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Fengshi Zheng committed Dec 28, 2023
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Here's a pdf version of my [CV](/files/cv.pdf)

Education
======
Undergraduate at Tsinghua University(THU), Beijing, China
* Majored in Physics Department, 2016 - 2018
* Changed major into Computer Science and Technology Department, 2018 - 2021
* Expected to graduate in July, 2021
* Major GPA: **3.91** Rank: **2**/204
* Overall GPA: **3.89** Rank: **4**/204

Scholarship & Awards
======
* China National Scholarship (Top 1%), 10/2020
* Comprehensive Excellence Scholarship (Top 7%) at Computer Science and Technology Department, THU, 10/2019
* Comprehensive Excellence Scholarship (Top 10%) at Physics Department, THU, 10/2017
* National Silver Prize, National Olympiad in Physics, 2015
* Provincial Second Prize, National Olympiad in Informatics, 2014

Publications
======
<ul>{% for post in site.publications %}
{% include archive-single-cv.html %}
{% endfor %}</ul>

Internship Experience
======
### Graphics Programmer at Bytedance, Summer 2020
* Product RD and Infrastructure, Bytedance Game Department
* Implemented a mobile-phone next-generation water/pool graphics effect solution based on the Unity Engine independently
* Features:
- **Ray tracing** based water rendering
- **GPU-level parallel** water wave simulation and real time caustics computation
- Screen space underwater effects and water-ball interaction
- Consistent with Unity's built-in shadowmap and lightmap
* Did a technical presentation among my leader and colleagues and received **supreme judgment**

Research Experience
======

### Graphics and Geometric Computing Group, THU
* Advised by [Prof. Kun Xu](https://cg.cs.tsinghua.edu.cn/people/~kun/), 10/2019 - Present
* Commercial project for Alibaba: enhancement to a renderer based on NVIDIA’s Optix library
- Added useful features like accepting/casting shadows, primary visibility to the renderer
- Parsed camera and scene geometric information from FBX files
- Implemented a shadowmap computing algorithm
* Academic research: a consistent denoising algorithm for Monte Carlo rendering (on-going)
- Derived the problem's mathematical formula
- Did in-depth research and found a variant of conjugate gradient algorithm to solve the problem efficiently and effectively

### Pervasive Human-Computer Interaction Group, THU
* Advised by [Prof. Chun Yu](http://pi.cs.tsinghua.edu.cn/lab/people/ChunYu/), 01/2019 - 05/2019
* Published *ProxiTalk: Activate Speech Input by Bringing Smartphone to the Mouth* to IMWUT 2019
* Main duties:
- Second student author
- Handled part of the image/voice data processing and analyzing work
- Tackled the gesture recognition problem with neural and tradition machine learning methods
- Conducted a 20-user data collecting experiment and a 60-user evaluation experiment

Selected Course Performance
======

### Fundamentals of Computer Graphics (A)
* Implemented a C++ physically-based CPU renderer
* [Project repo](https://github.com/JamesZFS/Pharosa)
* Highlighted features:
- Incorporates a vector/matrix math library without external library support
- Supports the path tracing and the **stochastic progressive photon mapping** global illumination algorithm
- Supports the KD tree scene acceleration structure and complex triangle mesh scene files
- A flexible and extensible system strictly following object oriented principles

### Human-Computer Interaction Theory and Technology (A-)
* Proposed and researched on a mobile phone camera interaction app - *IntelliZoomer*
* [Project repo](https://github.com/JamesZFS/IntelliZoomer)
* Leader of a three-student group
* Core features:
- Exploits the distance information from front camera to adjust the back camera's zoom ratio
- Detects the smiling gesture of the user to trigger "capture"
- Integrates iPhone 11's state-of-the-art multi-camera session and vision techniques
* Conducted a 14-user evaluation experiment and proved our proposed app's advantages over current camera apps
* Enrolled in the most prestige science & innovation competition in THU - "**The Challenge Cup**" - and won the third prize

### Service Oriented Software Design and Development (A+)
* Designed and implemented an intelligent COVID-19 data visualizing & analyzing system - *AntiNCP*
* [Our website](http://129.204.207.38/#)
* In charge of backend construction, algorithm integration, operation & maintenance and UI framework design
* Highlighted features:
- Collects pandemic data and news articles automatically and periodically
- Extract trend words and topics from articles using Tf·Idf model and clustering algorithms
* Achieved the **highest completion** among all groups in the course
* Served **more than 6,000 users** till now

### Software Engineering (A)
* Implemented an online live teaching platform for Jisuanke Company
* Made core contribution in the group and impressed the clients
* [Project repo](https://github.com/JamesZFS/AwesomeCoding)
* Became one of the **teaching assistants** of this course in the second year
- Helped my peer students learn the essence of software developing principles (git cooperation, code style, etc.)
- Guided 5 groups on developing a cloud resource computing and task execution platform

