Lingqi Yan (闫令琪)
Assistant Professor

Department of Computer Science
University of California, Santa Barbara
2119 Harold Frank Hall
Santa Barbara, CA 93106

lingqi@cs.ucsb.edu

Curriculum Vitae [Jun 2021]

Latest News

  • [Apr 2021] We have four papers accepted to SIGGRAPH 2021.
  • [Mar 2021] I am presenting a free online course "GAMES202: Real-time High Quality Rendering" in Chinese.
  • [Feb 2021] We have one paper accepted to ToG 2021, and one paper accepted to Eurographics 2021.
  • [Aug 2020] We have one paper accepted to SIGGRAPH Asia 2020.
  • [Feb 2020] I am presenting a free online course "GAMES101: Introduction to Modern Computer Graphics" in Chinese.
  • [Dec 2019] Pradeep and I have co-hosted the 2nd SoCal Rendering Day in UC Santa Barbara!
  • [Jul 2019] We have two papers accepted to SIGGRAPH Asia 2019.
  • [May 2019] I am glad to receive the Outstanding Doctoral Dissertation Award at this year's SIGGRAPH!
  • [May 2019] We have one paper accepted to EGSR 2019.
  • [Mar 2019] We have two papers accepted to SIGGRAPH.
  • [Dec 2018] I visited top universities and research labs (THU, PKU, USTC, ZJU, MSRA, NJUST, BUAA) in China and gave talks on next generation rendering.
  • [Oct 2018] I attended SoCal Rendering Day at UCSD.
  • [Jul 2018] I have joined UC Santa Barbara as an Assistant Professor!
  • [Jun 2018] My Ph.D. dissertation is accepted by the administrators at UC Berkeley. Congrats Dr. Yan!
  • [Apr 2018] I received C.V. Ramamoorthy Distinguished Research Award for "outstanding contributions to a new research area".
  • [03/23/18] Our paper Rendering Specular Microgeometry with Wave Optics is accepted by SIGGRAPH 2018!

A Short Bio

I am an Assistant Professor of Computer Science at UC Santa Barbara, co-director of the MIRAGE Lab, and affiliated faculty in the Four Eyes Lab. Before joining UCSB, I received my Ph.D. degree from the Department of Electrical Engineering and Computer Sciences at UC Berkeley, advised remotely by Prof. Ravi Ramamoorthi at UC San Diego. During my Ph.D., I worked at Walt Disney Animation Studios (2014), Autodesk (2015), Weta Digital (2016) and NVIDIA Research (2017) as an intern. Earlier, I obtained my bachelor degree in Computer Science from Tsinghua University in China in 2013, advised by Prof. Shi-Min Hu and Prof. Kun Xu.


Research

RT / offline Rendering
Appearance Modeling
Future Display Equip.
Emerging Technology
Ultimate Realism

My research is in Computer Graphics. During my Ph.D. career, I mainly aimed at rendering photo-realistic visual appearance (a.k.a. hard-core graphics) at real world complexity, building theoretical foundations mathematically and physically to reveal the principles of the visual world. I have brought original research topics to Computer Graphics, such as detailed rendering from microstructure, and real-time ray tracing with reconstruction. And I took the first steps exploiting Machine Learning approaches for physically based rendering.

As a young Computer Graphics researcher, my dream is to present people an interactive computer-generated world to live in, just like the ones in the movies The Matrix and Ready Player One. To achieve that, I come up with my own Rendering Equation, as you can see above. I am actively and prudently looking for outstanding students (details and FAQs) to work on related research topics, including but not limited to physically-based / image-based rendering, real-time ray tracing and realistic appearance modeling / acquisition. Let's work together, not to change the world, but to create one.

