OpenCV && C++ 10 - Invert Images

Code

/*
作者：郑大峰
时间：2019年09月23日
环境：OpenCV 4.1.1 + VS2017
内容：Invert Images
*/

#include "pch.h"
#include <iostream>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

int main()
{
    Mat image = imread("claudia.png");

    if (image.empty())
    {
        cout << "Could not open or find the image" << endl;
        cin.get();
        return -1;
    }

    //inverted method 1
    Mat image_inverted;
    image_inverted = ~image;

    //inverted method 2
    Mat image_inverted2;
    image_inverted2 = Scalar(255, 255, 255) - image;

    //create the window
    namedWindow("claudia.png", WINDOW_AUTOSIZE);
    namedWindow("claudia_inverted.png", WINDOW_AUTOSIZE);
    namedWindow("claudia_inverted2.png", WINDOW_AUTOSIZE);

    //show the inverted image
    imshow("claudia.png", image);
    imshow("claudia_inverted.png", image_inverted);
    imshow("claudia_inverted2.png", image_inverted);

    waitKey(0); // Wait for any key stroke

    destroyAllWindows(); //destroy all open windows

    return 0;
}

Result