Xu Peiyu

Computer Science, UIUC, IL, US
(+1) 949-826-6598  /  peiyuxu3@illinois.edu  /  xupaya.github.io

I am a Ph.D. student in Computer Science at the University of Illinois Urbana-Champaign, advised by Prof. Shuang Zhao. My research focuses on differentiable rendering, ray tracing, and neural scene representations, with an emphasis on real-time, GPU-friendly algorithms.

CV (PDF)  /  Google Scholar  /  GitHub  /  LinkedIn  / 

profile photo

Research Interests

Differentiable rendering, Monte Carlo light transport, neural rendering, GPU-accelerated algorithms, and real-time ray tracing.

Education

  • Ph.D. in Computer Science, University of Illinois Urbana-Champaign (UIUC), US — Sept. 2025 to Present
    Supervisor: Prof. Shuang Zhao
  • M.S. in Computer Science, University of California, Irvine (UCI), US — Sept. 2022 to June 2025
  • B.Eng. in Computer Science, HKUST, Hong Kong, China — Aug. 2018 to Sept. 2022
    Supervisor: Prof. Pedro Sander

Work Experience

  • Research Scientist Intern, Adobe Research, San Jose, US — June 2025 to Sept. 2025
    Advisor: Xin Sun & Ilyan Georgiev; Manager: Kalyan Sunkavalli
  • Research Scientist Intern, Nvidia Real-time Rendering Research, Redmond, US — June 2024 to Sept. 2024
    Advisor: Benedikt Bitterli & Lifan Wu; Manager: Aaron Lefohn
  • Research Assistant, UCSD, San Diego, US — June 2021 to Sept. 2021
    Advisor: Tzu-mao Li
Stochastic Ray Tracing for 3D Gaussian Splatting
Peiyu Xu, Xin Sun, Krishna Mullia, Raymond Fei, Iliyan Georgiev, Shuang Zhao,

Project page coming soon

Efficient and generalizable 3DGS optimization via sorting-free stochastic ray tracing.

Robust and Efficient Differentiable Rendering Through Kernel Density Estimation
Peiyu Xu, Lifan Wu, Benedikt Bitterli, Ravi Ramamoorthi, Shuang Zhao,

Project page coming soon

Kernel-density estimation on parameter space for efficient differentiable and inverse rendering.

Langevin Monte Carlo Based Sampling of Visibility Boundaries
Peiyu Xu, Sai Bangaru, Tzu-mao Li, Shuang Zhao,
ACM SIGGRAPH Asia 2024 (conference-track full paper)
Project page / Paper

Manifold walk on the geometry silhouette space for efficient sampling of visibility boundaries.

Warped-Area Reparameterization of Differential Path Integrals
Peiyu Xu, Sai Bangaru, Tzu-mao Li, Shuang Zhao,
ACM Transactions on Graphics (SIGGRAPH Asia 2023), 42(6), 2023
Best Paper Award
Project page / Paper

Differentiable path integral with divergence-theorem-based interior estimators.

Awards

  • SIGGRAPH Asia 2023 Best Paper Award

Skills

  • Languages: C++, Python, PyTorch
  • GPU Programming: Slang.D, CUDA, OptiX, Vulkan

Website template adapted from Jon Barron.