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"""Up and down-sample with linear interpolation."""
from torch import nn, Tensor
import torch.nn.functional as F
class Upsample(nn.Module):
"""Upsamples by a factor 2."""
def forward(self, x: Tensor) -> Tensor:
"""Applies upsampling."""
return F.interpolate(x, scale_factor=2, mode="nearest")
class Downsample(nn.Module):
"""Downsampling by a factor 2."""
def forward(self, x: Tensor) -> Tensor:
"""Applies downsampling."""
return F.avg_pool2d(x, kernel_size=2, stride=2)
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