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- # 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 random
- import numpy as np
- from PIL import Image, ImageDraw
- from .base import CVResult
- class FormulaRecResult(CVResult):
- _HARD_FLAG = False
- def _to_str(self, *args, **kwargs):
- return super()._to_str(*args, **kwargs).replace("\\\\", "\\")
- def _to_img(
- self,
- ):
- """draw formula result"""
- boxes = self["dt_polys"]
- formula = self["rec_formula"]
- image = self._img_reader.read(self["input_path"])
- if self._HARD_FLAG:
- image_np = np.array(image)
- image = Image.fromarray(image_np[:, :, ::-1])
- img = image.copy()
- random.seed(0)
- draw_img = ImageDraw.Draw(img)
- if formula is None or len(formula) != len(boxes):
- formula = [None] * len(boxes)
- for idx, (box, txt) in enumerate(zip(boxes, formula)):
- try:
- color = (
- random.randint(0, 255),
- random.randint(0, 255),
- random.randint(0, 255),
- )
- box = np.array(box)
- pts = [(x, y) for x, y in box.tolist()]
- draw_img.polygon(pts, outline=color, width=8)
- draw_img.polygon(box, fill=color)
- except:
- continue
- img = Image.blend(image, img, 0.5)
- return img
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