first commit

ppocr/data/imaug/copy_paste.py

+# copyright (c) 2021 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 copy
+import cv2
+import random
+import numpy as np
+from PIL import Image
+from shapely.geometry import Polygon
+
+from ppocr.data.imaug.iaa_augment import IaaAugment
+from ppocr.data.imaug.random_crop_data import is_poly_outside_rect
+from tools.infer.utility import get_rotate_crop_image
+
+
+class CopyPaste(object):
+    def __init__(self, objects_paste_ratio=0.2, limit_paste=True, **kwargs):
+        self.ext_data_num = 1
+        self.objects_paste_ratio = objects_paste_ratio
+        self.limit_paste = limit_paste
+        augmenter_args = [{'type': 'Resize', 'args': {'size': [0.5, 3]}}]
+        self.aug = IaaAugment(augmenter_args)
+
+    def __call__(self, data):
+        point_num = data['polys'].shape[1]
+        src_img = data['image']
+        src_polys = data['polys'].tolist()
+        src_texts = data['texts']
+        src_ignores = data['ignore_tags'].tolist()
+        ext_data = data['ext_data'][0]
+        ext_image = ext_data['image']
+        ext_polys = ext_data['polys']
+        ext_texts = ext_data['texts']
+        ext_ignores = ext_data['ignore_tags']
+
+        indexs = [i for i in range(len(ext_ignores)) if not ext_ignores[i]]
+        select_num = max(