Mat对象的位操作

opencv中可以对Mat对象可以进行位操作，主要有与，非，或，异或操作

具体代码为 1 #include <iostream>

#include <iostream>
#include <opencv2/opencv.hpp>
using namespace cv;
using namespace std;

int main(int args, char** argv)
{
    Mat src = imread("E:/OpenCV/bin/Resource/lena.jpg", IMREAD_UNCHANGED);
    if (src.empty()) {
        printf("could not find image");
        return -1;
    }
    namedWindow("input", WINDOW_AUTOSIZE);
    imshow("input", src);
   
    //图像取反
    Mat reverse;
    bitwise_not(src, reverse);
    imshow("bitwise_not", reverse);

    Mat reverse1;
    Mat mask=Mat::zeros(src.size(),CV_8UC1);
    Mat mask2 = Mat::zeros(src.size(), CV_8UC1);
    int w = src.cols / 2;
    int h = src.rows / 2;
    for (int row = 50; row < h; row++)
    {
        for (int col = 100; col < w; col++)
        {
            mask.at<uchar>(row, col) = 127;
            mask2.at<uchar>(row, col) = 50;
        }
    }
    bitwise_not(src, reverse1,mask);
    imshow("bitwise_not1", reverse1);

    //与操作
    Mat and1;
    bitwise_and(src, src, and1, mask);
    imshow("bitwise_and1", and1);

    //或操作
    Mat or1;
    bitwise_or(src, src, or1, mask);
    imshow("bitwise_or1", or1);

    //异或操作
    Mat xor1;
    bitwise_xor(src, and1, xor1);
    imshow("bitwise_xor1", xor1);
    while (waitKey(50) != 27)
    {

    }
    destroyAllWindows();
    return 0;
}

显示结果为：