Projected GANs Converge Faster
Generative Adversarial Networks (GANs) produce high-quality images but are challenging to train. They need careful regularization, vast amounts of compute, and expensive hyper-parameter sweeps. We make significant headway on these issues by projecting generated and real samples into a fixed, pretrained feature space. Motivated by the finding that the discriminator cannot fully exploit features from deeper layers of the pretrained model, we propose a more effective strategy that mixes features across channels and resolutions. Our Projected GAN improves image quality, sample efficiency, and convergence speed. It is further compatible with resolutions of up to one Megapixel and advances the state-of-the-art Fr\'echet Inception Distance (FID) on twenty-two benchmark datasets. Importantly, Projected GANs match the previously lowest FIDs up to 40 times faster, cutting the wall-clock time from 5 days to less than 3 hours given the same computational resources.
PDF Abstract NeurIPS 2021 PDF NeurIPS 2021 Abstract
Colab
Spaces
Replicate
ImageNet
Cityscapes
CUB-200-2011
FFHQ
Oxford 102 Flower
LSUN
CLEVR
Stanford Cars
AFHQ
Stanford Dogs
ArtBench-10 (32x32)