### Computer Organization (A-)
* Designed a MIPS32 CPU in Verilog with 2 other students
* [Project repo](https://github.com/JamesZFS/MIPS-CPUer)
* Highlighted features:
- Supports around 30 kinds of basic and interruptive MIPS32 instructions
- Supports several peripherals including DVI video output and flash storage
- Contains a fixed-point numerical system and a **three-body problem** simulator/visualizer in MIPS assembly

### Principles and Practice of Compiler Construction (A)
* Enhanced a decaf language compiler implemented in Rust
* [Project repo](https://github.com/JamesZFS/Decaf)
* Added **functional programming** features to the basic decaf grammar (such as lambda expressions and first-class functions)
* Added some compiling optimization actions along with an implementation of a renowned iterative global register allocation algorithm
# Education

### Master of Computer Science at ETH Zurich, Switzerland
- Sep. 2021 - Jul. 2024 (expected)
- Major in visual computing
- **GPA: 5.8/6.0**

### Bachelor of Computer Science in at Tsinghua University, Beijing, China
- Majored in Physics, Sep. 2016 - Jul. 2018
- Changed major into Computer Science and Technology, Sep. 2018 - Jul. 2021
- **GPA: 3.89, Rank: 4/204**

-----

# Scholarship & Awards

- **China National Scholarship** (Top 1%), Oct. 2020
- Comprehensive Excellence Scholarship (Top 10%) at Computer Science and Technology Department, Tsinghua, Oct. 2019
- Comprehensive Excellence Scholarship (Top 10%) at Physics Department, Tsinghua, Oct. 2017
- Third prize in The Challenge Cup (science and innovation competition) of Tsinghua, Oct. 2020
- National Silver Prize, Chinese National Olympiad in Physics, 2015
- Provincial Second Prize, Chinese National Olympiad in Informatics, 2014

-----

# Research Experience

### [Computer Graphics Laboratory](https://cgl.ethz.ch/), ETH, Zurich, Switzerland
- Master thesis, Dec. 2023 - Jul. 2024 (expected)
- Research on spatial subdivision for path guiding.

### Rendering Group, [Disney Research Studios](https://studios.disneyresearch.com/about-us/), Zurich, Switzerland
- Semester thesis, Apr. 2023 - Jul. 2023
- Research on improving the path sampling for realistic image synthesis using machine learning methods.
- Got overall grade 6.0/6.0

### [Realistic Graphics Lab](https://rgl.epfl.ch/), EPFL, Lausanne, Switzerland
- Summer research intern, Jun. 2022 - Sep. 2022
- Polish and extend kernel caching features in [Dr.Jit](https://rgl.epfl.ch/publications/Jakob2022DrJit), a just-in-time compiler for inverse rendering.

### [Graphics and Geometric Computing Group](https://cg.cs.tsinghua.edu.cn/), Tsinghua University, Beijing, China
- Undergraduate research fellow & bachelor thesis, Oct. 2019 - Jun. 2021
- Second author of [Ensemble Denoising for Monte Carlo Renderings](https://cg.cs.tsinghua.edu.cn/people/~kun/2021denoising/Ensemble_Denoising_SIGA2021_small.pdf).
- Published at SIGGRAPH Asia 2021.

### [Pervasive Human-Computer Interaction Group](https://pi.cs.tsinghua.edu.cn/), Tsinghua University, Beijing, China
- Undergraduate research fellow, Jan. 2019 - May 2019
- Third author of a [ProxiTalk](https://dl.acm.org/doi/abs/10.1145/3351276), a novel mobile phone interaction technique.
- Published at IMWUT 2019.

-----

# Work Experience

### ByteDance Inc, Shanghai, China
- Graphics programming intern at game department, Jun. 2020 - Sep. 2020
- Develop real-time real-tracing water pool graphics effects in Unity Engine.
- Parallelize wave simulation and caustics computation on GPU.

### SIGA Services AG, Ruswil, Switzerland
- Software engineer intern, Mar. 2022 - Jun. 2022
- Develop OpenGL solutions to render point clouds with Xamarin.

-----

# Selected Course Projects

## Master Courses, ETH Zurich

### Computer Graphics (6.0/6.0)
- Implement a physics-based renderer based on [Nori](https://cgl.ethz.ch/teaching/cg22/www-nori/index.html), an tutorial rendering framework.
- Advanced features:
- Render participating media (clouds, smoke, etc) with multiple importance sampling.
- Implement Disney BSDF, an appearance model widely used in production.
- Procedural generation of a night city scene.

