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pfstmo_reinhard02.cpp

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/**
 * @file pfstmo_reinhard02.cpp
 * @brief Tone map XYZ channels using Reinhard02 model
 *
 * Photographic Tone Reproduction for Digital Images.
 * E. Reinhard, M. Stark, P. Shirley, and J. Ferwerda.
 * In ACM Transactions on Graphics, 2002.
 *
 * This file is a part of Qtpfsgui package.
 * ---------------------------------------------------------------------- 
 * Copyright (C) 2003-2007 Grzegorz Krawczyk
 * 
 *  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 program 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 program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * ---------------------------------------------------------------------- 
 *
 * @author Grzegorz Krawczyk, <krawczyk@mpi-sb.mpg.de>
 * @author Giuseppe Rota <grota@users.sourceforge.net>
 *
 */

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <QFile>
#include <math.h>
#include "../../Libpfs/pfs.h"
#include "tmo_reinhard02.h"

// using namespace std;

pfs::Frame* pfstmo_reinhard02 (pfs::Frame* inpfsframe, float _key, float _phi, int _num, int _low, int _high, bool _use_scales ) {
      assert(inpfsframe!=NULL);

      pfs::DOMIO pfsio;
      //--- default tone mapping parameters;
      float key = _key;
      float phi = _phi;
      int num = _num;
      int low = _low;
      int high = _high;
      bool use_scales = _use_scales;
      bool temporal_coherent=false;

      pfs::Channel *X, *Y, *Z;
      inpfsframe->getXYZChannels(X,Y,Z);
      assert( X!=NULL && Y!=NULL && Z!=NULL );

      pfs::Frame *outframe = pfsio.createFrame( inpfsframe->getWidth(), inpfsframe->getHeight() );
      assert(outframe != NULL);
      pfs::Channel *Xo, *Yo, *Zo;
      outframe->createXYZChannels( Xo, Yo, Zo );
      assert( Xo!=NULL && Yo!=NULL && Zo!=NULL );\

      // tone mapping
      int w = Y->getCols();
      int h = Y->getRows();
      pfs::Array2D* L = new pfs::Array2DImpl(w,h);
      assert(L!=NULL);

      tmo_reinhard02( Y, L, use_scales, key, phi, num, low, high, temporal_coherent );
      for( int x=0 ; x<w ; x++ ) {
            for( int y=0 ; y<h ; y++ )
            {
                  float scale = (*L)(x,y) / (*Y)(x,y);
                  (*Yo)(x,y) = (*Y)(x,y)*scale;
                  (*Xo)(x,y) = (*X)(x,y)*scale;
                  (*Zo)(x,y) = (*Z)(x,y)*scale;
            }
      }
//    pfs::transformColorSpace( pfs::CS_XYZ, Ro, Go, Bo, pfs::CS_RGB, Ro, Go, Bo );

      delete L;

      return outframe;
}

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