[On the Frequency Bias of Generative Models K Schwarz, Y Liao, A Geiger](https://arxiv.org/abs/2111.02447) After upsampling using aura-sr, the hair becomes curve.  It similar to later gans like stylegan.  So [some papers](https://zhuanlan.zhihu.com/p/494060193) try to solve it in frequency domain.
On the Frequency Bias of Generative Models K Schwarz, Y Liao, A Geiger
After upsampling using aura-sr, the hair becomes curve.
It similar to later gans like stylegan.
So some papers try to solve it in frequency domain.