1 #include <opencv2/opencv.hpp>
2 using namespace cv;
3 using namespace std;
4 int main()
5 {
6 Mat bwImg, srcImg, bwImg1;
7 srcImg = imread("b.jpg",0);
8 bwImg = srcImg > 100;
9 vector<vector<Point>> contours;
10 // 查找轮廓，对应连通域
11 findContours(bwImg, contours, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
12 //矩形标记
13 for (size_t i = 0; i < contours.size(); i++)
14 {
15 Rect r = boundingRect(contours[i]);
16 rectangle(bwImg, r, Scalar(200,0,0));
17 }
18
19 imshow("largest region", bwImg);
20 waitKey();
21 return 0;
22 }
