# Spidey Sense

- **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:** [Akash Narayanan](https://cerebralvalley.ai/u/Akashnarayanan07)
- **GitHub:** https://github.com/akashnarayanan07/kavacham.git
- **Demo video:** https://youtu.be/pzaCs9raICQ
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4835

Kavacham turns 90 seconds of phone video from a foot-overbridge into a junction-risk report so municipalities can build safety infra BEFORE crash, not after.

Problem: In India, Nairobi, Jakarta, Mexico City, junctions are unplanned and safety infra is built only AFTER a fatal crash. We have no low-cost way to audit risk.

Solution: Film 90 sec on any phone. Kavacham auto-reduces 700MB 4K 60fps to 22MB 720p 10fps CRF 18 Lanczos sharp (one-time download to verify quality), tracks EVERY road user with SAM 3.1 chunked 100 frames + 2 tiles 1440x1408 (32 cap) + stitching across chunk boundaries - 90 tracks 93 IDs 20 sec 10,523 detections (27 ped, 27 bike, 20 auto, 16 car) perfect no missing - major role. Geometry flags pairs <80px TTC<2.5s = 148 potential (135 close pass +13 ped crossing) Types auto/two-wheeler 28 auto/ped 25 ped/two-wheeler 21. Llama 4 Maverick verifies top 20 TTC sorted with RED TARGET1 GREEN TARGET2 + gap readout - Finds 1 real near-miss Conflict #70 Motorcycle #73 vs Scooter #83 closing 72px->24px 3px clearance TTC 1.37s Severity 6/6 at centre x435 y812 HIGH zone 68 potential. Individual tracking shows RED #73 GREEN #83 trajectory.

Safety Report PDF very detailed for officer + individual: Existing problems, every possible 148 explained, types pie chart, flowcharts close pass 72px->24px, how to avoid (wait 30px gap, use zebra), preventive measures infra building Lane marking white 100m Rs.15k fixes 15 bike-bike 30%, Zebra+Speed breaker+Refuge barricade Rs.25k+8k fixes 46 ped 40%, Convex mirror Rs.5k + Rumble Rs.8k fixes 45 Right. Perfect plan Total Rs.53k 1 week reduces 148->100 30% eliminates #70 type.

Animated Video 21 sec HD 1280x720 uses ONLY your uploaded junction real frame hotspot_real.png not generic AI illustration - 7 steps Before dangerous, Lane marking, Zebra+Breaker, Refuge, Mirror+Rumble, Final safe all fixes, Efficiency chart - View + Download like document.

Risk zones overlay on YOUR junction: RED Centre HIGH 68 1 real #70 circled, YELLOW Right MEDIUM 45, GREEN Left LOW 35 - Not generic.

Q&A Chatbot right side free space visible only after report generation: Voice or typed Hindi Tamil Telugu Kannada Malayalam Bengali English - Meta Voice Transcribe + Llama

## More from Meta Global AI Developer Hackathon

- [Vigil](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4832)
- [Last Minute Commit](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4833)
- [Tini](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4834)
- [Jazzy Fox](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4836)
- [Harbor](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4837)
- [Jehsh Philemon Mulwahali](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4838)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4835. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt