| 13 | expansion = 1 |
| 14 | |
| 15 | def __init__(self, in_planes, planes, stride=1, is_last=False): |
| 16 | super(BasicBlock, self).__init__() |
| 17 | self.is_last = is_last |
| 18 | self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride, padding=1, bias=False) |
| 19 | self.bn1 = nn.BatchNorm2d(planes) |
| 20 | self.conv2 = nn.Conv2d(planes, planes, kernel_size=3, stride=1, padding=1, bias=False) |
| 21 | self.bn2 = nn.BatchNorm2d(planes) |
| 22 | |
| 23 | self.shortcut = nn.Sequential() |
| 24 | if stride != 1 or in_planes != self.expansion * planes: |
| 25 | self.shortcut = nn.Sequential( |
| 26 | nn.Conv2d(in_planes, self.expansion * planes, kernel_size=1, stride=stride, bias=False), |
| 27 | nn.BatchNorm2d(self.expansion * planes) |
| 28 | ) |
| 29 | |
| 30 | def forward(self, x): |
| 31 | out = F.relu(self.bn1(self.conv1(x))) |