图像连通域的标定

来源：互联网发布：日本爱知产业大学排名编辑：程序博客网时间：2024/05/17 08:22
[图片] 图像连通域的标定（OpenCv版）

[代码] [C/C++]代码

view source
print?
01#include "cv.h"
02#include "cxcore.h"
03#include "highgui.h"
04  
05int main( int argc, char** argv )
06{
07    //声明IplImage指针
08    IplImage* pImg = cvLoadImage("e:/black.jpg",0);
09    IplImage* pContourImg = NULL;
10    CvMemStorage * storage = cvCreateMemStorage(0);
11    CvSeq * contour = 0;
12    CvSeq *contmax = 0;
13    int mode = CV_RETR_EXTERNAL;
14    cvShowImage( "src", pImg );
15    //为轮廓显示图像申请空间
16    //3通道图像，以便用彩色显示
17    pContourImg = cvCreateImage(cvGetSize(pImg),
18        IPL_DEPTH_8U,
19        3);
20    //copy source image and convert it to BGR image
21    cvCvtColor(pImg, pContourImg, CV_GRAY2BGR);
22    //查找contour
23    cvFindContours( pImg, storage, &contour, sizeof(CvContour),
24        mode, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));
25    //将轮廓画出   
26    cvDrawContours(pContourImg, contour,
27        CV_RGB(255,0,0), CV_RGB(255, 0, 0),
28        2, 2, 8, cvPoint(0,0));
29    int area,maxArea = 10;//设面积最大值大于10Pixel
30    for(;contour;contour = contour->h_next)
31    {
32        area = fabs(cvContourArea( contour, CV_WHOLE_SEQ )); //获取当前轮廓面积
33        printf("area == %lf\n", area);
34        if(area > maxArea)
35        {
36            contmax = contour;
37            maxArea = area;
38        }
39    }
40    CvRect aRect = cvBoundingRect( contmax, 0 );
41    cvSetImageROI( pContourImg,aRect);
42    //显示图像
43    cvShowImage( "contour", pContourImg );
44    cvSaveImage("e:/contour.jpg",pContourImg);
45    cvWaitKey(0);
46 
47    //销毁窗口
48    cvDestroyWindow( "src" );
49    cvDestroyWindow( "contour" );
50    //释放图像
51    cvReleaseImage( &pImg );
52    cvReleaseImage( &pContourImg );
53    cvReleaseMemStorage(&storage);
54 
55    return 0;
56}