I am fortunate and proud to work with these phenomenal students:
Current PhD Students: Zheng Zeng, Yaoyi (Elyson) Bai, Yang Zhou, Shlomi Steinberg
Current MS Students: N/A
Alumni: Jinglei Yang (MS, now at Amazon), Lei Xu (MS, now at Microsoft)


Teaching

Term Course Location Time
Fall 2021 CS180: Introduction to Computer Graphics SH 1431 TuTh 11:00 AM - 12:15 PM (PT)
Spring 2021 CS291A: Real-Time High Quality Rendering Online Asynchronous Access
Spring 2021 GAMES202: Real-Time High Quality Rendering (in Chinese) Online TuSa 10:00 AM - 11:00 AM (GMT+8)
Winter 2021 CS180 / CS280: Introduction to Computer Graphics Online Asynchronous Access
Fall 2020 CS190I: Introduction to Offline Rendering Online Asynchronous Access
Spring 2020 CS291A: Real-Time High Quality Rendering Online MW 5:00 PM - 6:15 PM (PT)
Spring 2020 GAMES101: Introduction to Computer Graphics (in Chinese) Online TuF 10:00 AM - 11:00 AM (GMT+8)
Winter 2020 CS180: Introduction to Computer Graphics Phelps 2516 TuTh 11:00 AM - 12:15 PM (PT)
Spring 2019 CS180: Introduction to Computer Graphics Girvetz 2128 MW 11:00 AM - 12:15 PM (PT)
Winter 2019 CS291A: Real-Time High Quality Rendering Phelps 3526 MW 3:30 PM - 5:30 PM (PT)

Publications / Technical Reports*

Physical Light-Matter Interaction in Hermite-Gauss Space
Shlomi Steinberg, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2021)

Project Page Paper

ExtraNet: Real-time Extrapolated Rendering for Low-latency Temporal Supersampling
Jie Guo, Xihao Fu, Liqiang Lin, Hengjun Ma, Yanwen Guo, Shiqiu (Edward) Liu, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2021)

Paper Video

Ensemble Denoising for Monte Carlo Renderings
Shaokun Zheng, Fengshi Zheng, Kun Xu, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2021)

Paper Supplementary (476MB)

Fast and Accurate Spherical Harmonics Products
Hanggao Xin, Zhiqian Zhou, Di An, Ling-Qi Yan, Kun Xu, Shi-Min Hu, Shing-Tung Yau
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2021)

Paper

Rendering Discrete Participating Media with Geometrical Optics Approximation
Jie Guo, Bingyang Hu, Yanjun Chen, Yuanqi Li, Yanwen Guo, Ling-Qi Yan
Computational Visual Media, 2021

Paper Video

A Survey on Homogeneous Participating Media Rendering
Wenshi Wu, Beibei Wang, Ling-Qi Yan
Computational Visual Media, 2021

Paper

Temporally Reliable Motion Vectors for Better Use of Temporal Information
Zheng Zeng, Shiqiu (Edward) Liu, Jinglei Yang, Lu Wang, Ling-Qi Yan
Ray Tracing Gems II: Chapter 25

Website

Foveated Photon Mapping
Xuehuai Shi, Lili Wang, Xiaoheng Wei, Ling-Qi Yan
IEEE Transactions on Visualization and Computer Graphics, 2021

Paper

Rendering of Subjective Speckle Formed by Rough Statistical Surfaces
Shlomi Steinberg, Ling-Qi Yan
ACM Transactions on Graphics, 2021

Project Page Paper Videos (102MB)

A Generic Framework for Physical Light Transport
Shlomi Steinberg, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2021)

Project Page Paper Video Code

Neural Complex Luminaires: Representation and Rendering
Junqiu Zhu, Yaoyi Bai, Zilin Xu, Steve Bako, Edgar Velázquez-Armendáriz, Lu Wang, Pradeep Sen, Miloš Hašan, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2021)

Paper Video

Volumetric Appearance Stylization With Stylizing Kernel Prediction Network
Jie Guo, Mengtian Li, Zijing Zong, Yuntao Liu, Jingwu He, Yanwen Guo, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2021)