### [Scientific Visualization](https://github.com/JamesZFS/zwickypixies)
- Develop a real-time visualization application for cosmology simulation based on VTK library.
- Support interactive rendering of various particle properties (temperature, potential, velocity, etc).

### [Physics-based Simulation](https://github.com/Fiona730/Position-Based-Fluids-Taichi) (5.75/6.0)
- Implement [position based fluid](https://mmacklin.com/pbf_sig_preprint.pdf) simulation based on [Taichi](https://www.taichi-lang.org/).
- Handle fluid-solid interaction through collision detection.

### [Advanced Systems Lab](https://github.com/Fiona730/SPPM-CPU-Optimization?tab=readme-ov-file) (5.75/6.0)
- Implement and optimize [stochastic progressive photon mapping](https://cs.uwaterloo.ca/~thachisu/sppm.pdf), an offline rendering algorithm.
- Achieve a fully vectorized (SIMD) implementation with 22.7x speedup compared to the baseline.

## Bachelor Courses, Tsinghua University

### [Service Oriented Software Design and Development](https://github.com/JamesZFS/AntiNCP) (A+)
- Design and develop a web-based system to analyze and visualize COVID-19 related information.
- Integrate a web crawler to update COVID data and news periodically.
- Apply clustering and statistical methods to extract the topics and keywords of news.
- Design a beautiful frontend for visualizing geological and timeline data of diversed types.

### [Fundamentals of Computer Graphics](https://github.com/JamesZFS/Pharosa) (A)
- Implement a C++ physically-based renderer from scratch.
- Advanced features:
- [stochastic progressive photon mapping](https://cs.uwaterloo.ca/~thachisu/sppm.pdf) global illumination algorithm.
- ray intersection with Bezier surfaces through Newton's method.
- parse scene files from JSON.

### [Fundamentals of Search Engine Technology](https://github.com/JamesZFS/ElasticJury) (A)
- Develop a search engine for judiciary cases.
- Implement a high-performance and high-concurrency GoLang backend.
- Create dedicated MySQL commands to do fast and complex search queries.
- Design and implement an intuitive and user-friendly frontend.

### [Human-Computer Interaction Theory and Technology](https://github.com/JamesZFS/IntelliZoomer) (A-)
- Propose and research on a mobile phone camera interaction app
- Core features:
- Adjust the back camera's zoom ratio with the front camera's depth information.
- Auto "capture" triggering by smile detection.
- Conduct a 14-user evaluation experiment and prove the effectiveness of our proposed app.

### [Computer Organization](https://github.com/JamesZFS/MIPS-CPUer) (A-)
- Design and implement a MIPS32 CPU in Verilog.
- Highlighted features:
- Capable of running a tutorial operating system.
- Support several peripherals including DVI video output and flash storage.
- A fixed-point numerical system and a three-body problem simulation demo in MIPS assembly.

### [Principles and Practice of Compiler Construction](https://github.com/JamesZFS/Decaf) (A)
- Enhance a Java-like language compiler implemented in Rust.
- Add functional programming features including lambda expressions and first-class functions.
- Implement some compiling optimization actions and an [iterative global register allocation algorithm](http://www.cse.iitm.ac.in/~krishna/cs6013/george.pdf).

### [Software Engineering](https://github.com/JamesZFS/AwesomeCoding) (A)
- Develop a web-based live teaching platform for [Jisuanke Company](https://www.jisuanke.com/).

### Foundation of Object-Oriented Programming (A)
* Designed and implemented two **physically-based** 2D games
* [Project 1 repo](https://github.com/JamesZFS/Warzone), [Project 2 repo](https://github.com/JamesZFS/Plongeur)
* Based on Qt and Google’s LiquidFun physics library

Skills
======
* Programming skills
- Master C, C++, Python, JavaScript
- Design and implement two physically-based 2D games based on Qt and [LiquidFun](https://google.github.io/liquidfun/) physics engine.
- [Repo 1](https://github.com/JamesZFS/Warzone), [repo 2](https://github.com/JamesZFS/Plongeur)

-----

# Skills

- Programming
- Proficient in C/C++, Python, JavaScript
- Familiar with Go, Rust, MySQL, Swift, C#, Assembly, Mathematica, Unity
* Language skills
- Mother tongue: Chinese
- TOEFL 105 (reading 28, listening 27, speaking 24, writing 26)
- GRE Verbal 156, Quantitative169, AW 4.0
- A little French
* Hobbies & others
- Swimming, fitness, diving, skiing
- Saxophone, piano, chorus, a cappella, musical
- Language
- Chinese: Native
- English: Fluent
- TOEFL 105 (reading 28, listening 27, speaking 24, writing 26)
- GRE Verbal 156, Quantitative 169, AW 4.0
- French: Intermediate (B1)
- German: Beginner (A1)

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