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itk::BSplineDownsampleImageFilter< TInputImage, TOutputImage, ResamplerType > Class Template Reference
[Filters that cannot be streamed]

#include <itkBSplineDownsampleImageFilter.h>

List of all members.

Detailed Description

template<class TInputImage, class TOutputImage, class ResamplerType = BSplineResampleImageFilterBase<TInputImage, TOutputImage>>
class itk::BSplineDownsampleImageFilter< TInputImage, TOutputImage, ResamplerType >

Down-samples an image by a factor of 2 using B-Spline filter interpolation.

This class is the public interface for spline down-sampling as defined by the ResamplerType. Requires the use of a resampler type. If in doubt, the basic itkBSplineResampleImageFilterBase should work fine for most applications.

This class may also be used to create a smoother by combining it with the upSampler as in the following example: typedef itk::BSplineResampleImageFilterBase<ImageType2D, ImageType2D> ResamplerType; typedef itk::BSplineDownsampleImageFilter<ImageType2D,ImageType2D,ResamplerType> DownsamplerType2D; typedef itk::BSplineUpsampleImageFilter<ImageType2D,ImageType2D,ResamplerType> UpsamplerType2D;

DownsamplerType2D::Pointer downSampler = DownsamplerType2D::New(); UpsamplerType2D::Pointer upSampler = UpsamplerType2D::New(); int splineOrder = 3; downSampler->SetSplineOrder(splineOrder); upSampler->SetSplineOrder(splineOrder);

downSampler->SetInput(image); downSampler->Update();

upSampler->SetInput( downSampler->GetOutput() ); // output of downSampler is input to upSampler upSampler->Update();

ImageTypePtr2D outImage2 = upSampler->GetOutput(); // outImage2 is the smoothed imaged

Limitations: This class requires specification of a resampler type which may be one of: itkBSplineResampleImageFilterBase, itkBSplineL2ResampleImageFilterBase itkBSplineSplineCenteredResampleImageFilterBase, itkBSplineCenteredL2ResampleImageFilterBase The limitations of these resampler types will apply to this filter. Downsamples only by a factor of 2.

See also:

itkBSplineDownsampleImageFilter

itkBSplineL2ResampleImageFilter

itkBSplineResampleImageFilterBase

itkBSplineCenteredResampleImageFilterBase

itkBSplineCenteredL2ResampleImageFilterBase

Definition at line 83 of file itkBSplineDownsampleImageFilter.h.

Public Types

typedef SmartPointer< const
Self > ConstPointer

typedef Superclass::InputImagePointer InputImagePointer

typedef Superclass::InputImageType InputImageType

typedef Superclass::OutputImageIterator OutputImageIterator

typedef Superclass::OutputImagePointer OutputImagePointer

typedef SmartPointer< Self > Pointer

typedef BSplineDownsampleImageFilter Self

typedef ResamplerType Superclass

Public Member Functions

void GenerateInputRequestedRegion ()

void GenerateOutputInformation ()

virtual const char * GetNameOfClass () const

Static Public Member Functions

static Pointer New ()

Protected Member Functions

BSplineDownsampleImageFilter ()

void EnlargeOutputRequestedRegion (DataObject *output)

void GenerateData ()

virtual ~BSplineDownsampleImageFilter ()