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clovaai / WCT2

Software that can perform photorealistic style transfer without the need of any post-processing steps.
MIT License
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LL components vs. avg. pooling #27

Closed felixplum closed 4 years ago

felixplum commented 4 years ago

Hi,

in the original paper equivalence between avg. pooling and the LL-component of the decomposition are claimed. However, in your code the L-component evaluates to [[0.5, 0.5], [0.5, 0.5]], which contradicts this statement. Am I missing something?

jaejun-yoo commented 4 years ago

Hi, we did not mean to say that LL is exactly the average pooling. We are saying that it is giving a similar effect (extracting a DC component of an image) to what average pooling does, and it actually is with a constant factor of 1/2 in that the average pooling is 1/2 * [[0.5,0.5], [0.5,0.5]]. The constant factor can be ignored since this operation is combined with the learned weights.

felixplum commented 4 years ago

Thanks for the quick answer, that makes sense!