I'm Zhiyu (Kevin) Sun, a student at McCallie School interested in the space between mathematics, artificial intelligence, and the physical world. This is a collection of questions I've followed and things I've made.
From computational imaging to hands-on engineering, each project begins with a question.
View full poster ↗I combine a DDPM image prior with Diffusion Posterior Sampling to reconstruct endoplasmic reticulum images. The selected PSF deblurring configuration improves PSNR from 25.19 to 31.88 dB and reaches SSIM 0.953. Pixel-wise uncertainty maps highlight regions that need careful interpretation.
A single trained prior was evaluated across four degradation operators.
View full poster ↗With Paul Fan, I built a wearable prototype that translates heading from a BNO085 IMU into directional vibration, using a Teensy 4.1 and ULN2803A motor drivers. The design has 16 motor positions; 12 motors were functioning at the time of the poster.
Bench verification completed. Human perceptual testing and long-term wear studies remain future work.
View full poster ↗I developed an Extended Kalman Filter framework that combines simulated IMU and GPS measurements to estimate attitude, velocity, and position. The simulation explores how GPS update frequency and process noise affect estimation accuracy.
A simulation-based framework demonstration; real-flight validation is future work. Mentor: Andrew Voss.
Through the CCIR one-on-one mentorship with Dr. Tsz Kiu Aaron Chow, I studied differential geometry and explored the catenoid and minimal surfaces.
Another kind of problem solving—through movement, persistence, and practice.
I have been a member of McCallie’s varsity climbing team since 2023. Climbing gives me a physical way to work through challenges and learn alongside others.
I like exploring how things work—whether through equations, a problem on a climbing wall, or the mechanism of a Rubik's Cube. Each offers a different way to learn by doing.
Research, coursework, leadership, and activities in one place.
Open full résumé · 3 pages ↗McCallie School · Expected graduation June 2027
Mathematics, artificial intelligence, and engineering.
Founder and president of the Rubik's Cube Club, varsity climber, math interest group member, volunteer tutor, and orchestra violinist.