text: Title: Detected short number
  Body: Hello. I have image:
  ![cell](https://user-images.githubusercontent.com/20105785/137730636-f16acbe0-31a4-4fe5-9231-761038b326b7.png)
  but easyOCR do not work.
  I try use `detect` with diferrent parameters, but method return empty.
  then i tried to make my simple-detector:
  ```
       def recognition_number(self, img: np.ndarray) -> str:
          image = self._filtration(img)
          thresh = cv2.adaptiveThreshold(image, 255, cv2.ADAPTIVE_THRESH_GAUSSIAN_C, cv2.THRESH_BINARY_INV, 3, 1)
          cnts, _ = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
          ox = [i[0][0] for i in cnts[0]]
          oy = [i[0][1] for i in cnts[0]]
          data = self.reader.recognize(image, horizontal_list=[[min(ox), max(ox), min(oy), max(oy)]], free_list=[], allowlist="1234567890.,")
          return "".join([el[1] for el in data])
  ```
  this solved the problem and now the number is recognized.
  is it possible to do something with a easyOCR `detect`?