 nn.ConvTranspose2d(16, 16, 3, stride=2, padding=1)
        >>> h = downsample(input)
        >>> h.size()
        torch.Size([1, 16, 6, 6])
        >>> output = upsample(h, output_size=input.size())
        >>> output.size()
        torch.Size([1, 16, 12, 12])

    .. _`here`:
        https://github.com/vdumoulin/conv_arithmetic/blob/master/README.md

    .. _`Deconvolutional Networks`:
        https://www.matthewzeiler.com/mattzeiler/deconvolutionalnetworks.pdf
    r