ExampleAffineMappingScaleOnly.cpp

Example for affine mapping with images using scale only

Author

MIP

/* 
This file is part of the BIAS library (Basic ImageAlgorithmS).

Copyright (C) 2003, 2004    (see file CONTACTS for details)
  Multimediale Systeme der Informationsverarbeitung
  Institut fuer Informatik
  Christian-Albrechts-Universitaet Kiel


BIAS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

BIAS 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with BIAS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/**
   @example ExampleAffineMappingScaleOnly.cpp
   @relates AffineMapping  
   @brief Example for affine mapping with images using scale only
   @ingroup g_examples
   @author MIP
*/


#include <iostream>
#include <Base/Image/ImageIO.hh>
#include <Base/Image/Image.hh>
#include <Base/Image/ImageConvert.hh>
#include <Image/AffineMapping.hh>

using namespace BIAS;
using namespace std;



int main(int argc, char** argv ) {
  
  if (argc < 2) {
    BIASERR("need 1 image path as param!");
    BIASABORT;
  }
  
  Image<unsigned char> image, scaledImage;
  AffineMapping<unsigned char, unsigned char> mapper;
  
  if (ImageIO::Load(argv[1], image) != 0) {
    BIASERR("ooops! could not load image!");
    BIASABORT;
  }
  
  ImageIO::Save("before_mapping.mip", image);
  
  // scale image
  double s = 2.0;
  scaledImage.Init((unsigned int)rint(image.GetWidth() / s), 
                   (unsigned int)rint(image.GetHeight() / s),
                   image.GetChannelCount());
  mapper.SetAffineTransformation(s,
                                 0.0,
                                 0.0,
                                 s,
                                 0.0,
                                 0.0);
  mapper.Map(image, scaledImage, MapTrilinear);
  
  ImageIO::Save("after_mapping.mip", scaledImage);
  
  return 0;
}