Le Qin

Come in.

Go on then.

Projects

Research and coursework from Michigan, plus things I've built since. My work at Amazon is sketched rather than described — the specifics stay internal. Where there is something to try or watch, the panel on the card opens it.

AWS Observability Analytics

2023 – present

Day job. I work on services that ingest, store, and query telemetry at AWS scale, and on the console surfaces engineers use to investigate incidents. Specifics stay internal.

Investigate a synthetic incident

AWS Observability Analytics

Scrub or play the incident timeline, filter by service or trace span, then test a working hypothesis.

JavaAWSDistributed systems

Fitts's Revenge

Aug 2026

The splash screen on this site, and an empathy device. Fitts's Law says the time to hit a target falls out of its size and distance; this one refuses both, fleeing to wherever your cursor is not heading. A keyboard walks straight in, because the law never governed Tab and Enter — the same barrier a lot of people meet every day, pointed the other way round for once.

AstroTypeScriptCSSa11y

Body Dimension Estimation from Clothed 3D Scans

May – Aug 2022

Research at the University of Michigan Transportation Research Institute under Dr. Byoungkeon Daniel Park. Built a standalone tool that recovers body measurements from scans of clothed subjects, so studies no longer need subjects scanned in fitted clothing.

Explore the recovered pipeline

Body Dimension Estimation from Clothed 3D Scans

Drag the synthetic scan to rotate it, select any of nine camera views, step through the pipeline, and adjust the confidence threshold.

PythonComputer vision3D geometry

AR Tree-Planting Game

Oct 2022

Two-person augmented reality game built for a Michigan XR course. Players plant and tend trees anchored to real surfaces in their surroundings.

Play the recovered game loop

AR Tree-Planting Game

Switch between Plant and Interact, place an acorn, choose inventory items, water the tree, and collect its seed.

UnityAR FoundationC#

VR Lab Classroom

Oct 2022

Virtual reality recreation of a university lab classroom, built with a teammate for a Michigan XR course, with interactive elements added on top of the faithful reconstruction.

Enter the recovered classroom

VR Lab Classroom

Use WASD or arrows to move, Q/E to turn, Space to interact, or use the on-screen controls and piano keys.

Unreal EngineBlueprintsVR

AR Navigator

Nov 2022

Accessibility-minded augmented-reality wayfinding prototype that detects or learns a target, then guides the user to it with an arrow, radar, spatial audio, and haptic feedback.

Try the recovered interaction

AR Navigator

Choose a mode and target, drag Phone heading, or use N to cycle, P to ping, and M to switch modes.

UnityAR FoundationBarracudaC#