OpenCV之图像轮廓检测及提取

OpenCV代码功能：检测并画出图像中的轮廓主要函数：cvFindContours、cvDrawContours#include <cv.h>
#include <highgui.h>
#include <cxcore.h>
#include <iostream.h>void main（）
{
int i=0;
int mode=CV_RETR_CCOMP; //the mode of contours
int num_contours=0;
CvScalar ext_color,inn_color;

CvMemStorage*storage=cvCreateMemStorage（0）;
CvSeq*contour=0; IplImage*pimg=NULL;
IplImage*CTImg=NULL;
IplImage*src=cvLoadImage（"test.bmp",-1）; pimg=cvCreateImage（cvGetSize（src）,src->depth,1）;
CTImg=cvCreateImage（cvGetSize（pimg）,IPL_DEPTH_8U,3）;
cvCvtColor（src,pimg,CV_BGR2GRAY）; cvNamedWindow（"source",CV_WINDOW_AUTOSIZE）;
cvNamedWindow（"gray",CV_WINDOW_AUTOSIZE）;
cvNamedWindow（"contours",CV_WINDOW_AUTOSIZE）; cvShowImage（"source",src）;
//cvThreshold（pimg,pimg,200,250,CV_THRESH_BINARY）;
cvErode（pimg,pimg,0,1）;
cvDilate（pimg,pimg,0,1）;
cvCanny（pimg,pimg,2,20,3）;
//cvErode（pimg,pimg,0,2）;
//cvDilate（pimg,pimg,0,1）;
//Find the Contours
mode=CV_RETR_LIST;
num_contours=cvFindContours（pimg,storage,&contour,sizeof（CvContour）,mode,CV_CHAIN_APPROX_NONE）;
cout<<"The number of the contours is :"<<num_contours<<endl;
//Draw the Contours
for （;contour！=0;contour=contour->h_next）
{
inn_color=CV_RGB（rand（）&255,rand（）&255,rand（）&255）;
ext_color=CV_RGB（rand（）&255,rand（）&255,rand（）&255）;
cvDrawContours（CTImg,contour,ext_color,inn_color,1,2,8,cvPoint（0,0））;
} cvShowImage（"gray",pimg）;
cvShowImage（"contours",CTImg）;
cvWaitKey（0）;
cvSaveImage（"Contours.bmp",CTImg）;
cvSaveImage（"Canny.bmp",pimg）; cvReleaseImage（&pimg）;
cvReleaseImage（&CTImg）;
cvReleaseImage（&src）;
cvReleaseMemStorage（&storage）; cvDestroyAllWindows（）;}效果图： --------------------------------------分割线 --------------------------------------Ubuntu Linux下安装OpenCV2.4.1所需包 http://www.linuxidc.com/Linux/2012-08/68184.htmUbuntu 12.04 安装 OpenCV2.4.2 http://www.linuxidc.com/Linux/2012-09/70158.htmCentOS下OpenCV无法读取视频文件 http://www.linuxidc.com/Linux/2011-07/39295.htmUbuntu 12.04下安装OpenCV 2.4.5总结 http://www.linuxidc.com/Linux/2013-06/86704.htmUbuntu 10.04中安装OpenCv2.1九步曲 http://www.linuxidc.com/Linux/2010-09/28678.htm基于QT和OpenCV的人脸识别系统 http://www.linuxidc.com/Linux/2011-11/47806.htm[翻译]Ubuntu 14.04, 13.10 下安装 OpenCV 2.4.9 http://www.linuxidc.com/Linux/2014-12/110045.htm--------------------------------------分割线 --------------------------------------OpenCV的详细介绍：请点这里
OpenCV的下载地址：请点这里本文永久更新链接地址：http://www.linuxidc.com/Linux/2015-01/111965.htm