Hi,I made this U-net code
class DoubleConv(nn.Module):
def __init__(self, in_ch, out_ch):
super(DoubleConv, self).__init__()
self.conv = nn.Sequential(
nn.Conv2d(in_ch, out_ch, 1, padding=1),
nn.BatchNorm2d(out_ch),
nn.ReLU(inplace=True),
nn.Conv2d(out_ch, out_ch, 3, padding=1),
nn.BatchNorm2d(out_ch),
nn.ReLU(inplace=True))
def forward(self, x):
x = self.conv(x)
return x
class InConv(nn.Module):
def __init__(self, in_ch, out_ch):
super(InConv, self).__init__()
self.conv = DoubleConv(in_ch, out_ch)
def forward(self, x):
x = self.conv(x)
return x
class Down(nn.Module):
def __init__(self, in_ch, out_ch):
super(Down, self).__init__()
self.mpconv = nn.Sequential(
nn.MaxPool2d(2),
DoubleConv(in_ch, out_ch)
)
def forward(self, x):
x = self.mpconv(x)
return x
class Up(nn.Module):
def __init__(self, in_ch, out_ch, bilinear=True):
super(Up, self).__init__()
if bilinear:
self.up = nn.Upsample(scale_factor=2, mode='bilinear', align_corners=True)
else:
self.up = nn.ConvTranspose2d(in_ch // 2, in_ch // 2, 2, stride=2)
self.conv = DoubleConv(in_ch, out_ch)
def forward(self, x1, x2):
x1 = self.up(x1)
diffY = x2.size()[2] - x1.size()[2]
diffX = x2.size()[3] - x1.size()[3]
x1 = F.pad(x1, (diffX // 2, diffX - diffX // 2,
diffY // 2, diffY - diffY // 2))
x = torch.cat([x2, x1], dim=1)
x = self.conv(x)
return x
class OutConv(nn.Module):
def __init__(self, in_ch, out_ch):
super(OutConv, self).__init__()
self.conv = nn.Conv2d(in_ch, out_ch, 1)
def forward(self, x):
x = self.conv(x)
return x
class Unet(nn.Module):
def __init__(self, in_channels, classes):
super(Unet, self).__init__()
self.n_channels = 3
self.n_classes = 2
self.inc = InConv(in_channels, 64)
self.down1 = Down(64, 128)
self.down2 = Down(128, 256)
self.down3 = Down(256, 512)
self.down4 = Down(512, 512)
self.up1 = Up(1024, 256)
self.up2 = Up(512, 128)
self.up3 = Up(256, 64)
self.up4 = Up(128, 64)
self.outc = OutConv(64, 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)
x = self.outc(x)
return x
problem : RuntimeError: Given groups=1, weight of size [64, 4, 1, 1], expected input[6451, 1, 5, 5] to have 4 channels, but got 1 channels instead
help me plzz