number_recognition.py 文件源码

def _clean_image(self) -> None:
        self._img = cv2.medianBlur(self._img, ksize=3)
        self._img = cv2.adaptiveThreshold(self._img, maxValue=255, adaptiveMethod=cv2.ADAPTIVE_THRESH_GAUSSIAN_C,
                                          thresholdType=cv2.THRESH_BINARY, blockSize=11, C=2)
        self.intermediate_images.append(NamedImage(self._img.copy(), 'Clean Image'))