fixes #32 optimize deskew

        self.message = args[0]

def _deskew(image_path: str, max_skew: int = 10) -> float:

def _deskew(image_path: str, max_skew: int = 10, fast: bool = True) -> float:

    im = cv2.imread(image_path)

    height, width, _ = im.shape

    if fast:

        scale_factor = 1000 / max(height, width)

        im = cv2.resize(

            im,

            (int(width * scale_factor), int(height * scale_factor)),

            interpolation=cv2.INTER_LINEAR,

        )

    im_gs = cv2.cvtColor(im, cv2.COLOR_BGR2GRAY)

    im_gs = cv2.fastNlMeansDenoising(im_gs, h=3)

    im_bw = cv2.threshold(im_gs, 0, 255, cv2.THRESH_BINARY_INV | cv2.THRESH_OTSU)[1]