查找边界

来源：互联网发布：淘宝手机卡实名流程编辑：程序博客网时间：2024/06/08 07:41

#ifdef _CH_
#pragma package <opencv>
#endif

#pragma comment(lib,"cv.lib")
#pragma comment(lib,"cvcam.lib")
#pragma comment(lib,"cxcore.lib")
#pragma comment(lib,"highgui.lib")

#include <cv.h>
#include <cvcam.h>
#include <cxcore.h>
#include <highgui.h>

void main()
{
IplImage *pImg=NULL;
IplImage *pContourImg=NULL;

CvMemStorage *storage=cvCreateMemStorage(0);
CvSeq *contour=NULL;

int mode=CV_RETR_CCOMP;
//载入图像,强制转化为灰度
pImg=cvLoadImage("1.jpg",CV_LOAD_IMAGE_GRAYSCALE);
assert(pImg!=NULL);

cvNamedWindow("Show_Src",CV_WINDOW_AUTOSIZE);
cvShowImage("Show_Src",pImg);

//cvWaitKey();
pContourImg=cvCreateImage(
    cvGetSize(pImg),
    IPL_DEPTH_8U,
    3);
//复制pImg,并把它转还为灰度图
cvCvtColor(pImg,pContourImg,CV_GRAY2BGR);

//执行查找边缘操作
cvFindContours(
  pImg,
  storage,
  &contour,
  sizeof(CvContour),
  mode,
  CV_CHAIN_APPROX_SIMPLE,
  cvPoint(2,2));

//在pContourImg上画出边界
cvDrawContours(pContourImg,
       contour,
       CV_RGB(0,0,255),
       CV_RGB(255,0,0),
       2,
       2,
       8
       );

//显示查找结果
cvNamedWindow("Show_Dst",CV_WINDOW_AUTOSIZE);
cvShowImage("Show_Dst",pContourImg);

cvWaitKey();

//释放资源
cvReleaseImage(&pImg);
cvReleaseImage(&pContourImg);
cvDestroyWindow("Show_Src");
cvDestroyWindow("Show_Dst");

}