About me
Hi, I'm Qianyue He! I am a graphics and HPC enthusiast, and I really enjoy coding just for fun. Some people might ask me, "Why did you start this project?" or "What is the commercial potential of your repo?" but I don't want to bother answering them. Why does everything have to bear some specific meaning? I think those things are cool, and if I can nail them, that will be awesome—simple as that. The knowledge I gain is just an extra bonus for me.
I am a master's student (will graduate in 2025) in AI in Tsinghua SIGS, where I did some minor stuff for time-of-flight rendering. I majored in automation and earned my Bachelor of Engineering in XJTU, and I believe XJTU is where I truly grew, technically, thanks to the help and guidance of several good friends and mentors. My life as an undergrad can be described as, I think, very fulfilling. I joined the RoboMaster team of our school for two years (2020-2021), in the vision group and took part in the group leader for one season (2021), where I built an awesome auto-targeting system with my friends. Later I was in the IAIR, working on CV and SLAM for two years. I like working on my own open-source projects in my free time (sounds nerdy, well I actually am). My recent focus is rendering, especially, ray tracing frameworks. I've tweaked many open-source renderers like Mitsuba, PBRT and Tungsten, and I've written two renderers: AdaPT and cuda-pt for fun. Also, I work as a pro-tem moderator for computer graphics StackExchange (2024~now). Being working hard for the community, I guess.
My interests are now shifting toward something more fundamental. I plan to work in the fields of AI infrastructure and compilers—they're so cool, aren't they? Wish me luck in my exploration. I assume I won't have the same state of mind when I am 30, so, gotta do something interesting when you are young.
Got married to my junior & senior high classmate in my 24! She is such a heavenly girl.
Education
Tsinghua University, SIGS
Xi'an Jiaotong University
Publications
🎯DARTS: Diffusion Approximated Residual Time Sampling for Time-of-flight Rendering in Homogeneous Scattering Media
ACM Transactions on Graphics (SIGGRAPH Asia), Dec 2024
SIGGRAPH Asia Longest Paper Name Award (2nd place, well this is made-up)
Thesis
Chain-representation-based real time high precision single line LiDAR SLAM system
Bachelor thesis (61 pages) in XJTU
In this thesis, a novel map representation named Chain Representation is proposed. This representation is sort of a mixture that has both the advantages of point cloud and occupancy map. The proposed SLAM system is compared against the SoTA method (in 2022): Google's cartographer, SLAM toolbox and the classic GMapping. The proposed method demonstrates faster mapping, higher accuracy and lower memory overhead. The code is not currently open-sourced.
Selected Personal Projects
The AdaPT renderer
2023.1~2024.11
A physically based renderer built in Taichi lang (python-like, JIT). This offline renderer supports steady state and transient state rendering, with undirectional, volumetric and bidirectional path tracing implementation. Textures, heterogeneous RGB density volumes and different kinds of emitters are supported. Customized Mitsuba-like XML scene parsing, with stackless SAH-LBVH ray-primitive acceleration.
CUDA-PT
2024.4~2024.12
A repo that teaches you how to write a CUDA software ray tracing renderer from scratch: a renderer with Analysis-Driven Optimization. The core logic and basic building blocks are all written from scratch in CUDA, and they are carefully profiled and optimized to have better performance. Definitely not a naive porting of CPU implementation. Megakernel path tracing, light tracing and wavefront path tracing are supported.
LiDARSim2D & LSMv2
2021.8~2022.8
Two different versions of 2D LiDAR simulators. The first version is written in C++, with OpenCV and ROS Rviz visualization. Supports exporting ROS bags of scan data, IMU data and etc.. The second version is written in Rust and CUDA, with nannou as its front-end visualization and GUI and CUDA based accelerated ray-intersection code as simulation backend. Both support map editting and customization.
The Ethians (Rougelike Game)
2019.1~2019.8
The first big project of mine, written during the first year of my undergrad. I love this rougelike game very much: I extracted the assets from an old mobile rougelike game called Dweller and rewrite all the game play in PyGame. The GUI and some of the art assets are designed and drawn on my own. I poured much time and effort into this, and till today, I can still say that it beats most of the undergrad Graduation Designs in our country (since most of them are so shitty).
6-axis Robot Simulator
2022.10
6-axis robot simulation in rviz and Gazebo, control implemented with ROS. Simple hand-deduced D-H forward-inverse kinematics implemented in Eigen. Simulated and visualized in RViz and Gazebo ROS implementation (melodic), with key control.
GigaMVS Novel View Synthesis Competition Solution
2023.4~2023.6
GAIIC 2023: giga-pixel novel view synthesis competition 4th place solution. Based on nerfstudio. The other two contributors are Dinnger and funnymudpeer. The ranks can be found in giga-vision's leaderboard for rendering challenge. The competition focuses on the novel-view synthesis problem under vast scenes and huge input images. We reproduced many SoTA works in this repo to obtain higher PSNR.