| """ Full assembly of the parts to form the complete network """ | |
| from .unet_parts import * | |
| class UNet(nn.Module): | |
| def __init__(self, n_channels, n_classes, bilinear=False): | |
| super(UNet, self).__init__() | |
| self.n_channels = n_channels | |
| self.n_classes = n_classes | |
| self.bilinear = bilinear | |
| self.inc = DoubleConv(n_channels, 64) | |
| self.down1 = Down(64, 128) | |
| self.down2 = Down(128, 256) | |
| self.down3 = Down(256, 512) | |
| factor = 2 if bilinear else 1 | |
| self.down4 = Down(512, 1024 // factor) | |
| self.up1 = Up(1024, 512 // factor, bilinear) | |
| self.up2 = Up(512, 256 // factor, bilinear) | |
| self.up3 = Up(256, 128 // factor, bilinear) | |
| self.up4 = Up(128, 64, bilinear) | |
| self.outc = OutConv(64, n_classes) | |
| def forward(self, x): | |
| x1 = self.inc(x) | |
| x2 = self.down1(x1) | |
| x3 = self.down2(x2) | |
| x4 = self.down3(x3) | |
| x5 = self.down4(x4) | |
| x = self.up1(x5, x4) | |
| x = self.up2(x, x3) | |
| x = self.up3(x, x2) | |
| x = self.up4(x, x1) | |
| logits = self.outc(x) | |
| return logits | |