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// -*- c-basic-offset: 4 -*-
/** @file phasecorrelation.cpp
*
* @brief test program to phase correlate two images
*
* @author Pablo d'Angelo <pablo.dangelo@web.de>
*
* $Id: phasecorrelation.cpp 1810 2006-12-30 22:22:09Z dangelo $
*
* This program 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 2 of the License, or (at your option) any later version.
*
* This software 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 this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <config.h>
#include "panoinc.h"
#include "PT/SimpleStitcher.h"
#include "PT/PhaseCorrelation.h"
using namespace vigra;
using namespace PT;
using namespace std;
static void usage(const char * name)
{
cerr << name << " image1 image2 output" << endl
<< " correlates image1 and image2, write output in matlab ascii format" << endl;
}
void loadBImage(vigra::BImage & img, const std::string & filename)
{
// load image
vigra::ImageImportInfo info(filename.c_str());
// FIXME.. check for grayscale / color
img.resize(info.width(), info.height());
if(info.isGrayscale())
{
// import the image just read
importImage(info, destImage(img));
} else {
// convert to greyscale
BRGBImage timg(info.width(), info.height());
importImage(info, destImage(timg));
vigra::copyImage(timg.upperLeft(),
timg.lowerRight(),
RGBToGrayAccessor<RGBValue<unsigned char> >(),
img.upperLeft(),
BImage::Accessor());
}
}
int main(int argc, char *argv[])
{
if (argc !=4) {
usage(argv[0]);
return 1;
}
BImage first;
loadBImage(first,argv[1]);
BImage second;
loadBImage(second, argv[2]);
// create fftw plans, they are the same for all images
fftwnd_plan fftw_p, fftw_pinv;
fftw_p = fftw2d_create_plan(first.width(), first.height(), FFTW_FORWARD, FFTW_ESTIMATE);
fftw_pinv = fftw2d_create_plan(first.width(), first.height(), FFTW_BACKWARD, FFTW_ESTIMATE);
FDiff2D transl = PT::phaseCorrelation(srcImageRange(first),
srcImageRange(second),
fftw_p, fftw_pinv,
argv[3]);
fftwnd_destroy_plan(fftw_p);
fftwnd_destroy_plan(fftw_pinv);
}