StarGAN V2 - hpf(high-pass-filter)

hpf

The purpose of introducing masks is to accurately preserve face landmarks (i.e., eyes, nose) of a source image during translation. The hyperparameter w_hpf controls the strength of the preservation. If you increase the value of w_hpf, then the generator preserve the source landmarks more precisely, but it would decrease the reflection of reference styles.

You can set w_hpf higher than 1 for strong source preservation.

https://github.com/clovaai/stargan-v2/issues/70