Maybe x2 was missed

[Okityou]

Deep-Learning/Pytorch-Seg/lesson-1/unet_parts.py

Line 56 in 5fd254b

x1 = self.up(x1)

Hi, thank you for your sharing. But when I try to run it, I found there is a mistake. Perhaps this paragraph needs to be modified. If x2=self.up(x1), this is also horrible, because the final dimension of concate does not match the input channel required by the next function.