Paper Video

Highlight-Aware Two-Stream Network for Single-Image SVBRDF Acquisition
Jie Guo, Shuichang Lai, Chengzhi Tao, Yuelong Cai, Lei Wang, Yanwen Guo, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2021)

Paper Video Supplementary

Vectorization for Fast, Analytic, and Differentiable Visibility
Yang Zhou, Lifan Wu, Ravi Ramamoorthi, Ling-Qi Yan
ACM Transactions on Graphics, 2021

Paper Video

Temporally Reliable Motion Vectors for Real-time Ray Tracing
Zheng Zeng, Shiqiu (Edward) Liu, Jinglei Yang, Lu Wang, Ling-Qi Yan
Computer Graphics Forum (Proceedings of Eurographics 2021)

Paper Video

A Bayesian Inference Framework for Procedural Material Parameter Estimation
Yu Guo, Miloš Hašan, Ling-Qi Yan, Shuang Zhao
Computer Graphics Forum (Proceedings of Pacific Graphics 2020)

Project Page Paper Supplementary

Path-based Monte Carlo Denoising Using a Three-Scale Neural Network
Weiheng Lin, Beibei Wang, Jian Yang, Lu Wang, Ling-Qi Yan
Computer Graphics Forum, Dec 2020

Archive Paper

Path Cuts: Efficient Rendering of Pure Specular Light Transport
Beibei Wang, Miloš Hašan, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2020)

Paper Video

Foveated Instant Radiosity
Lili Wang, Runze Li, Xuehuai Shi, Ling-Qi Yan, Zhichao Li
IEEE International Symposium on Mixed and Augmented Reality (ISMAR) 2020

Paper Video

Lightweight Bilateral Convolutional Neural Networks for Interactive Single-bounce Diffuse Indirect Illumination
Hanggao Xin, Shaokun Zheng, Kun Xu, Ling-Qi Yan
IEEE Transactions on Visualization and Computer Graphics, 2020

Paper Video Code

Example-Based Microstructure Rendering with Constant Storage
Beibei Wang, Miloš Hašan, Nicolas Holzschuch, Ling-Qi Yan
ACM Transactions on Graphics, 2020

Paper Video Code

Learning Generative Models for Rendering Specular Microgeometry
Alexandr Kuznetsov, Miloš Hašan, Zexiang Xu, Ling-Qi Yan, Bruce Walter, Nima Khademi Kalantari, Steve Marschner, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2019)

Paper Video

GradNet: Unsupervised Deep Screened Poisson Reconstruction for Gradient-Domain Rendering
Jie Guo, Mengtian Li, Quewei Li, Yuting Qiang, Bingyang Hu, Yanwen Guo, Ling-Qi Yan
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2019)

Paper Supplementary

Adaptive BRDF-Oriented Multiple Importance Sampling of Many Lights
Yifan Liu, Kun Xu, Ling-Qi Yan
Proceedings of the Eurographics Symposium on Rendering, 2019

Paper Code

Fractional Gaussian Fields for Modeling and Rendering of Spatially-Correlated Media
Jie Guo, Yanjun Chen, Bingyang Hu, Ling-Qi Yan, Yanwen Guo, Yuntao Liu
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2019)

Paper BibTeX Video Supplementary

Accurate Appearance Preserving Prefiltering for Rendering Displacement-Mapped Surfaces
Lifan Wu, Shuang Zhao, Ling-Qi Yan, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2019)

Paper BibTeX Video Slides Code & Data

Rendering Specular Microgeometry with Wave Optics
Ling-Qi Yan, Miloš Hašan, Bruce Walter, Steve Marschner, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2018)

Paper BibTeX Video Supplementary Code

A BSSRDF Model for Efficient Rendering of Fur with Global Illumination
Ling-Qi Yan, Weilun Sun, Henrik Wann Jensen, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2017)

