Brent1:

The paper refers to the flipped vertically and horizontally filter as transposed ... filters
Is it correct that the term transposed filters has no semantic relation to the term transposed convolution?


Oh, you might be right and it seems the authors might indeed meant to flip the kernel and apply a “standard” convolution?
The transposed convolution is nicely explained here 6. In particular check chapter 4.2.
Would it fit the paper better, if nn.Conv2d with a flipped kernel would be used?