def __preprocess_image(self, src_image # type: OpenCV Mat
                          ):
        # type: (...) -> OpenCV Mat
        """ Perform image preprocessing. Typically it is an image resize, 
            then a transpose (HWC -> CHW) if using OpenCV 
            to read the image. Returns preprocessed image (OpenCV Mat if using OpenCV). """
        pass
 Perform image preprocessing. Typically it is an image resize, 
            then a transpose (HWC -> CHW) if using OpenCV 
            to read the image. Returns preprocessed image (OpenCV Mat if using OpenCV). 
shared/Python/Object_detector.py