You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.9 KiB
64 lines
1.9 KiB
# 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 paddle |
|
import paddle.nn as nn |
|
import paddle.nn.functional as F |
|
|
|
|
|
def SyncBatchNorm(*args, **kwargs): |
|
"""In cpu environment nn.SyncBatchNorm does not have kernel so use nn.BatchNorm instead""" |
|
if paddle.get_device() == 'cpu': |
|
return nn.BatchNorm(*args, **kwargs) |
|
else: |
|
return nn.SyncBatchNorm(*args, **kwargs) |
|
|
|
|
|
class ConvBNReLU(nn.Layer): |
|
def __init__(self, |
|
in_channels, |
|
out_channels, |
|
kernel_size, |
|
padding='same', |
|
**kwargs): |
|
super().__init__() |
|
|
|
self._conv = nn.Conv2D( |
|
in_channels, out_channels, kernel_size, padding=padding, **kwargs) |
|
|
|
self._batch_norm = SyncBatchNorm(out_channels) |
|
|
|
def forward(self, x): |
|
x = self._conv(x) |
|
x = self._batch_norm(x) |
|
x = F.relu(x) |
|
return x |
|
|
|
|
|
class ConvBN(nn.Layer): |
|
def __init__(self, |
|
in_channels, |
|
out_channels, |
|
kernel_size, |
|
padding='same', |
|
**kwargs): |
|
super().__init__() |
|
self._conv = nn.Conv2D( |
|
in_channels, out_channels, kernel_size, padding=padding, **kwargs) |
|
self._batch_norm = SyncBatchNorm(out_channels) |
|
|
|
def forward(self, x): |
|
x = self._conv(x) |
|
x = self._batch_norm(x) |
|
return x
|
|
|