@staticmethod
def get_landmark_bounds(lmks):
    """
        Function to calculate the landmark bounds

        Parameters
        ----------
        lmks : np.ndarray
            landmarks

        Returns
        -------
        int: min_y
        int: min_x
        int: max_y
        int: max_x
        """
    min_y = lmks[:, (0)].min()
    max_y = lmks[:, (0)].max()
    min_x = lmks[:, (1)].min()
    max_x = lmks[:, (1)].max()
    return min_y, min_x, max_y, max_x
