获取霍夫线的交点opencv c++

#include <opencv2/opencv.hpp>

using namespace cv;

int main()
{
    // 读取图像
    Mat image = imread("image.jpg", IMREAD_GRAYSCALE);

    // 边缘检测
    Mat edges;
    Canny(image, edges, 50, 150);

    // 进行霍夫线变换
    std::vector<Vec2f> lines;
    HoughLines(edges, lines, 1, CV_PI / 180, 100);

    // 绘制检测到的直线
    Mat result(image.size(), CV_8UC3, Scalar(0, 0, 0));
    for (size_t i = 0; i < lines.size(); i++)
    {
        float rho = lines[i][0];
        float theta = lines[i][1];
        double a = cos(theta);
        double b = sin(theta);
        double x0 = a * rho;
        double y0 = b * rho;
        Point pt1(cvRound(x0 + 1000 * (-b)), cvRound(y0 + 1000 * (a)));
        Point pt2(cvRound(x0 - 1000 * (-b)), cvRound(y0 - 1000 * (a)));
        line(result, pt1, pt2, Scalar(0, 0, 255), 2, LINE_AA);
    }

    // 显示结果
    imshow("Result", result);
    waitKey(0);

    return 0;
}