Perceptual loss: LPIPS vs. StyleGAN Discriminator

[matanby]

Hi!

Thanks for sharing this awesome work :-)

I'm wondering on the difference in perceptual image quality when using the LPIPS model (as stated in the paper) vs. the StyleGAN discriminator (as used in the updated collab notebook) for the perceptual loss.
In your experience, what kind of difference does using the StyleGAN discriminator have on the image quality, when compared to using LPIPS?

[Min Jin Chong]

Hi, the paper should be updated on arxiv with some comparison. But generally lpips captures less details and has some downsampling artifacts.

[matanby]

I've just noticed the updated paper, and read through the relevant section. Thanks for the answer!