/************************************************** * cvCanny：Canny邊緣檢測 **************************************************//*********************************************************************** * 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 "cxcore.h"#include "highgui.h"int main( int argc, char** argv ){  //聲明IplImage指針  IplImage* pImg = NULL;   IplImage* pCannyImg = NULL;  //載入圖像，強制轉化為Gray  if( argc == 2 &&       (pImg = cvLoadImage( argv[1], 0)) != 0 )    {      //為canny邊緣圖像申請空間      pCannyImg = cvCreateImage(cvGetSize(pImg),					  IPL_DEPTH_8U,					  1);      //canny邊緣檢測      cvCanny(pImg, pCannyImg, 50, 150, 3);      //創建窗口      cvNamedWindow("src", 1);      cvNamedWindow("canny",1);            //顯示圖像      cvShowImage( "src", pImg );      cvShowImage( "canny", pCannyImg );	      cvWaitKey(0); //等待按鍵      //銷毀窗口      cvDestroyWindow( "src" );      cvDestroyWindow( "canny" );      //釋放圖像      cvReleaseImage( &pImg );       cvReleaseImage( &pCannyImg );       return 0;    }  return -1;}