StyleSwin: Transformer-based GAN for High-resolution Image Generation

Overview

StyleSwin

Teaser

This repo is the official implementation of "StyleSwin: Transformer-based GAN for High-resolution Image Generation".

By Bowen Zhang, Shuyang Gu, Bo Zhang, Jianmin Bao, Dong Chen, Fang Wen, Yong Wang and Baining Guo.

Code and pretrained models will be released soon. Please stay tuned.

Abstract

Despite the tantalizing success in a broad of vision tasks, transformers have not yet demonstrated on-par ability as ConvNets in high-resolution image generative modeling. In this paper, we seek to explore using pure transformers to build a generative adversarial network for high-resolution image synthesis. To this end, we believe that local attention is crucial to strike the balance between computational efficiency and modeling capacity. Hence, the proposed generator adopts Swin transformer in a style-based architecture. To achieve a larger receptive field, we propose double attention which simultaneously leverages the context of the local and the shifted windows, leading to improved generation quality. Moreover, we show that offering the knowledge of the absolute position that has been lost in window-based transformers greatly benefits the generation quality. The proposed StyleSwin is scalable to high resolutions, with both the coarse geometry and fine structures benefit from the strong expressivity of transformers. However, blocking artifacts occur during high-resolution synthesis because performing the local attention in a block-wise manner may break the spatial coherency. To solve this, we empirically investigate various solutions, among which we find that employing a wavelet discriminator to examine the spectral discrepancy effectively suppresses the artifacts. Extensive experiments show the superiority over prior transformer-based GANs, especially on high resolutions, e.g., 1024x1024. The StyleSwin, without complex training strategies, excels over StyleGAN on CelebA-HQ 1024x1024, and achieves on-par performance on FFHQ 1024x1024, proving the promise of using transformers for high-resolution image generation.

Main Results

Quantitative Results

Dataset Resolution FID Pretrained Model
FFHQ 256x256 2.81 -
LSUN Church 256x256 3.10 -
CelebA-HQ 256x256 3.25 -
FFHQ 1024x1024 5.07 -
CelebA-HQ 1024x1024 4.43 -

Qualitative Results

Image samples of FFHQ-1024 generated by StyleSwin:

Image samples of CelebA-HQ 1024 generated by StyleSwin:

Latent code interpolation examples of FFHQ-1024 between the left-most and the right-most images:

Citing StyleSwin

@misc{zhang2021styleswin,
      title={StyleSwin: Transformer-based GAN for High-resolution Image Generation}, 
      author={Bowen Zhang and Shuyang Gu and Bo Zhang and Jianmin Bao and Dong Chen and Fang Wen and Yong Wang and Baining Guo},
      year={2021},
      eprint={2112.10762},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}

Maintenance

This is the codebase for our research work. Please open a GitHub issue for any help. If you have any questions regarding the technical details, feel free to contact [email protected] or [email protected].

License

The codes and the pretrained model in this repository are under the MIT license as specified by the LICENSE file. We use our labeled dataset to train the scratch detection model.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

Owner
Microsoft
Open source projects and samples from Microsoft
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