/************************************************** * 輪廓檢測(cè) * 主要函數(shù)： *      cvFindContours *      cvDrawContours **************************************************//*********************************************************************** * 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* pContourImg = NULL;  CvMemStorage * storage = cvCreateMemStorage(0);  CvSeq * contour = 0;  int mode = CV_RETR_EXTERNAL;  if( argc == 3)      if(strcmp(argv[2], "all") == 0)	mode = CV_RETR_CCOMP; //內(nèi)外輪廓都檢測(cè)        //創(chuàng)建窗口  cvNamedWindow("src", 1);  cvNamedWindow("contour",1);  //載入圖像，強(qiáng)制轉(zhuǎn)化為Gray  if( argc >= 2 &&       (pImg = cvLoadImage( argv[1], 0)) != 0 )    {      cvShowImage( "src", pImg );      //為輪廓顯示圖像申請(qǐng)空間      //3通道圖像，以便用彩色顯示      pContourImg = cvCreateImage(cvGetSize(pImg),					  IPL_DEPTH_8U,					  3);      //copy source image and convert it to BGR image      cvCvtColor(pImg, pContourImg, CV_GRAY2BGR);      //查找contour      cvFindContours( pImg, storage, &contour, sizeof(CvContour), 		  mode, CV_CHAIN_APPROX_SIMPLE);    }  else    {      //銷(xiāo)毀窗口      cvDestroyWindow( "src" );      cvDestroyWindow( "contour" );      cvReleaseMemStorage(&storage);      return -1;    }  //將輪廓畫(huà)出      cvDrawContours(pContourImg, contour, 		 CV_RGB(0,0,255), CV_RGB(255, 0, 0), 		 2, 2, 8);  //顯示圖像  cvShowImage( "contour", pContourImg );  cvWaitKey(0);  //銷(xiāo)毀窗口  cvDestroyWindow( "src" );  cvDestroyWindow( "contour" );  //釋放圖像  cvReleaseImage( &pImg );   cvReleaseImage( &pContourImg );   cvReleaseMemStorage(&storage);  return 0;}