/*Copyright (C) 2007 Matteo Lucarelli - matteolucarelli@altervista.org
* 
*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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
******************************************************************************/

// macros to access pixel value on IplImage (openCV format)
// Author: M.Lucarelli - last version on matteolucarelli.altervista.org

#if !defined(CV_PIXEL_MACRO_INCLUDED)
#define CV_PIXEL_MACRO_INCLUDED

// for 8bit 1ch image (grayscale)
#define CVPIXEL(img,x,y) ((unsigned char*)(img->imageData + img->widthStep*(y)))[x]

// for 8bit 3ch image (BGR)
#define CVPIXELB(img,x,y) ((unsigned char*)(img->imageData + img->widthStep*(y)))[(x)*3]
#define CVPIXELG(img,x,y) ((unsigned char*)(img->imageData + img->widthStep*(y)))[(x)*3+1]
#define CVPIXELR(img,x,y) ((unsigned char*)(img->imageData + img->widthStep*(y)))[(x)*3+2]

#endif // CV_PIXEL_MACRO_INCLUDED