Chen Liu

Hi :) I am Chen, now a Computer Graphics Ph.D. student at University College London (UCL), working with Prof. Tobias Ritschel and Prof. Niloy Mitra.

Before that, I had a Master from UCL and obtained my Bachelor from Beihang University. During my undergrad, I interned at Prof. Xianglong Liu’s Lab and worked at ByteDance as a graphics engineer.

Talking about research aspirations, my goal is to create a world satiating our “childish sense” of grand adventures. Here is a list of topics that shape the core of my works and interests: Appearance Modelling, Photorealistic Rendering, Data-driven Image Synthesis, and many others more – AI, of course.

News

Mar 08, 2025	I will attend Eurographics 2025 in London. Happy to meet up!
Feb 26, 2025	Honored to receive The Rabin Ezra Scholarship.
Dec 18, 2024	I gave a talk at Meta Reality Labs.
Sep 12, 2024	One paper got accepted to SIGGRAPH Asia 2024 Journal Track. See you in Tokyo!

Publications

Neural Differential Appearance Equations

Chen Liu, and Tobias Ritschel

ACM Transactions on Graphics (SIGGRAPH Asia 2024)

Accepted as TOP 5%

Details PDF Code Dataset Cite

NDAEs govern time-varying appearances, e.g., rusting and weathering, in terms of RGBs or even BRDFs.

@article{liuNeuralDifferentialAppearance2024,
  title = {Neural Differential Appearance Equations},
  author = {Liu, Chen and Ritschel, Tobias},
  journal = {ACM Transactions on Graphics},
  volume = {43},
  number = {6},
  pages = {1--17},
  year = {2024},
  doi = {10.1145/3687900},
}

Learning to Learn and Sample BRDFs

Chen Liu, Michael Fischer, and Tobias Ritschel

Computer Graphics Forum (Eurographics 2023)

Details PDF Code Cite

A set of most informative locations to sample BRDFs can be learned via meta-learning.

@article{liuLearningLearnSample2023,
  title = {Learning to Learn and Sample BRDFs},
  author = {Liu, Chen and Fischer, Michael and Ritschel, Tobias},
  journal = {Computer Graphics Forum},
  volume = {42},
  number = {2},
  pages = {201--211},
  year = {2023},
  doi = {10.1111/cgf.14754},
}

Projects

A collection of my useful code-bases
Graphics courses on Rendering / Simulation / Geometry with code
Path Tracer (Ray-Tracing-in-One-Week Series)

Services

Reviewer: Pacific Graphics, CVPR, Computer Graphics Forum

Volunteer: EGSR 2024 [📀, 📸], GAMES101 Grader

Teaching Assistant at UCL