ExampleToPlanar.cpp

Example for converting an interleaved to a planar image

, ImageConvert

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 ExampleToPlanar.cpp
   @relates ImageBase, ImageConvert
   @brief Example for converting an interleaved to a planar image 
   @ingroup g_examples
   @author MIP
*/

#include <Base/Image/ImageBase.hh>
#include <Base/ImageUtils/ImageDraw.hh>
#include <Base/Image/ImageConvert.hh>
#include <Base/Image/ImageIO.hh>

using namespace BIAS;
using namespace std;

int main()
{
  const unsigned int w = 640;
  const unsigned int h = 400;
  Image<unsigned char> im(w, h, 3);
  Image<unsigned char> plan1;
  Image<unsigned char> planLoaded;
  unsigned char* pData = im.GetImageData();
  //fill data
  for(unsigned int i=0; i<(w*h); i++)
  {
    //store lowest 24bits of i in rgbchannels
    unsigned char ti = (unsigned char)(i%256); //get lsbyte
    pData[i*3+0] = ti;
    pData[i*3+1] = (unsigned char)((i>>8)%256);
    pData[i*3+2] = (unsigned char)((i>>16)%256);
  }
 ImageIO::Save("inter0.mip", im);
  ImageConvert::ToPlanar(im,plan1);
  if(!plan1.IsPlanar()||(plan1.IsInterleaved()))
  {
    cout<<"image planar flags inconsistend (plan1)"<<endl;
    return -2;
  }
  ImageConvert::ToInterleaved(plan1,im);
  pData = im.GetImageData(); //data pointer is now a different one...
  for(unsigned int i=0; i<(w*h); i++)
  {
    //store lowest 24bits of i in rgbchannels
    unsigned char ti = (unsigned char)(i%256); //get lsbyte
    if((pData[i*3+0] != ti)||(pData[i*3+1] != ((i>>8)%256))
       ||(pData[i*3+2] != ((i>>16)%256)))
    {
      cout<<"image data changed after conversion"<<endl;
      return -1;
    }
  }
  if(im.IsPlanar()||(!im.IsInterleaved()))
  {
    cout<<"image planar interleaved flags inconsistend"<<endl;
    return -2;
  }
  if(!plan1.IsPlanar()||(plan1.IsInterleaved()))
  {
    cout<<"image planar interleaved flags inconsistend (plan1)"<<endl;
    return -2;
  }
  ImageIO::Save("planar1.mip", plan1);
  ImageIO::Load("planar1.mip",planLoaded);
  if(!planLoaded.IsPlanar()||(planLoaded.IsInterleaved()))
  {
    cout<<"loaded image not planar anymore..."<<endl;
    return -3;
  }
  ImageConvert::ToInterleaved(planLoaded,planLoaded);

  pData = im.GetImageData(); //data pointer is now a different one...
  for(unsigned int i=0; i<(w*h); i++)
  {
    //store lowest 24bits of i in rgbchannels
    unsigned char ti = (unsigned char)(i%256); //get lsbyte
    if((pData[i*3+0] != ti)||(pData[i*3+1] != ((i>>8)%256))
        ||(pData[i*3+2] != ((i>>16)%256)))
    {
      cout<<"image data changed after conversion"<<endl;
      return -1;
    }
  }

  if(planLoaded.IsPlanar()||(!planLoaded.IsInterleaved()))
  {
    cout<<"image planar interleaved flags inconsistend"<<endl;
    return -4;
  }
  ImageIO::Save("inter1.mip", planLoaded); //inplace converted ...

  return 0;
}