[Insight-users] ITK filter dimensions.

[Fabian Torres]

Thanks all

For the quick response I manage to do what I wanted using a templated
filter just like Jon said.

What I do was

typedef typename InputImageType::PixelType PixelType;
typedef itk::Vector< PixelType,
itk::GetImageDimension<InputImageType>::ImageDimension > VectorPixelType;
typedef itk::Vector< VectorPixelType,
 itk::GetImageDimension<InputImageType>::ImageDimension > MatrixPixelType;
typedef itk::SymmetricSecondRankTensor< PixelType,
 itk::GetImageDimension<InputImageType>::ImageDimension > TensorPixelType;

typedef itk::Image< TensorPixelType,
 itk::GetImageDimension<InputImageType>::ImageDimension > TensorImageType;

and it worked just Fine.

Thanks again


On Mon, Mar 3, 2014 at 12:45 PM, Jon Haitz Legarreta <
jhlegarreta at vicomtech.org> wrote:

> Dear Fabian,
> you may solve the issue using a templated filter. The
> itk::ImageToImageFilter is templated over its input and output image types,
> which, at the same time, are templated over their pixel type and dimension
> [1].
>
> Thus, if you define your own filter templated over its input/output image
> types (and ideally, inheriting itk's ImageToImageFilter) you'd be able to
> specify the type at execution time, when you read your 2D or 3D (even ND)
> input.
>
> In order to know the pixel type and dimensions of an image at execution
> time, you can get some inspiration from ITK's ReadUnknownImageType example
> [2].
>
> HTH,
> JON HAITZ
>
> [1] http://www.itk.org/Doxygen/html/classitk_1_1Image.html
> [2] http://www.itk.org/Wiki/ITK/Examples/IO/ReadUnknownImageType
>
>
> On 3 March 2014 19:32, 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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>


-- 
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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