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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSCSLComplexConjugateToRealImageFilter.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 _itkSCSLComplexConjugateToRealImageFilter_txx
#define _itkSCSLComplexConjugateToRealImageFilter_txx
#ifdef USE_SCSL
#include "itkSCSLComplexConjugateToRealImageFilter.h"
#include <iostream>
#include "itkIndent.h"
#include "itkMetaDataObject.h"
namespace itk
{
#ifndef SCSL_INT_T
#define SCSL_INT_T int
#endif
template <typename TPixel, unsigned int Dimension>
void
SCSLComplexConjugateToRealImageFilter<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& outputSize
= outputPtr->GetLargestPossibleRegion().GetSize();
unsigned int num_dims = outputPtr->GetImageDimension();
if(num_dims != outputPtr->GetImageDimension())
return;
unsigned int total_size = 1;
unsigned int tmp_size = 1;
unsigned dims[32];
{
int i;
for(i = 0; i < Dimension; i++)
{
dims[i] = outputSize[i];
total_size *= dims[i];
tmp_size *= (i == 0 ? (dims[i]+2) : dims[i]);
}
for(; i < 32; i++)
{
dims[i] = 1;
}
}
// allocate output buffer memory
outputPtr->SetBufferedRegion( outputPtr->GetRequestedRegion() );
outputPtr->Allocate();
std::complex<TPixel> *in = const_cast<std::complex<TPixel> *>
(inputPtr->GetBufferPointer());
#define MAX2(a,b) ((a) > (b) ? (a) : (b))
#define MAX3(a,b,c) MAX2(MAX2(a,b),c)
/* return type values are undocumented SCSL_INT_T rval; */
SCSL_INT_T isys[2] = {1,0};
#define NF 256
#define NFR 256
if(typeid(TPixel) == typeid(double))
{
double *out = reinterpret_cast<double *>(outputPtr->GetBufferPointer());
double *tmp_buf = reinterpret_cast<double *>(new TPixel[tmp_size]);
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 = */zdfft2d(0, // sign
dims[0], // size of input x
dims[1], // "" y
1.0, // scale
const_cast<std::complex<double> *>
(reinterpret_cast // input
<const std::complex<double> *>
(inputPtr->GetBufferPointer())),
dims[0]/2 + 1, // ldx
tmp_buf, // output
dims[0] + 2,
table, work,isys);
/*return type values are undocumented rval = */zdfft2d(-1, // sign
dims[0], // size of input x
dims[1], // "" y
1.0, // scale
const_cast<std::complex<double> *>
(reinterpret_cast // input
<const std::complex<double> *>
(inputPtr->GetBufferPointer())),
dims[0]/2 + 1, // ldx
tmp_buf, // output
dims[0] + 2,
table, work,isys);
delete [] table;
delete [] work;
}
break;
case 3:
{
double *work = new double[dims[1] + 4 * dims[2]];
double *table = new double[(dims[0] + 256) +
(2 * dims[1] + 256) +
(2 * dims[2] + 256)];
/*return type values are undocumented rval = */zdfft3d(0, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<std::complex<double> *>
(reinterpret_cast // input
<const std::complex<double> *>
(inputPtr->GetBufferPointer())),
(dims[0]/2+1),
dims[1],
tmp_buf,
dims[0]+2,
dims[1],
table,work,isys);
/*return type values are undocumented rval = */zdfft3d(-1, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<std::complex<double> *>
(reinterpret_cast // input
<const std::complex<double> *>
(inputPtr->GetBufferPointer())),
(dims[0]/2+1),
dims[1],
tmp_buf,
dims[0]+2,
dims[1],
table,work,isys);
delete [] table;
delete [] work;
}
break;
default:
break;
}
for(int k = 0; k < dims[2]; k++)
{
for(int j = 0; j < dims[1]; j++)
{
for(int i = 0; i < dims[0]; i++)
out[i + (dims[0] * j) + ((dims[0] * dims[1]) * k)] =
#if 1
tmp_buf[i + ((dims[0]+2)*j) + (((dims[0]+2) * dims[1]) * k)];
#else
tmp_buf[i + (dims[0]*j) + ((dims[0] * dims[1]) * k)];
#endif
}
}
delete [] tmp_buf;
}
else if(typeid(TPixel) == typeid(float))
{
float *out = reinterpret_cast<float *>(outputPtr->GetBufferPointer());
float *tmp_buf = reinterpret_cast<float *>(new TPixel[tmp_size]);
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 = */csfft2d(0, // sign
dims[0], // size of input x
dims[1], // "" y
1.0, // scale
const_cast<std::complex<float> *>
(reinterpret_cast // input
<const std::complex<float> *>
(inputPtr->GetBufferPointer())),
dims[0]/2 + 1, // ldx
tmp_buf, // output
dims[0] + 2,
table, work,isys);
/*return type values are undocumented rval = */csfft2d(-1, // sign
dims[0], // size of input x
dims[1], // "" y
1.0, // scale
const_cast<std::complex<float> *>
(reinterpret_cast // input
<const std::complex<float> *>
(inputPtr->GetBufferPointer())),
dims[0]/2 + 1, // ldx
tmp_buf, // output
dims[0] + 2,
table, work,isys);
delete [] table;
delete [] work;
}
break;
case 3:
{
float *work = new float[dims[1] + 4 * dims[2]];
float *table = new float[(dims[0] + 256) +
(2 * dims[1] + 256) +
(2 * dims[2] + 256)];
/*return type values are undocumented rval = */csfft3d(0, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<std::complex<float> *>
(reinterpret_cast // input
<const std::complex<float> *>
(inputPtr->GetBufferPointer())),
(dims[0]/2+1),
dims[1],
tmp_buf,
dims[0]+2,
dims[1],
table,work,isys);
/*return type values are undocumented rval = */csfft3d(-1, // sign
dims[0], // size of input
dims[1], // ""
dims[2], // ""
1.0, // scale
const_cast<std::complex<float> *>
(reinterpret_cast // input
<const std::complex<float> *>
(inputPtr->GetBufferPointer())),
(dims[0]/2+1),
dims[1],
tmp_buf,
dims[0]+2,
dims[1],
table,work,isys);
delete [] table;
delete [] work;
}
break;
default:
break;
}
for(int k = 0; k < dims[2]; k++)
{
for(int j = 0; j < dims[1]; j++)
{
for(int i = 0; i < dims[0]; i++)
out[i + (dims[0] * j) + ((dims[0] * dims[1]) * k)] =
#if 1
tmp_buf[i + ((dims[0]+2)*j) + (((dims[0]+2) * dims[1]) * k)];
#else
tmp_buf[i + (dims[0]*j) + ((dims[0] * dims[1]) * k)];
#endif
}
}
delete [] tmp_buf;
}
ImageRegionIterator<TOutputImageType> it(outputPtr,
outputPtr->GetLargestPossibleRegion());
while(!it.IsAtEnd())
{
it.Set(it.Value() / total_size);
++it;
}
}
template <class TPixel, unsigned int Dimension>
bool
SCSLComplexConjugateToRealImageFilter<TPixel,Dimension>::
FullMatrix()
{
return false;
}
template <typename TPixel, unsigned int Dimension>
void
SCSLComplexConjugateToRealImageFilter<TPixel,Dimension>::
PrintSelf(std::ostream& os,Indent indent) const
{
}
}
#endif
#endif
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