#include <iostream>
#include <opencv2/opencv.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/videoio.hpp>
int main()
{
	cv::VideoCapture camera(0);
	if (!camera.isOpened())
	{
		std::cerr << "[ERROR] Could not open the camera!" << std::endl;
		return 1;
	}
	//cv::namedWindow("Webcam", cv::WINDOW_AUTOSIZE);
	while(true)
	{
		cv::Mat frame;
		camera >> frame;
		cv::imshow("Webcam", frame);
		cv::Mat frame_gray;
		cv::cvtColor(frame, frame_gray, cv::COLOR_BGR2GRAY);
		cv::imshow("gray", frame_gray);
		cv::Mat frame_thresh;
		threshold(frame_gray, frame_thresh, 150, 255, cv::THRESH_BINARY);
		cv::imshow("thresh", frame_thresh);
		std::vector<std::vector<cv::Point>> contours;
std::vector<cv::Vec4i> hierarchy;
		findContours(frame_thresh, contours, hierarchy, cv::RETR_TREE, cv::CHAIN_APPROX_NONE);
		cv::Mat frame_contours = frame.clone();
		drawContours(frame_contours, contours, -1, cv::Scalar(255, 0, 0), 2);
		cv::imshow("contours", frame_contours);
		if (cv::waitKey(30) >= 0){
		
			break;
		}
	}
	return 0;
}