1cdf14d1e3699d61d237cf76ce1c2dca-Supplemental.pdf

We follow [21] and implement our image compression models as "VQGANs". More specifically, we use the official implementation provided at https://github.com/CompVis/ For FFHQ, we train such a compression model from scratch. See Tab. 4 for an overview. As some of the codebook entries remain unused after training, we shrink the codebook to its effective size when training a generative model on top of it.