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bound_video.cpp
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bound_video.cpp
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#include "opencv2/opencv.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/core.hpp"
#include "iostream"
using namespace cv;
using namespace std;
RNG rng(12345);
int main(int, char**)
{
VideoCapture cap(0); // open the default camera
// cap.open("./EP03.mp4");
if(!cap.isOpened()) // check if we succeeded
return -1;
Mat edges;
namedWindow("edges",1);
vector<vector<Point>> contours;
vector<Vec4i> hierarchy;
for(;;)
{
Mat frame;
cap >> frame; // get a new frame from camera
Scalar color = Scalar(rng.uniform(0,255),rng.uniform(0,255),rng.uniform(0,255));
cvtColor(frame, edges, cv::COLOR_RGB2GRAY);
GaussianBlur(edges, edges, Size(7,7), 1.5, 1.5);
Canny(edges, edges, 0, 30, 3);
// threshold(edges,edges,0,255,cv::THRESH_OTSU);
// imshow("edges", edges);
findContours(edges,contours,hierarchy,cv::RETR_TREE,cv::CHAIN_APPROX_SIMPLE,Point(0,0));
Mat drawing = Mat::zeros(edges.size(),CV_8UC3);
for(size_t i = 0; i < contours.size(); i++)
{
Scalar color = Scalar(rng.uniform(0,255),rng.uniform(0,255),rng.uniform(0,255));
drawContours(drawing,contours,i,color,1,8,vector<Vec4i>(),0,Point());
}
imshow("result",drawing);
if(waitKey(30) >= 0)
break;
}
// the camera will be deinitialized automatically in VideoCapture destructor
return 0;
}