Opencv C++：在应用色彩映射表之前使用图像的光标显示像素值

#include <opencv2/opencv.hpp>
#include <iostream>

using namespace cv;
using namespace std;

void onMouse(int event, int x, int y, int flags, void* param)
{
    Mat* image = static_cast<Mat*>(param);
    if (event == EVENT_LBUTTONDOWN)
    {
        Vec3b pixel = image->at<Vec3b>(y, x);
        cout << "Pixel value at (" << x << ", " << y << "): ";
        cout << "B: " << static_cast<int>(pixel[0]) << ", ";
        cout << "G: " << static_cast<int>(pixel[1]) << ", ";
        cout << "R: " << static_cast<int>(pixel[2]) << endl;
    }
}

int main()
{
    Mat image = imread("image.jpg");
    if (image.empty())
    {
        cout << "Failed to load image!" << endl;
        return -1;
    }

    namedWindow("Image");
    setMouseCallback("Image", onMouse, &image);

    imshow("Image", image);
    waitKey(0);

    return 0;
}