mitk::convolution Namespace Reference

Functions
itk::Array< double >	wrap1d (itk::Array< double > kernel)
	Function that wraps the kernel. More...
itk::Array< double >	zeropadding1d (itk::Array< double > unpaddedSpectrum, int paddedDimension)
	Fuction for zeropadding (adding zeros) of an Array/vnl_vector, so that is has size paddedDimensions. More...
itk::Array< double >	unpadAndScale (itk::Array< double > convolutionResult, int initialDimension)
	Follow up function after back transformation from fourier space bwd_transform. removes padding and scales (transformed values have to be divided by transformation dimensions) More...
void	prepareConvolution (const itk::Array< double > &kernel, const itk::Array< double > &spectrum, itk::Array< double > &preparedKernel, itk::Array< double > &preparedSpectrum)
	Convinience function for preparing 2 array for convolution with each other. Takes both arrays of type itk::Array, zeropadds them to the sum of their sizes and wraps the one specified as kernel. Returns them as vnl_vector<vcl_complex<double> >, ready to be entered in fwd_transform. More...

Function Documentation

prepareConvolution()

void mitk::convolution::prepareConvolution ( const itk::Array< double > &  kernel, const itk::Array< double > &  spectrum, itk::Array< double > &  preparedKernel, itk::Array< double > &  preparedSpectrum  )

inline

Convinience function for preparing 2 array for convolution with each other. Takes both arrays of type itk::Array, zeropadds them to the sum of their sizes and wraps the one specified as kernel. Returns them as vnl_vector<vcl_complex<double> >, ready to be entered in fwd_transform.

Definition at line 96 of file mitkConvolutionHelper.h.

References zeropadding1d().

unpadAndScale()

itk::Array<double> mitk::convolution::unpadAndScale ( itk::Array< double >  convolutionResult, int  initialDimension  )

inline

Follow up function after back transformation from fourier space bwd_transform. removes padding and scales (transformed values have to be divided by transformation dimensions)

Definition at line 76 of file mitkConvolutionHelper.h.

wrap1d()

itk::Array<double> mitk::convolution::wrap1d ( itk::Array< double >  kernel )

inline

Function that wraps the kernel.

Some typedefs concerning data structures needed for vnl_fft_1d, which has vnl_vector< vcl_complex< double > > as output typ of the forward transformation fwd_transform. Input is of type vnl_vector< vcl_complex< T > > but since itk::Array is derived from vnl_vector, this works as well

Definition at line 35 of file mitkConvolutionHelper.h.

zeropadding1d()

itk::Array<double> mitk::convolution::zeropadding1d ( itk::Array< double >  unpaddedSpectrum, int  paddedDimension  )

inline

Fuction for zeropadding (adding zeros) of an Array/vnl_vector, so that is has size paddedDimensions.

Parameters

unpaddedSpectrum
paddedDimension	Dimensions that the Array should have after padding (convolution dimensions)

Remarks

dim = Dimensions of padded image --> PaddedDimension

m dimensions of larger image

n dimensions of image to be padded --> InitialDimension

Definition at line 54 of file mitkConvolutionHelper.h.

Referenced by prepareConvolution().