TechRxiv
Quickly Transforming Discriminator in Pre-Trained GAN to Encoder.pdf (12.84 MB)

Quickly Transforming Discriminator in Pre-Trained GAN to Encoder

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preprint
posted on 08.06.2021, 09:52 by Cheng Yu, Wenmin Wang

Abstract-- Fine-designed deep Generative Adversarial Networks (GANs) can generate high-quality (HQ) images. However, the discriminator in GAN only plays a role to distinguish candidates produced by the generator from the true data distribution, and numerous generated samples are still not clear and true. From pre-trained GAN, we offer a self-supervised method to quickly transform the discriminator into an encoder and fine-tune the pre-trained GAN to an auto-encoder. The parameters of the pre-trained discriminator are reused and converted into an encoder for outputting reformed latent space. The transformation changes the previous GAN to a symmetrical architecture and the generator can reconstruct the HQ image by reforming latent space. By fixing the generator, the reformed latent space can perform better representation than the pre-trained GAN, and the performance of the pre-trained GAN can be improved by the transformed encoder.

Funding

Science and Technology Development Fund (FDCT) of Macau (0016/2019/A1)

History

Email Address of Submitting Author

disanda@foxmail.com

ORCID of Submitting Author

https://orcid.org/0000-0003-4816-1586

Submitting Author's Institution

Macau University of Science and Technology

Submitting Author's Country

China