init

backend/ppocr/utils/utility.py

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+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# 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 logging
+import os
+import imghdr
+import cv2
+import random
+import numpy as np
+import paddle
+
+
+def print_dict(d, logger, delimiter=0):
+    """
+    Recursively visualize a dict and
+    indenting acrrording by the relationship of keys.
+    """
+    for k, v in sorted(d.items()):
+        if isinstance(v, dict):
+            logger.info("{}{} : ".format(delimiter * " ", str(k)))
+            print_dict(v, logger, delimiter + 4)
+        elif isinstance(v, list) and len(v) >= 1 and isinstance(v[0], dict):
+            logger.info("{}{} : ".format(delimiter * " ", str(k)))
+            for value in v:
+                print_dict(value, logger, delimiter + 4)
+        else:
+            logger.info("{}{} : {}".format(delimiter * " ", k, v))
+
+
+def get_check_global_params(mode):
+    check_params = ['use_gpu', 'max_text_length', 'image_shape', \
+                    'image_shape', 'character_type', 'loss_type']
+    if mode == "train_eval":
+        check_params = check_params + [ \
+            'train_batch_size_per_card', 'test_batch_size_per_card']
+    elif mode == "test":
+        check_params = check_params + ['test_batch_size_per_card']
+    return check_params
+
+
+def _check_image_file(path):
+    img_end = {'jpg', 'bmp', 'png', 'jpeg', 'rgb', 'tif', 'tiff', 'gif'}
+    return any([path.lower().endswith(e) for e in img_end])
+
+
+def get_image_file_list(img_file):
+    imgs_lists = []
+    if img_file is None or not os.path.exists(img_file):
+        raise Exception("not found any img file in {}".format(img_file))
+
+    img_end = {'jpg', 'bmp', 'png', 'jpeg', 'rgb', 'tif', 'tiff', 'gif'}
+    if os.path.isfile(img_file) and _check_image_file(img_file):
+        imgs_lists.append(img_file)
+    elif os.path.isdir(img_file):
+        for single_file in os.listdir(img_file):
+            file_path = os.path.join(img_file, single_file)
+            if os.path.isfile(file_path) and _check_image_file(file_path):
+                imgs_lists.append(file_path)
+    if len(imgs_lists) == 0:
+        raise Exception("not found any img file in {}".format(img_file))
+    imgs_lists = sorted(imgs_lists)
+    return imgs_lists
+
+
+def check_and_read_gif(img_path):
+    if os.path.basename(img_path)[-3:] in ['gif', 'GIF']:
+        gif = cv2.VideoCapture(img_path)
+        ret, frame = gif.read()
+        if not ret:
+            logger = logging.getLogger('ppocr')
+            logger.info("Cannot read {}. This gif image maybe corrupted.")
+            return None, False
+        if len(frame.shape) == 2 or frame.shape[-1] == 1:
+            frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2RGB)
+        imgvalue = frame[:, :, ::-1]
+        return imgvalue, True
+    return None, False
+
+
+def load_vqa_bio_label_maps(label_map_path):
+    with open(label_map_path, "r", encoding='utf-8') as fin:
+        lines = fin.readlines()
+    lines = [line.strip() for line in lines]
+    if "O" not in lines:
+        lines.insert(0, "O")
+    labels = []
+    for line in lines:
+        if line == "O":
+            labels.append("O")
+        else:
+            labels.append("B-" + line)
+            labels.append("I-" + line)
+    label2id_map = {label: idx for idx, label in enumerate(labels)}
+    id2label_map = {idx: label for idx, label in enumerate(labels)}
+    return label2id_map, id2label_map
+
+
+def set_seed(seed=1024):
+    random.seed(seed)
+    np.random.seed(seed)
+    paddle.seed(seed)
+
+
+class AverageMeter:
+    def __init__(self):
+        self.reset()
+
+    def reset(self):
+        """reset"""
+        self.val = 0
+        self.avg = 0
+        self.sum = 0
+        self.count = 0
+
+    def update(self, val, n=1):
+        """update"""
+        self.val = val
+        self.sum += val * n
+        self.count += n
+        self.avg = self.sum / self.count