Snap a messy whiteboard and get tidy Markdown notes with action items
Beginner8h1–2
Vision LLMMarkdownNext.js
17/20Room Photo Furniture Fit Checker
Photograph your room and check whether a sofa or desk will actually fit.
Advanced30h2–4 people13/20 fit
Build Room Photo Furniture Fit Checker for people furnishing a rented room in ~30h with 2–4 people. Stack: Vision LLM + three.js + Next.js.
Why it wins: Combines vision and 3D in a way judges can relate to.
Build flow
01 · Problem
People buy furniture that does not fit because estimating room space is hard.
02 · Solution
Use a reference object for scale, estimate floor dimensions from the photo, and overlay the product's real dimensions as a box you can drag.
03 · Build
- 1Detect the reference object
- 2Estimate floor plane dimensions
- 3Render a 3D box with three.js
- 4Compare against product size
04 · Demo
Use an A4 sheet as reference and show a desk that does not fit by 12 cm.
MVP checklist
- Scale from reference object
- Product dimension overlay
- Drag to place
- Fit warnings
Tech stack
| Tech | Role | |
|---|---|---|
| Vision LLM | Image understanding | AI |
| three.js | 3D rendering | UI |
| Next.js | Frontend + API routes | Web |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
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