Search Results for author: Mengfei Xia

Found 5 papers, 1 papers with code

SMaRt: Improving GANs with Score Matching Regularity

no code implementations30 Nov 2023 Mengfei Xia, Yujun Shen, Ceyuan Yang, Ran Yi, Wenping Wang, Yong-Jin Liu

In this work, we revisit the mathematical foundations of GANs, and theoretically reveal that the native adversarial loss for GAN training is insufficient to fix the problem of subsets with positive Lebesgue measure of the generated data manifold lying out of the real data manifold.

valid

Towards More Accurate Diffusion Model Acceleration with A Timestep Aligner

no code implementations14 Oct 2023 Mengfei Xia, Yujun Shen, Changsong Lei, Yu Zhou, Ran Yi, Deli Zhao, Wenping Wang, Yong-Jin Liu

By viewing the generation of diffusion models as a discretized integrating process, we argue that the quality drop is partly caused by applying an inaccurate integral direction to a timestep interval.

Denoising

3D-CariGAN: An End-to-End Solution to 3D Caricature Generation from Face Photos

1 code implementation15 Mar 2020 Zipeng Ye, Mengfei Xia, Yanan sun, Ran Yi, MinJing Yu, Juyong Zhang, Yu-Kun Lai, Yong-Jin Liu

The most challenging issue for our system is that the source domain of face photos (characterized by normal 2D faces) is significantly different from the target domain of 3D caricatures (characterized by 3D exaggerated face shapes and textures).

Caricature

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