PaddleX/paddlex/inference/results/table_rec.py

# copyright (c) 2024 PaddlePaddle Authors. All Rights Reserve.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import cv2
import numpy as np
from pathlib import Path
import PIL
from PIL import Image, ImageDraw, ImageFont

from .utils.mixin import HtmlMixin, XlsxMixin
from .base import BaseResult, CVResult


class TableRecResult(CVResult):
    """SaveTableResults"""

    _HARD_FLAG = False

    def __init__(self, data):
        super().__init__(data)

    def _to_img(self):
        image = self._img_reader.read(self["input_path"])
        if self._HARD_FLAG:
            image_np = np.array(image)
            image = Image.fromarray(image_np[:, :, ::-1])
        bbox_res = self["bbox"]
        if len(bbox_res) > 0 and len(bbox_res[0]) == 4:
            vis_img = self.draw_rectangle(image, bbox_res)
        else:
            vis_img = self.draw_bbox(image, bbox_res)
        return vis_img

    def draw_rectangle(self, image, boxes):
        """draw_rectangle"""
        boxes = np.array(boxes)
        img_show = image.copy()
        for box in boxes.astype(int):
            x1, y1, x2, y2 = box
            cv2.rectangle(img_show, (x1, y1), (x2, y2), (255, 0, 0), 2)
        return img_show

    def draw_bbox(self, image, boxes):
        """draw_bbox"""
        for box in boxes:
            box = np.reshape(np.array(box), [-1, 1, 2]).astype(np.int64)
            image = cv2.polylines(np.array(image), [box], True, (255, 0, 0), 2)
        return image


class StructureTableResult(TableRecResult, HtmlMixin, XlsxMixin):
    """StructureTableResult"""

    def __init__(self, data):
        super().__init__(data)
        HtmlMixin.__init__(self)
        XlsxMixin.__init__(self)

    def _to_html(self):
        return self["html"]


class TableResult(BaseResult):
    """TableResult"""

    def save_to_html(self, save_path):
        if not save_path.lower().endswith(("html")):
            input_path = self["input_path"]
            save_path = Path(save_path) / f"{Path(input_path).stem}"
        else:
            save_path = Path(save_path).stem
        for table_result in self["table_result"]:
            table_result.save_to_html(save_path)

    def save_to_xlsx(self, save_path):
        if not save_path.lower().endswith(("xlsx")):
            input_path = self["input_path"]
            save_path = Path(save_path) / f"{Path(input_path).stem}"
        else:
            save_path = Path(save_path).stem
        for table_result in self["table_result"]:
            table_result.save_to_xlsx(save_path)

    def save_to_img(self, save_path):
        if not save_path.lower().endswith((".jpg", ".png")):
            input_path = self["input_path"]
            save_path = Path(save_path) / f"{Path(input_path).stem}"
        else:
            save_path = Path(save_path).stem
        layout_save_path = f"{save_path}_layout.jpg"
        ocr_save_path = f"{save_path}_ocr.jpg"
        table_save_path = f"{save_path}_table.jpg"
        layout_result = self["layout_result"]
        layout_result.save_to_img(layout_save_path)
        ocr_result = self["ocr_result"]
        ocr_result.save_to_img(ocr_save_path)
        for table_result in self["table_result"]:
            table_result.save_to_img(table_save_path)