Bagaimana untuk Mensimulasikan Deskewing Mata Menggunakan `warpAffine` OpenCV?

void main()
{
    cv::Mat src = cv::imread("r8fmh.jpg", 1);

    // Points representing the corners of the paper
    vector<Point> not_a_rect_shape;
    not_a_rect_shape.push_back(Point(408, 69));
    not_a_rect_shape.push_back(Point(72, 2186));
    not_a_rect_shape.push_back(Point(1584, 2426));
    not_a_rect_shape.push_back(Point(1912, 291));

    // Debug drawing of the points
    const Point* point = &amp;not_a_rect_shape[0];
    int n = (int)not_a_rect_shape.size();
    Mat draw = src.clone();
    polylines(draw, &amp;point, &amp;n, 1, true, Scalar(0, 255, 0), 3, CV_AA);
    imwrite("draw.jpg", draw);

    // Rotated rectangle around the points
    RotatedRect box = minAreaRect(cv::Mat(not_a_rect_shape));

    // Source and destination vertex points
    Point2f pts[4];
    box.points(pts);

    Point2f src_vertices[3];
    src_vertices[0] = pts[0];
    src_vertices[1] = pts[1];
    src_vertices[2] = pts[3];

    Point2f dst_vertices[3];
    dst_vertices[0] = Point(0, 0);
    dst_vertices[1] = Point(box.boundingRect().width - 1, 0);
    dst_vertices[2] = Point(0, box.boundingRect().height - 1);

    // Affine transform matrix
    Mat warpAffineMatrix = getAffineTransform(src_vertices, dst_vertices);

    // Transformation and output image
    cv::Mat rotated;
    cv::Size size(box.boundingRect().width, box.boundingRect().height);
    warpAffine(src, rotated, warpAffineMatrix, size, INTER_LINEAR, BORDER_CONSTANT);

    imwrite("rotated.jpg", rotated);
}