text: from camera_calibrator import CameraCalibrator
  import numpy as np
  import cv2
  import pickle
  import copy
  from glob import glob
  
  def pmat(mat):
      '''Print matrix
      '''
      print(np.round(mat, 3))
  
  if __name__ == "__main__":
      calib = CameraCalibrator(board_shape=(6, 7), tile_side=0.10, apriltag_families="tag36h10")
      image = cv2.imread("data/amplitude.png", cv2.IMREAD_GRAYSCALE)
      a = calib.get_apriltag_center(image)
      print(a)