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import torch |
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import torch.nn as nn |
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import numpy as np |
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class LatentUpscaler(nn.Module): |
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def head(self): |
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return [ |
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nn.Conv2d(self.chan, self.size, kernel_size=self.krn, padding=self.pad), |
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nn.ReLU(), |
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nn.Upsample(scale_factor=self.fac, mode="nearest"), |
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nn.ReLU(), |
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] |
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def core(self): |
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layers = [] |
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for _ in range(self.depth): |
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layers += [ |
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nn.Conv2d(self.size, self.size, kernel_size=self.krn, padding=self.pad), |
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nn.ReLU(), |
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] |
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return layers |
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def tail(self): |
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return [ |
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nn.Conv2d(self.size, self.chan, kernel_size=self.krn, padding=self.pad), |
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] |
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def __init__(self, fac, depth=16): |
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super().__init__() |
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self.size = 64 |
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self.chan = 4 |
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self.depth = depth |
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self.fac = fac |
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self.krn = 3 |
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self.pad = 1 |
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self.sequential = nn.Sequential( |
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*self.head(), |
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*self.core(), |
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*self.tail(), |
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) |
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def forward(self, x: torch.Tensor) -> torch.Tensor: |
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return self.sequential(x) |
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