cpp-opencv-example-1/main.cpp at master · jmoya82/cpp-opencv-example-1 · GitHub

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#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include "helper.hpp"
#include <iostream>

using namespace cv;
using namespace std;

int main(int argc, const char * argv[]) {
    if (argc !=2) {
        cout << "Usage wrong" << endl;
        return -1;
    }

    Mat image;
    image = imread(argv[1], CV_LOAD_IMAGE_COLOR);

    if(! image.data )
    {
        cout <<  "Could not open or find the image" << std::endl ;
        return -1;
    }

    namedWindow( "Display window", WINDOW_AUTOSIZE );
    imshow( "Display window", image );

    waitKey(0);

    Mat image_bw;
    rgb2gray(image, image_bw);

    namedWindow( "Display window - b&w", WINDOW_AUTOSIZE );
    imshow( "Display window - b&w", image_bw);

    waitKey(0);

    Mat image_bin;
    threshold(image_bw, image_bin, 125, 255, THRESH_BINARY);

    namedWindow( "Display window - bin", WINDOW_AUTOSIZE );
    imshow( "Display window - bin", image_bin);

    waitKey(0);

    std::cout << "\nHello, Lena!\n" << endl;
    return 0;
}