third_party/segment/imconv.h

/*
Copyright (C) 2006 Pedro Felzenszwalb

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
*/

/* image conversion */

#ifndef CONV_H
#define CONV_H

#include <climits>
#include "third_party/segment/image.h"
#include "third_party/segment/imutil.h"
#include "third_party/segment/misc.h"

#define RED_WEIGHT 0.299
#define GREEN_WEIGHT 0.587
#define BLUE_WEIGHT 0.114

static image<float> *imageUCHARtoFLOAT(image<uchar> *input) {
  int width = input->width();
  int height = input->height();
  image<float> *output = new image<float>(width, height, false);

  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
      imRef(output, x, y) = imRef(input, x, y);
    }
  }
  return output;
}

#endif