# TechNoir

- **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:** [Rajveer Kondeti](https://cerebralvalley.ai/u/Rajveer_Kondeti)
- **GitHub:** https://github.com/RajveerKondeti/scene-witness
- **Demo video:** https://youtu.be/_tubSFr8SQs
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2836

Scene Witness is an AI-assisted forensic scene documentation system that transforms recorded crime-scene walkthroughs into structured, visually grounded evidence records.

A critical challenge in forensic documentation is ensuring that visible scene details are systematically identified, reviewed and documented. Scene Witness helps address this by using Meta's SAM 3.1 to identify visible objects across extracted video frames and organize them into an interactive evidence graph.

Investigators can explore detected objects, trace them to their source observations and frames, review the visual inventory against an investigator-maintained checklist, and identify entries that have no matching visible inventory item.

Its key innovation is connecting visual observations, objects and evidence relationships in a navigable graph while using deterministic checks to surface potential documentation discrepancies.

The system also generates a draft scene report, helping turn visual scene review into structured documentation.

Scene Witness is designed to assist forensic professionals, not replace their judgment. All findings require human verification.

**See the scene. Trace the evidence. Verify the details.**

## More from Meta Global AI Developer Hackathon

- [veykor](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2833)
- [Team Mabel](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2834)
- [Triggersift](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2835)
- [Holo](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2837)
- [Soumya Das](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2838)
- [CyberPulse](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2839)

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