# OhnoTrash

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [AL MAIMUN AS SAMEE](https://cerebralvalley.ai/u/assamee123)
- **GitHub:** https://github.com/assamee123/ohmytrashagent.git
- **Demo video:** https://youtu.be/8jy_dY7i2Mc?si=Wnjz6yPH7JHPmYso
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2217

An autonomous GeoAI agent that finds and maps illegal roadside waste dumps from street-level imagery, for any city with coverage. It resolves a place name or drawn area, pulls Mapillary imagery, screens each scene with a vision-language model, and segments detected waste with SAM 3 to get pixel-precise masks. Where the models disagree, it pauses for a human reviewer. Verified detections become interactive map layers, and a PostGIS time series tracks waste per grid cell over time. The pipeline is zero-shot, with no training data or city-specific tuning. Dhaka (Kaliganj, Gazipur) is only the demo city, so it transfers to any place with volunteered street-view imagery. The approach is peer-reviewed (ISPRS Annals XII-4/W2-2026, doi 10.5194/isprs-annals-XII-4-W2-2026-9-2026). Municipalities in places without budgets for dedicated waste surveys can use it to see where waste accumulates.

## More from Meta Global AI Developer Hackathon

- [Capin](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2214)
- [BolSaakshi](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2215)
- [Neural Nexas](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2216)
- [MetaHackers](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2218)
- [CallOrder](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2219)
- [Stephen Pasco](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2220)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2217. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt