set detected_font_size as property func of TextBlock

    shadow_color: Tuple = (0, 0, 0)

    shadow_offset: List = field(default_factory = lambda : [0., 0.])

    src_is_vertical: bool = None

    detected_font_size: int = -1

    _detected_font_size: int = -1

    region_mask: np.ndarray = None

    region_inpaint_dict: Dict = None

            self.vec = np.array(self.vec, np.float32)

        if self.src_is_vertical is None:

            self.src_is_vertical = self.vertical

        if self.detected_font_size == -1:

            self.detected_font_size = self.font_size

    @property

    def detected_font_size(self):

        if self._detected_font_size > 0:

            return self._detected_font_size

        return self.font_size

    def adjust_bbox(self, with_bbox=False, x_range=None, y_range=None):

        lines = self.lines_array().astype(np.int32)

            lines[..., 1] = np.clip(lines[..., 1], 0, im_h-1)

            blk.lines = lines.astype(np.int64).tolist()

            blk.font_size += expand_size

        blk.detected_font_size = blk.font_size

        blk._detected_font_size = blk.font_size

    return final_blk_list