#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
#include <opencv2/imgproc/imgproc.hpp>

using namespace cv;
using namespace std;


int main(int argc, char** argv) {
	std::string fileName("testImage.jpg");

	if (argc > 1) {
		fileName = argv[1];
	}

	Mat image = imread(fileName, cv::IMREAD_COLOR);

	Mat grey_image, tresh, canny_output, contours, drawing;

	if (image.empty()) {
		std::cout << "Could not find or open the image." << std::endl;
		exit(-1);
	}
	else
	{
		//oryginal
		imshow("Oryginal image", image);

		//greay
		cv::cvtColor(image, grey_image, CV_BGR2GRAY);
		imshow("GreyScale image", grey_image);

		//treshold
		int threshold_value = 150;
		int threshold_type = 3;
		int const max_value = 255;
		int const max_BINARY_value = 255;
		threshold(grey_image, tresh, threshold_value, max_BINARY_value, threshold_type);
		imshow("Treshholding", tresh);

		//EDGES
		Canny(grey_image, canny_output, 100, 200, 3);
		imshow("Canny Edges", canny_output);
	}


	cv::waitKey(0);

	return 0;
}