Bio

I am an AI Research Scientist at Meta Codec Avatars Lab, where I work on next generation digital humans.

I received my Ph.D. degree from ETH Zurich, under the supervision of Prof. Otmar Hilliges and Prof. Marc Pollefeys, I was supported by the Microsoft Swiss JRC PhD Fellowship, through which I collaborated closely with Dr. Julien Valentin. During my Ph.D., I was a research intern at Meta Codec Avatars Lab, fortunately mentored by Prof. Yaser Sheikh. After the PhD, I worked as a Senior Researcher/Postdoc at ETH Zurich for 3 months. I received my master's degree in robotics from ETH Zurich with distinction, and my bachelor's degree in electrical engineering from University of Stuttgart and Wuhan University.

News

I joined Meta as an AI Research Scientist.
Gaussian Wardrobe is accepted by 3DV2026.
I successfully defended my Ph.D. degree! My thesis Human Digitization from In-the-Wild Videos is now available online.
PHD is accepted by ICCV2025.
I was honored to be recognized as an Outstanding Reviewer at CVPR2025!
Vid2Avatar-Pro is accepted by CVPR2025.
ReLoo and HSR are accepted by ECCV2024.
I started my research internship at Meta Codec Avatars Lab in Pittsburgh.
MultiPly and 4D-DRESS are accepted by CVPR2024.
EMDB is accepted by ICCV2023.
Vid2Avatar, X-Avatar and Hi4D are accepted by CVPR2023.
I started my Ph.D. study at ETH Zurich.

Publications

* Equal Contribution. † Equal Advisory / Corresponding Author.

Gaussian Wardrobe teaser
Gaussian Wardrobe: Compositional 3D Gaussian Avatars for Free-Form Virtual Try-on
3DV 2026
Zhiyi Chen*, Hsuan-I Ho*, Tianjian Jiang, Jie Song, Manuel Kaufmann, Chen Guo†
PhD thesis cover — Human Digitization from In-the-Wild Videos
Human Digitization from In-the-Wild Videos
Ph.D. Thesis, ETH Zurich, 2025
Chen Guo
PHD teaser
PHD: Personalized 3D Human Body Fitting with Point Diffusion
ICCV 2025
Hsuan-I Ho, Chen Guo, Po-Chen Wu, Ivan Shugurov, Chengcheng Tang, Abhay Mittal, Sizhe An, Manuel Kaufmann†, Linguang Zhang†
Vid2Avatar-Pro: Authentic Avatar from Videos in the Wild via Universal Prior
CVPR 2025
Chen Guo*, Junxuan Li*, Yash Kant, Yaser Sheikh, Shunsuke Saito†, Chen Cao†
Project page Video Paper Public Comparisons
ReLoo: Reconstructing Humans Dressed in Loose Garments from Monocular Video in the Wild
ECCV 2024
Chen Guo*, Tianjian Jiang*, Manuel Kaufmann, Chengwei Zheng, Julien Valentin, Jie Song†, Otmar Hilliges
Project page Code Video Paper
HSR teaser
HSR: Holistic 3D Human-Scene Reconstruction from Monocular Videos
ECCV 2024
Lixin Xue, Chen Guo, Chengwei Zheng, Fangjinhua Wang, Tianjian Jiang, Hsuan-I Ho, Manuel Kaufmann, Jie Song†, Otmar Hilliges
MultiPly teaser
MultiPly: Reconstruction of Multiple People from Monocular Video in the Wild
CVPR 2024 (Oral)
Zeren Jiang*, Chen Guo*, Manuel Kaufmann, Tianjian Jiang, Julien Valentin, Otmar Hilliges, Jie Song†
Project page Code Video Paper
4D-DRESS teaser
4D-DRESS: A 4D Dataset of Real-World Human Clothing With Semantic Annotations
CVPR 2024 (Highlight)
Wenbo Wang*, Hsuan-I Ho*, Chen Guo, Boxiang Rong, Artur Grigorev, Jie Song, Juan Zarate†, Otmar Hilliges
EMDB teaser
EMDB: The Electromagnetic Database of Global 3D Human Pose and Shape in the Wild
ICCV 2023
Manuel Kaufmann, Jie Song, Chen Guo, Kaiyue Shen, Tianjian Jiang, Chengcheng Tang, Juan Zarate, Otmar Hilliges
Vid2Avatar teaser
Vid2Avatar: 3D Avatar Reconstruction from Videos in the Wild via Self-supervised Scene Decomposition
CVPR 2023
Chen Guo, Tianjian Jiang, Xu Chen, Jie Song†, Otmar Hilliges
Project page Code Video Paper
X-Avatar teaser
X-Avatar: Expressive Human Avatars
CVPR 2023
Kaiyue Shen*, Chen Guo*, Manuel Kaufmann, Juan Zarate, Julien Valentin, Jie Song†, Otmar Hilliges
Project page Code Video Paper
Hi4D teaser
Hi4D: 4D Instance Segmentation of Close Human Interaction
CVPR 2023
Yifei Yin, Chen Guo, Manuel Kaufmann, Juan Zarate, Jie Song, Otmar Hilliges
PINA teaser
PINA: Learning a Personalized Implicit Neural Avatar from a Single RGB-D Video Sequence
CVPR 2022
Zijian Dong*, Chen Guo*, Jie Song†, Xu Chen, Andreas Geiger, Otmar Hilliges
Human Performance Capture teaser
Human Performance Capture from Monocular Video in the Wild
3DV 2021
Chen Guo, Xu Chen, Jie Song, Otmar Hilliges
Shape-aware Multi-Person Pose Estimation teaser
Shape-aware Multi-Person Pose Estimation from Multi-view Images
ICCV 2021
Zijian Dong, Jie Song, Xu Chen, Chen Guo, Otmar Hilliges