输入一张包含文字内容的图像文件，其中的文字数字，并输出到txt文件中

def recognize_text(img):
  """Recognize text in the image.
  Args:
    img: The input image.
  Returns:
    Text in the image.
  """
  img = img.convert('L')
  image = img.resize((200, 80))
  image = np.array(image)

  # 二值化
  threshold = 160
  table = []
  for i in range(256):
      if i < threshold:
          table.append(0)
      else:
          table.append(1)

  image = image.point(table, '1')

  # Normalize the image to 0 and 1.
  image = image * (1.0 / 255.0)

  # 黑白反转
  image = 1 - image


  # 切割图片
  image = image.reshape([1, 80, 200, 1])
  image = image.astype(np.float32)
  # Predict.
  out_