Paper BibTeX Video Supplementary

Multiple Axis-Aligned Filters for Rendering of Combined Distribution Effects
Lifan Wu, Ling-Qi Yan, Alexandr Kuznetsov, Ravi Ramamoorthi
Proceedings of the Eurographics Symposium on Rendering, 2017

Paper Video

An Efficient and Practical Near and Far Field Fur Reflectance Model
Ling-Qi Yan, Henrik Wann Jensen, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2017)

Paper BibTeX Video Project Page and Data

Antialiasing Complex Global Illumination Effects in Path-space
Laurent Belcour, Ling-Qi Yan, Ravi Ramamoorthi, Derek Nowrouzezahrai
ACM Transactions on Graphics, 2016

Paper BibTeX Video

Position-Normal Distributions for Efficient Rendering of Specular Microstructure
Ling-Qi Yan, Miloš Hašan, Steve Marschner, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2016)

Paper BibTeX Video Code

Physically-Accurate Fur Reflectance: Modeling, Measurement and Rendering
Ling-Qi Yan, Chi-Wei Tseng, Henrik Wann Jensen, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2015)

Paper BibTeX Video Database

Fast 4D Sheared Filtering for Interactive Rendering of Distribution Effects
Ling-Qi Yan, Soham Uday Mehta, Ravi Ramamoorthi, Fredo Durand
ACM Transactions on Graphics, 2015

Paper BibTeX Video Code Snippet

Rendering Glints on High-Resolution Normal-Mapped Specular Surfaces
Ling-Qi Yan*, Miloš Hašan*, Wenzel Jakob, Jason Lawrence, Steve Marschner, Ravi Ramamoorthi
(*: dual first authors)
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2014)

Paper BibTeX Video Supplementary Code

Discrete Stochastic Microfacet Models
Wenzel Jakob, Miloš Hašan, Ling-Qi Yan, Jason Lawrence, Ravi Ramamoorthi, Steve Marschner
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2014)

Paper BibTeX Video

Accurate Translucent Material Rendering under Spherical Gaussian Lights
Ling-Qi Yan, Yahan Zhou, Kun Xu, Rui Wang
Computer Graphics Forum (Proceedings of Pacific Graphics 2012)

Paper BibTeX Slides

Ph.D. Dissertation

Physically-based Modeling and Rendering of Complex Visual Appearance
Lingqi Yan, Advised by Ravi Ramamoorthi (Summer 2018)
Doctor of Philosophy in Computer Science in the
Graduate Division of the University of California, Berkeley

2019 ACM SIGGRAPH Outstanding Doctoral Dissertation Award

Dissertation Citation Ceremony Slides IEEE Dissertation Impact

Misc

I am a huge fan of video games. In fact, this is the reason why I made up my mind to take rendering and Computer Graphics as my lifelong career when I was in primary school. We had a Hearthstone team at UC Berkeley and we made to the playoffs in the TeSPA Hearthstone Collegiate National Championship. I used to play PUBG but recently our team (FYI, SoEasy) has shifted interest towards Apex Legends, and we hit Platinum in Season 2 and Season 6. Here is a screenshot of chicken dinner we had recently.

I play piano a little bit, but classic only (with a National Piano Certificate of Level 10 in China, topmost for non-professional amateurs). I'm especially fond of Chopin's. Here are some short recordings of my home performance (F. Chopin: Waltz Op. 64. No. 2 in C-Sharp Minor, Nocturne Op. 9 No. 1 in B-Flat Minor and Op. 9 No. 2 in E-Flat Major). I'll upload more as my website continues to update.

My legal name spelling should be Lingqi Yan, and I only use Ling-Qi Yan for publications (due to some lab traditions at Tsinghua University). My name is pronounced as Ling--Chi--Yen, and here are some funny mistakes about how people usually call me (and I like them all).

"Lingqi Yan, first of his name, the unrejected, author of seven papers, breaker of the record, and the chicken eater." -- Born to be Legendary, by Lifan Wu @ UCSD.