std::pair<cv::Point, double> FindMaxInscribedCircle(const std::vector<cv::Point> &poly_contour, const cv::Mat &img)
{
    std::pair<cv::Point, double> circle;
    double radius = -1;

    for (int i = 0; i < img.cols; i += 10) {
        for (int j = 0; j < img.rows; j += 10) {
            double distance = cv::pointPolygonTest(poly_contour, cv::Point(i, j), true);
            if (distance > radius) {
                radius = distance;
                circle.first = cv::Point(i, j);
            }
        }
    }

    circle.second = radius;

    return circle;
}