[Insight-users] ITK filter dimensions.

[Simon Alexander]

Fabian,

You can use  itk::ImageIOFactory::CreateImageIO  to create an IO object
that will read metadata about your image, for example it will have a
GetNumberOfDimensions method.

You'll have to specialize your template instantiations on the dimensions
you need then.

e.g., something like:

auto imageIO =
itk::ImageIOFactory::CreateImageIO(filename,itk::ImageIOFactory::ReadMode);
imageIO->SetFileName(filename);
imageIO->ReadImageInformation();
auto dimensions =  imageIO->GetNumberOfDimensions();

switch (dimensions)
{
  case 2:
  SwitchOnComponent<2U>(config, identity, info);
  break;
  case 3:
SwitchOnComponent<3U>(config, identity, info);
break;






On Mon, Mar 3, 2014 at 1:32 PM, Fabian Torres <fabian.trobles at gmail.com>wrote:

> Hi all.
>
> I´m making a filter in ITK for surface enhancement. This filter is an
> itkImageToImageFilter.
>
> Sometimes I will use this filter with 2D images an sometimes with 3D
> images. The thing is that inside this filter I have to use some other itk
> components and I need to specify the number of dimensions  I´m using. So
> this is a problem since itk does not let me use variables to specify this.
>
> I´m using the next for 3D:
>
> typedef itk::Vector< PixelType, 3 > VectorPixelType;
> typedef itk::Vector< VectorPixelType,  3 > MatrixPixelType;
> typedef itk::SymmetricSecondRankTensor< PixelType,  3 > TensorPixelType;
>
> typedef itk::Image< TensorPixelType,  3 > TensorImageType;
>
> but I also need to work with 2D and use the same filter.
>
> Is there a way to know the number of dimensions of the filter input image,
> and declare the typedefs using this value?
>
>
>
> --
> Fabián Torres Robles
> Maestria en Ciencias en Ingeniería Electrónica
> Ingeniería en Sistemas Electrónicos
> tel. 58081280, 0445534661338
> e-mail fabian.trobles at gmail.com, dae.wong at gmail.com
>
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