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* ImageINSA is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ImageINSA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ImageINSA. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QLabel>
#include <QDialog>
#include <QFormLayout>
#include <QDialogButtonBox>
#include <Widgets/ImageListBox.h>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QRadioButton>
#include "IFFTOp.h"
#include "../Tools.h"
#include "../Algorithms/FFT.h"
#include <cmath>
#include <QGroupBox>
#include <QCheckBox>
using namespace std;
using namespace imagein;
IFFTOp::IFFTOp() : DoubleOperation(qApp->translate("Operations", "Inverse Fourier transform").toStdString())
{
}
bool IFFTOp::needCurrentImg() const {
return false;
}
void IFFTOp::operator()(const imagein::Image_t<double>*, const map<const imagein::Image_t<double>*, string>& imgList) {
QDialog* dialog = new QDialog();
dialog->setWindowTitle(qApp->translate("Operations", "Parameters"));
dialog->setMinimumWidth(460);
QVBoxLayout* layout = new QVBoxLayout(dialog);
QGroupBox* groupBox = new QGroupBox(dialog);
QHBoxLayout* groupLayout = new QHBoxLayout(groupBox);
QRadioButton* magButton = new QRadioButton(qApp->translate("IFFTOp","Magnitude/Phase"));
QRadioButton* realButton = new QRadioButton(qApp->translate("IFFTOp", "Real/Imaginary"));
groupLayout->addWidget(magButton);
groupLayout->addWidget(realButton);
layout->addWidget(groupBox);
magButton->setChecked(true);
QWidget* magWidget = new QWidget();
QFormLayout* magLayout = new QFormLayout(magWidget);
ImageListBox_t<double>* magtdImgBox = new ImageListBox_t<double>(dialog, NULL, imgList);
ImageListBox_t<double>* phaseImgBox = new ImageListBox_t<double>(dialog, NULL, imgList);
magLayout->insertRow(0, qApp->translate("IFFTOp", "Magnitude : "), magtdImgBox);
magLayout->insertRow(1, qApp->translate("IFFTOp", "Phase : "), phaseImgBox);
QWidget* realWidget = new QWidget();
QFormLayout* realLayout = new QFormLayout(realWidget);
ImageListBox_t<double>* realImgBox = new ImageListBox_t<double>(dialog, NULL, imgList);
ImageListBox_t<double>* imagImgBox = new ImageListBox_t<double>(dialog, NULL, imgList);
realLayout->insertRow(0, qApp->translate("IFFTOp", "Real part : "), realImgBox);
realLayout->insertRow(1, qApp->translate("IFFTOp", "Imaginary part : "), imagImgBox);
layout->addWidget(magWidget);
layout->addWidget(realWidget);
realWidget->setVisible(false);
QCheckBox* centerBox = new QCheckBox(qApp->translate("IFFTOp", "Source is centered"));
centerBox->setChecked(true);
layout->addWidget(centerBox);
QDialogButtonBox* buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel, Qt::Horizontal, dialog);
QObject::connect(buttonBox, SIGNAL(accepted()), dialog, SLOT(accept()));
QObject::connect(buttonBox, SIGNAL(rejected()), dialog, SLOT(reject()));
QObject::connect(realButton, SIGNAL(toggled(bool)), realWidget, SLOT(setVisible(bool)));
QObject::connect(magButton, SIGNAL(toggled(bool)), magWidget, SLOT(setVisible(bool)));
QDialog::DialogCode code = static_cast<QDialog::DialogCode>(dialog->exec());
if(code!=QDialog::Accepted) {
return;
}
Image* resImg;
if(magButton->isChecked()) {
const Image_t<double>* magnitudeImg = magtdImgBox->currentImage();
const Image_t<double>* phaseImg = phaseImgBox->currentImage();
if(magnitudeImg == NULL || phaseImg == NULL) return;
