ex02.c

OPENCV下的入门介绍以及配套源码

/**************************************************
 * cvLoadImage, cvSaveImage, cvCreateImage, cvCopy以及图像显示的例子
 **************************************************/

/***********************************************************************
 * OpenCV example
 * Copyright (C) 2006  Shiqi Yu
 *
 * 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
 ***********************************************************************/


#include "cv.h"
#include "highgui.h"

int main( int argc, char** argv )
{
  IplImage* pImg; //声明IplImage指针

  //载入图像，强制转化为Gray
  if( argc == 3 && 
      (pImg = cvLoadImage( argv[1], 0)) != 0 )
    {

      IplImage* pImg2 = cvCreateImage(cvGetSize(pImg),
				      pImg->depth,
				      pImg->nChannels);
      cvCopy(pImg, pImg2, NULL);

      cvSaveImage(argv[2], pImg2);//把图像写入文件
   
      cvNamedWindow( "Image", 1 );//创建窗口
      cvShowImage( "Image", pImg );//显示图像
      
      cvWaitKey(0); //等待按键
	
      cvDestroyWindow( "Image" );//销毁窗口
      cvReleaseImage( &pImg ); //释放图像
      return 0;
    }

  return -1;
}