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Tianyi Xie

Research Scientist
NVIDIA Research
tianyixie77 (at) g.ucla.edu


About Me

I am a Research Scientist in the Data-Driven AI for Robotics (DAIR) team at NVIDIA Research. I received my Ph.D. and M.S. degrees in Computer Science from UCLA, where I was advised by Prof. Chenfanfu Jiang and Prof. Demetri Terzopoulos. I received my B.Eng. degree in Software Engineering from Shanghai Jiao Tong University.

My research lies at the intersection of computer graphics, generative AI, and embodied AI. I am particularly interested in physics-informed methods for controllable 3D and 4D generation, simulation, animation, and robot learning.

News

Selected Publications

  1. GRAIL: Generating Humanoid Loco-Manipulation from 3D Assets and Video Priors teaser
    GRAIL: Generating Humanoid Loco-Manipulation from 3D Assets and Video Priors
    Tianyi Xie*, Haotian Zhang*, Jinhyung Park*, Zi Wang*, Bowen Wen, Jiefeng Li, Xueting Li, Qingwei Ben, Haoyang Weng, Yufei Ye, David Minor, Tingwu Wang, Chenfanfu Jiang, Sanja Fidler, Jan Kautz, Linxi Fan, Yuke Zhu, Zhengyi Luo†, Umar Iqbal†, Ye Yuan† (*Co-First Authors, †Project Leads)
    arXiv, 2026.
    PDF Code Dataset Project Page

  2. AnimaMimic: Imitating 3D Animation from Video Priors teaser
    AnimaMimic: Imitating 3D Animation from Video Priors
    Tianyi Xie*, Yunuo Chen*, Yaowei Guo*, Yin Yang, Bolei Zhou, Demetri Terzopoulos, Ying Jiang, Chenfanfu Jiang (*co-first authors)
    Conference on Computer Vision and Pattern Recognition (CVPR), 2026.
    PDF Project Page

  3. PhysMotion: Physics-Grounded Dynamics From a Single Image teaser
    PhysMotion: Physics-Grounded Dynamics From a Single Image
    Xiyang Tan*, Ying Jiang*, Xuan Li*, Zeshun Zong, Tianyi Xie, Yin Yang, Chenfanfu Jiang (*co-first authors)
    International Conference on 3D Vision (3DV). 2026.
    PDF Project Page

  4. Physics-Based Simulation teaser
    Physics-Based Simulation
    Minchen Li, Chenfanfu Jiang, Zhaofeng Luo, Wenxin Du, Chang Yu, Žiga Kovačič, Tianyi Xie
    Open-Source Online Book, 2025.
    Book Code

  5. GRIP: A General Robotic Incremental Potential Contact Simulation Dataset for Unified Deformable-Rigid Coupled Grasping teaser
    GRIP: A General Robotic Incremental Potential Contact Simulation Dataset for Unified Deformable-Rigid Coupled Grasping
    Siyu Ma*, Wenxin Du*, Chang Yu*, Ying Jiang*, Zeshun Zong, Tianyi Xie, Yunuo Chen, Yin Yang, Xuchen Han, Chenfanfu Jiang (*co-first authors)
    International Conference on Intelligent Robots and Systems (IROS), 2025.
    PDF Project Page Video

  6. Dress-1-to-3: Single Image to Simulation-Ready 3D Outfit with Diffusion Prior and Differentiable Physics teaser
    Dress-1-to-3: Single Image to Simulation-Ready 3D Outfit with Diffusion Prior and Differentiable Physics
    Xuan Li*, Chang Yu*, Wenxin Du*, Ying Jiang*, Tianyi Xie, Yunuo Chen, Yin Yang, Chenfanfu Jiang (*co-first authors)
    ACM Transactions On Graphics (SIGGRAPH), 2025.
    PDF Project Page

  7. PhysAnimator: Physics-Guided Generative Cartoon Animation teaser
    PhysAnimator: Physics-Guided Generative Cartoon Animation
    Tianyi Xie, Yiwei Zhao, Ying Jiang, Chenfanfu Jiang
    Conference on Computer Vision and Pattern Recognition (CVPR), 2025.
    PDF Project Page