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unsigned int width = min(nearestUpPower2(magnitudeImg->getWidth()), nearestUpPower2(phaseImg->getWidth()));
unsigned int height = min(nearestUpPower2(magnitudeImg->getHeight()), nearestUpPower2(phaseImg->getHeight()));
unsigned int channels = min(magnitudeImg->getNbChannels(), phaseImg->getNbChannels());
resImg = new Image(width, height, channels);
complex<double>** data = new complex<double>*[width];
for(unsigned int i = 0; i < width; ++i) data[i] = new complex<double>[height];
const unsigned int cw = width/2;
const unsigned int ch = height/2;
for(unsigned int c = 0; c < channels; ++c) {
if(centerBox->isChecked()) {
for(unsigned int j = 0; j < height; ++j) {
for(unsigned int i = 0; i < width; ++i) {
const unsigned int ci = i >= cw ? i - cw : i + cw;
const unsigned int cj = j >= ch ? j - ch : j + ch;
const double magtd = magnitudeImg->getPixel(ci, cj, c);
const double phase = phaseImg->getPixel(ci, cj, c);
const double real = magtd * cos(phase);
const double imag = magtd * sin(phase);
data[i][j] = complex<double>(real,imag);
}
}
}
else {
for(unsigned int j = 0; j < height; ++j) {
for(unsigned int i = 0; i < width; ++i) {
const double magtd = magnitudeImg->getPixel(i, j, c);
const double phase = phaseImg->getPixel(i, j, c);
const double real = magtd * cos(phase);
const double imag = magtd * sin(phase);
data[i][j] = complex<double>(real,imag);
}
}
}
FFT2D(data, width, height, -1);
for(unsigned int j = 0; j < height; ++j) {
for(unsigned int i = 0; i < width; ++i) {
double value = floor(data[i][j].real()+0.5);
value = min(255.0, max(0.0, value));
resImg->setPixel(i, j, c, value);
}
}
else {
const Image_t<double>* realImg = realImgBox->currentImage();
const Image_t<double>* imagImg = imagImgBox->currentImage();
if(realImg == NULL || imagImg == NULL) return;
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unsigned int width = min(nearestUpPower2(realImg->getWidth()), nearestUpPower2(imagImg->getWidth()));
unsigned int height = min(nearestUpPower2(realImg->getHeight()), nearestUpPower2(imagImg->getHeight()));
unsigned int channels = min(realImg->getNbChannels(), imagImg->getNbChannels());
resImg = new Image(width, height, channels);
complex<double>** data = new complex<double>*[width];
for(unsigned int i = 0; i < width; ++i) data[i] = new complex<double>[height];
const unsigned int cw = width/2;
const unsigned int ch = height/2;
for(unsigned int c = 0; c < channels; ++c) {
if(centerBox->isChecked()) {
for(unsigned int j = 0; j < height; ++j) {
for(unsigned int i = 0; i < width; ++i) {
const unsigned int ci = i >= cw ? i - cw : i + cw;
const unsigned int cj = j >= ch ? j - ch : j + ch;
const double real = realImg->getPixel(ci, cj, c);
const double imag = imagImg->getPixel(ci, cj, c);
data[i][j] = complex<double>(real,imag);
}
}
}
else {
for(unsigned int j = 0; j < height; ++j) {
for(unsigned int i = 0; i < width; ++i) {
const double real = realImg->getPixel(i, j, c);
const double imag = imagImg->getPixel(i, j, c);
data[i][j] = complex<double>(real,imag);
}
}
}
FFT2D(data, width, height, -1);
for(unsigned int j = 0; j < height; ++j) {
for(unsigned int i = 0; i < width; ++i) {
double value = floor(data[i][j].real()+0.5);
value = min(255.0, max(0.0, value));
resImg->setPixel(i, j, c, value);
}
this->outImage(resImg, qApp->translate("IFFTOp", "DFT-reconstructed image").toStdString());