Despite recent progress in generative image modeling, successfully generating high-resolution, diverse samples from complex datasets such as ImageNet remains an elusive goal. To this end, we train Generative Adversarial Networks at the largest scale yet attempted, and study the instabilities specific to such scale. We find that applying orthogonal regularization to the generator renders it amenable to a simple "truncation trick", allowing fine control over the trade-off between sample fidelity and variety by truncating the latent space. Our modifications lead to models which set the new state of the art in class-conditional image synthesis. When trained on ImageNet at 128x128 resolution, our models (BigGANs) achieve an Inception Score (IS) of 166.3 and Frechet Inception Distance (FID) of 9.6, improving over the previous best IS of 52.52 and FID of 18.65.

本文介绍了使用生成式对抗网络和正交正则化训练的大规模条件图片生成方法，并提出了一种截断技巧来控制生成器输入方差，从而在生成高保真度和多样化样本方面实现平衡。该方法应用于ImageNet数据集上，在128x128分辨率下，IS（Inception Score）为166.5，FID（Frechet Inception Distance）为7.4，表现超过之前的方法。

大规模 GAN 训练的高保真自然图像合成