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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSCSLRealToComplexConjugateImageFilter.txx,v $
Language: C++
Date: $Date: 2005-11-04 15:32:53 $
Version: $Revision: 1.3 $
Copyright (c) 2002 Insight Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef _itkSCSLRealToComplexConjugateImageFilter_txx
#define _itkSCSLRealToComplexConjugateImageFilter_txx
#ifdef USE_SCSL
#include "itkSCSLRealToComplexConjugateImageFilter.h"
#include <iostream>
#include "itkIndent.h"
#include "itkMetaDataObject.h"
#include <complex.h>
#include <scsl_fft.h>
namespace itk
{
#ifndef SCSL_INT_T
#define SCSL_INT_T int
#endif
template <class TPixel, unsigned int Dimension>
void
SCSLRealToComplexConjugateImageFilter<TPixel,Dimension>::
GenerateData()
{
// get pointers to the input and output
typename TInputImageType::ConstPointer inputPtr = this->GetInput();
typename TOutputImageType::Pointer outputPtr = this->GetOutput();
if ( !inputPtr || !outputPtr )
{
return;
}
const typename TInputImageType::SizeType& inputSize
= inputPtr->GetLargestPossibleRegion().GetSize();
unsigned int num_dims = inputPtr->GetImageDimension();
if(num_dims != outputPtr->GetImageDimension())
return;
// allocate output buffer memory
outputPtr->SetBufferedRegion( outputPtr->GetRequestedRegion() );
outputPtr->Allocate();
#define MAX2(a,b) ((a) > (b) ? (a) : (b))
#define MAX3(a,b,c) MAX2(MAX2(a,b),c)
unsigned dims[32];
{
int i;
for(i = 0; i < Dimension; i++)
{
dims[i] = inputSize[i];
}
for(; i < 32; i++)
{
dims[i] = 1;
}
}
std::complex<TPixel> *out = outputPtr->GetBufferPointer();
/* return type valus are undocumented SCSL_INT_T rval;*/
SCSL_INT_T isys[2]={1,0};
#define NF 256
#define NFR 256
if(typeid(TPixel) == typeid(double))
{
switch(num_dims)
{
case 1:
case 2:
{
double *table = new double[(dims[0]+NFR) + (2 * dims[1] + NF)];
double *work = new double[dims[0] + 4 * dims[1]];
/*return type values are undocumented rval = */
dzfft2d(0, // sign
dims[0], // size of input x
dims[1], // size of input in y
1.0, // scale
const_cast<double *>
(reinterpret_cast<const double *>
(inputPtr->GetBufferPointer())),
dims[0], // ldx -- number of rows in x array
reinterpret_cast<std::complex<double> *>(out),
dims[0]/2 + 1,
table,
work,
isys);
/*return type values are undocumented rval = */
dzfft2d(1, // sign
dims[0], // size of input x
dims[1], //
1.0, // scale
const_cast<double *>
(reinterpret_cast<const double *>
(inputPtr->GetBufferPointer())),
dims[0], //
reinterpret_cast<std::complex<double> *>(out),
dims[0]/2 + 1,
table,
work,
isys);
delete [] table;
delete [] work;
}
break;
case 3:
{
double *table = new double[(dims[0] + NFR) + (2 * dims[1] + NF) +
(2 * dims[2] + NF)];
double *work = new double[dims[0] + 3 * dims[2]];
/*return type values are undocumented rval = */
dzfft3d(0, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<double *>
(reinterpret_cast<const double *>
(inputPtr->GetBufferPointer())), // input
dims[0], // ldx
dims[1], // ldx2
reinterpret_cast<std::complex<double> *>(out), // output
(dims[0]/2 + 1), // ldy
dims[2], // ldy2
table,work,isys);
/*return type values are undocumented rval = */
dzfft3d(1, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<double *>
(reinterpret_cast<const double *>
(inputPtr->GetBufferPointer())), // input
dims[0], // ldx
dims[1], // ldx2
reinterpret_cast<std::complex<double> *>(out), // output
(dims[0]/2 + 1), // ldy
dims[1], // ldy2
table,work,isys);
delete [] table;
delete [] work;
}
break;
default:
break;
}
}
else if(typeid(TPixel) == typeid(float))
{
switch(num_dims)
{
case 1:
case 2:
{
float *table = new float[(dims[0]+NFR) + (2 * dims[1] + NF)];
float *work = new float[dims[0] + 4 * dims[1]];
/*return type values are undocumented rval = */
scfft2d(0, // sign
dims[0], // size of input x
dims[1], // size of input in y
1.0, // scale
const_cast<float *>
(reinterpret_cast<const float *>
(inputPtr->GetBufferPointer())),
dims[0], // ldx -- number of rows in x array
reinterpret_cast<std::complex<float> *>(out),
dims[0]/2 + 1,
table,
work,
isys);
/*return type values are undocumented rval = */
scfft2d(1, // sign
dims[0], // size of input x
dims[1], //
1.0, // scale
const_cast<float *>
(reinterpret_cast<const float *>
(inputPtr->GetBufferPointer())),
dims[0], //
reinterpret_cast<std::complex<float> *>(out),
dims[0]/2 + 1,
table,
work,
isys);
delete [] table;
delete [] work;
}
break;
case 3:
{
float *table = new float[(dims[0] + NFR) + (2 * dims[1] + NF) +
(2 * dims[2] + NF)];
float *work = new float[dims[0] + 3 * dims[2]];
/*return type values are undocumented rval = */
scfft3d(0, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<float *>
(reinterpret_cast<const float *>
(inputPtr->GetBufferPointer())), // input
dims[0], // ldx
dims[1], // ldx2
reinterpret_cast<std::complex<float> *>(out), // output
(dims[0]/2 + 1), // ldy
dims[1], // ldy2
table,work,isys);
/*return type values are undocumented rval = */
scfft3d(1, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<float *>
(reinterpret_cast<const float *>
(inputPtr->GetBufferPointer())), // input
dims[0], // ldx
dims[1], // ldx2
reinterpret_cast<std::complex<float> *>(out), // output
(dims[0]/2 + 1), // ldy
dims[1], // ldy2
table,work,isys);
delete [] table;
delete [] work;
}
break;
default:
break;
}
}
}
template <class TPixel, unsigned int Dimension>
bool
SCSLRealToComplexConjugateImageFilter<TPixel,Dimension>::
FullMatrix()
{
return false;
}
template <class TPixel, unsigned int Dimension>
void
SCSLRealToComplexConjugateImageFilter<TPixel,Dimension>::
PrintSelf(std::ostream& os,Indent indent) const
{
}
}
#endif
#endif
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