  8. VideoPhy: Evaluating Physical Commonsense In Video Generation teaser
    VideoPhy: Evaluating Physical Commonsense In Video Generation
    Hritik Bansal^, Zongyu Lin^, Tianyi Xie*, Zeshun Zong*, Michal Yarom~, Yonatan Bitton~, Chenfanfu Jiang, Yizhou Sun, Kai-Wei Chang, Aditya Grover (*co-first authors)
    International Conference on Learning Representations (ICLR), 2025.
    PDF Code Project Page

  9. GarmentDreamer: 3DGS Guided Garment Synthesis with Diverse Geometry and Texture Details teaser
    GarmentDreamer: 3DGS Guided Garment Synthesis with Diverse Geometry and Texture Details
    Boqian Li*, Xuan Li*, Ying Jiang*, Tianyi Xie, Feng Gao, Huamin Wang, Yin Yang, Chenfanfu Jiang (*co-first authors)
    International Conference on 3D Vision (3DV), 2025.
    PDF Project Page

  10. Atlas3D: Physically Constrained Self-Supporting Text-to-3D for Simulation and Fabrication teaser
    Atlas3D: Physically Constrained Self-Supporting Text-to-3D for Simulation and Fabrication
    Yunuo Chen*, Tianyi Xie*, Zeshun Zong*, Xuan Li, Feng Gao, Yin Yang, Ying Nian Wu, Chenfanfu Jiang (*co-first authors)
    Neural Information Processing Systems (NeurIPS), 2024.
    PDF Code Project Page

  11. VR-GS: A Physical Dynamics-Aware Interactive Gaussian Splatting System in Virtual Reality teaser
    VR-GS: A Physical Dynamics-Aware Interactive Gaussian Splatting System in Virtual Reality
    Ying Jiang*, Chang Yu*, Tianyi Xie*, Xuan Li*, Yutao Feng, Huamin Wang, Minchen Li, Henry Lau, Feng Gao, Yin Yang, Chenfanfu Jiang (*co-first authors)
    ACM SIGGRAPH, 2024.
    PDF Project Page Video

  12. PhysGaussian: Physics-Integrated 3D Gaussians for Generative Dynamics teaser
    PhysGaussian: Physics-Integrated 3D Gaussians for Generative Dynamics
    Tianyi Xie*, Zeshun Zong*, Yuxing Qiu*, Xuan Li*, Yutao Feng, Yin Yang, Chenfanfu Jiang (*co-first authors)
    Conference on Computer Vision and Pattern Recognition (CVPR), 2024. Highlight
    PDF Code Project Page Video

  13. A Contact Proxy Splitting Method for Lagrangian Solid-Fluid Coupling teaser
    A Contact Proxy Splitting Method for Lagrangian Solid-Fluid Coupling
    Tianyi Xie, Minchen Li, Yin Yang, Chenfanfu Jiang
    ACM Transactions On Graphics (SIGGRAPH), 2023.
    PDF Video Tech Doc

  14. Multi-Layer Thick Shells teaser
    Multi-Layer Thick Shells
    Yunuo Chen, Tianyi Xie, Cem Yuksel, Danny Kaufman, Yin Yang, Chenfanfu Jiang, Minchen Li
    ACM SIGGRAPH, 2023.
    PDF Video Tech Doc

Experiences

Apr. 2026 - Present
NVIDIA Research
Research Scientist
June 2025 - Apr. 2026
NVIDIA Research, Santa Clara
Research Intern
June 2024 - Nov. 2024
Netflix Research, Los Gatos
Research Intern
Apr. 2020 - July 2021
Bytedance AI Lab, Shanghai
Research Intern

Teaching

Fall 2024 - Winter 2026
CS174A: Introduction to Computer Graphics
Teaching Assistant, UCLA
Spring 2024
CS33: Introduction to Computer Organization
Teaching Assistant, UCLA
Fall 2023, Winter 2024
PIC20A: Principles of Java Language with Applications
Teaching Assistant, UCLA

Personal

I am a big fan of Japanese animes. Shinsekai yori (From the New World) is my GOAT. During my free time, I also enjoy fingerstyle guitar playing. Daniel Padim and Kotaro Oshio are two of my favorite guitarists.


Last updated: June 2026.
Profile Photo credit to Ying Jiang.
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