:
unsigned long x = size[0];
unsigned long y = size[1];
unsigned long z = size[2];



On Sat, May 28, 2011 at 10:39 AM, john smith <mkitkinsightuser at gmail.com>wrote:

> Well, is  *image  *a pointer  showing in x,y,z dimension? How could I get
> the value for every dimension separately?
>
> Thanks for your response
>
>
> 2011/5/28 robert tamburo <robert.tamburo at gmail.com>
>
>> image->GetLargestPossibleRegion().GetSize();   which is in your code:
>>
>>   InputImageType::RegionType inputRegion =
>>            reader->GetOutput()->GetLargestPossibleRegion();
>>
>>   InputImageType::SizeType size = inputRegion.GetSize();
>>
>>
>>
>> On Sat, May 28, 2011 at 10:30 AM, john smith <mkitkinsightuser at gmail.com>wrote:
>>
>>> Hello,
>>>
>>> I am using ITK for my project and I have wrote the following code.Could
>>> somebody tell me how can I get the size of my image?
>>>
>>> Thanks in advance
>>>
>>>  typedef unsigned char        InputPixelType;
>>>   typedef unsigned char        OutputPixelType;
>>>
>>>   typedef itk::Image< InputPixelType,  3 >    InputImageType;
>>>   typedef itk::Image< OutputPixelType, 2 >    OutputImageType;
>>>
>>>    typedef itk::ImageFileReader< InputImageType  >  ReaderType;
>>>   typedef itk::ImageFileWriter< OutputImageType >  WriterType;
>>>
>>>   ReaderType::Pointer reader = ReaderType::New();
>>>   WriterType::Pointer writer = WriterType::New();
>>>
>>>   reader->SetFileName( fileName.toStdString()  );
>>>   writer->SetFileName( "2D.png" );
>>>
>>>
>>>   typedef itk::ExtractImageFilter< InputImageType, OutputImageType >
>>> FilterType;
>>>   FilterType::Pointer filter = FilterType::New();
>>>
>>>     reader->Update();
>>>   InputImageType::RegionType inputRegion =
>>>            reader->GetOutput()->GetLargestPossibleRegion();
>>>
>>>   InputImageType::SizeType size = inputRegion.GetSize();
>>>   size[2] = 0;
>>>
>>>   InputImageType::IndexType start = inputRegion.GetIndex();
>>>   const unsigned int sliceNumber = 89;
>>>    start[2] = sliceNumber;
>>>
>>>   InputImageType::RegionType desiredRegion;
>>>   desiredRegion.SetSize( size );
>>>   desiredRegion.SetIndex( start );
>>>
>>>   filter->SetExtractionRegion( desiredRegion );
>>>
>>>   filter->SetInput( reader->GetOutput() );
>>>   writer->SetInput( filter->GetOutput() );
>>>
>>>       try
>>>     {
>>>     writer->Update();
>>>     }
>>>     catch( itk::ExceptionObject & err )
>>>     {
>>>     std::cerr << "ExceptionObject caught !" << std::endl;
>>>     std::cerr << err << std::endl;
>>>     }
>>>
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>>
>
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