Physics Simulation · April 2026
Sand2016
A physics-based material point method sand simulator with Drucker–Prager elastoplasticity, return mapping, hardening, and friction-angle control.
Graphics developer / AI researcher
Hanzhang (Henry) Yin
buildAI(world).verify({ rendering: CONSISTENT, motion: PHYSICALLY_VALID, behavior: INTENT_ALIGNED });
Master's student in Computer Science at Brown University, working at the intersection of graphics, simulation, and embodied AI.
01 / Graphics Research & Development
Selected work.
A focused selection across reasoning, neural rendering, physical simulation, and real-time graphics.
Realtime Rendering · June 2026
ReSTIR-GS
An experimental Gaussian Splatting pipeline adapting ReSTIR-style reservoir resampling for visibility-aware reuse across pixels and frames.
Realtime Graphics · December 2025
Amazing Terrain
A procedural environment renderer with fBm terrain, layered PBR materials, L-System vegetation, weather, water, fog, and instanced rendering.
02 / AI & Computational Research
Research beyond graphics.
Work across clinical machine learning and generative imaging, with an emphasis on systems that can be tested rather than merely observed.
R.01
Medical AI · University of Rochester / URMC · 2024–2026
PRISM: PD End-of-Life Prognostication
A Parkinson's-disease-specific machine learning model for six-month end-of-life prognostication among nursing home residents, evaluated against Medicare hospice guidelines.
R.02
AI-designed cover
Generative Imaging · Tsinghua AIR Lab · 2024
Image Compression and Generation
Investigating how Deep Contextual Video Compression and Diffusion Posterior Sampling can combine compression, denoising, and generative reconstruction.
03 / Experience & Teaching
Experience & teaching.
Software Development Engineer Intern
Jun–Aug 2023
KeeperAI
- Developed and enhanced front-end experiences with JavaScript and Fluent UI.
- Integrated external NLP chatbot plugins for event scheduling inside Microsoft Teams.
- Resolved login-verification vulnerabilities by redesigning regular expressions and account-verification logic across web and database APIs.
Teaching Assistant & CSUG Tutor
Undergraduate
University of Rochester
- CSC 242: Introduction to Artificial Intelligence.
- MATH 141: Calculus I and MATH 162: Calculus II.
- Tutored students across computer science and mathematics.
04 / Projects & Experiments
Projects & experiments.
Experiments, studies & interactive projects
Reinforcement Learning · 2024
Belief-Aware Multi-Agent RL Arena
A belief-aware agent for partially observable, stochastic grid combat.
History of Mathematics · 2024
The Ancient Roots of Linear Algebra
A study of rectangular-array methods in The Nine Chapters on the Mathematical Art and their relationship to modern linear algebra.
05 / Developer Tools
Tools.
Small, focused utilities for everyday development and visual computing.
Classical Computer Vision · 2024
QR Code Scanner
Sauvola binarization, geometric pose estimation, and Kalman-filtered tracking.
Ithaca, New York
06 / Profile
About me.
Hi, I'm Hanzhang — you can call me Henry. I am pursuing an Sc.M. in Computer Science at Brown University, advised by Daniel Ritchie. I earned dual B.S. degrees in Computer Science and Applied Mathematics from the University of Rochester.
My work tends to begin with the same question: how can we make intelligent systems easier to understand, test, and trust when they interact with complex visual or physical environments?
Computer Graphics
Simulation
Embodied AI
Machine Learning
Computer Vision
Verification