fix #310

        # final_blk_list = sort_textblk_list(final_blk_list, im_w, im_h)

        final_blk_list = sort_regions(final_blk_list, )

    if len(final_blk_list) > 1:

        _final_blks = [final_blk_list[0]]

        for blk in final_blk_list[1:]:

            ax1, ay1, ax2, ay2 = blk.xyxy

            keep_blk = True

            aarea = (ax2 - ax1) * (ay2 - ay1) + 1e-6

            for eb in _final_blks:

                bx1, by1, bx2, by2 = eb.xyxy

                x1 = max(ax1, bx1)

                y1 = max(ay1, by1)

                x2 = min(ax2, bx2)

                y2 = min(ay2, by2)

                if y2 < y1 or x2 < x1:

                    continue

                inter_area = (y2 - y1) * (x2 - x1)

                if inter_area / aarea > 0.9:

                    keep_blk = False

                    break

            if keep_blk:

                _final_blks.append(blk)

        final_blk_list = _final_blks

    for blk in final_blk_list:

        if blk.language != 'ja' and not blk.vertical:

            num_lines = len(blk.lines)