add refer for some code

ppocr/utils/iou.py

@@ -1,28 +1,20 @@
-# copyright (c) 2020 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.
+"""
+This code is refer from:
+https://github.com/whai362/PSENet/blob/python3/models/loss/iou.py
+"""
 
 import paddle
 
 EPS = 1e-6
 
+
 def iou_single(a, b, mask, n_class):
     valid = mask == 1
     a = a.masked_select(valid)
     b = b.masked_select(valid)
     miou = []
     for i in range(n_class):
-        if a.shape == [0] and a.shape==b.shape:
+        if a.shape == [0] and a.shape == b.shape:
             inter = paddle.to_tensor(0.0)
             union = paddle.to_tensor(0.0)
         else:
@@ -32,6 +24,7 @@ def iou_single(a, b, mask, n_class):
     miou = sum(miou) / len(miou)
     return miou
 
+
 def iou(a, b, mask, n_class=2, reduce=True):
     batch_size = a.shape[0]
 
@@ -39,10 +32,10 @@ def iou(a, b, mask, n_class=2, reduce=True):
     b = b.reshape([batch_size, -1])
     mask = mask.reshape([batch_size, -1])
 
-    iou = paddle.zeros((batch_size,), dtype='float32')
+    iou = paddle.zeros((batch_size, ), dtype='float32')
     for i in range(batch_size):
         iou[i] = iou_single(a[i], b[i], mask[i], n_class)
 
     if reduce:
         iou = paddle.mean(iou)
-    return iou
+    return iou

ppocr/utils/logging.py

@@ -1,16 +1,7 @@
-# Copyright (c) 2020 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.
+"""
+This code is refer from:
+https://github.com/WenmuZhou/PytorchOCR/blob/master/torchocr/utils/logging.py
+"""
 
 import os
 import sys