solver.py 文件源码

def PrepareImage(image):
  """Converts color image to black and white"""
  # work on gray scale
  bw = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)

  # remove noise, preserve edges
  bw = cv2.bilateralFilter(bw, 9, 75, 75)

  # binary threshold
  bw = cv2.adaptiveThreshold(bw, 255, cv2.ADAPTIVE_THRESH_GAUSSIAN_C,
                             cv2.THRESH_BINARY, 11, 2)
  return bw