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Demonstration Every number on this site is computed from real pipeline output at build time.

Alert evidence

Every alert can persist an annotated snapshot. A stratified sample was labelled by hand: 815 verdicts across three soak runs. These are the frames the reviewer saw, true detections beside the false alarms that measured and then improved each detector.

near-miss

Annotated near_miss alert frame from camera 3238 — Figure 1. Camera 3238, gap px 8.5. Verdict: marked real by the reviewer.

Annotated near_miss alert frame from camera 3252 — Figure 2. Camera 3252, gap px 1.7. Verdict: marked real by the reviewer.

Annotated near_miss alert frame from camera 3238 — Figure 3. Camera 3238, gap px 15.8. Verdict: marked not real; alarms like it set the detector gates.

Annotated near_miss alert frame from camera 3252 — Figure 4. Camera 3252, gap px 1.5. Verdict: marked not real; alarms like it set the detector gates.

tailgating

Annotated tailgating alert frame from camera 3238 — Figure 5. Camera 3238, time gap s 0.51. Verdict: marked real by the reviewer.

Annotated tailgating alert frame from camera 3252 — Figure 6. Camera 3252, time gap s 0.7. Verdict: marked real by the reviewer.

Annotated tailgating alert frame from camera 3238 — Figure 7. Camera 3238, time gap s 0.77. Verdict: marked not real; alarms like it set the detector gates.

Annotated tailgating alert frame from camera 3252 — Figure 8. Camera 3252, time gap s 0.55. Verdict: marked not real; alarms like it set the detector gates.

pedestrian or cyclist in the roadway

Annotated vru_intrusion alert frame from camera 3252 — Figure 9. Camera 3252, cell vehicle hits 4985. Verdict: marked real by the reviewer.

Annotated vru_intrusion alert frame from camera 3379 — Figure 10. Camera 3379, cell vehicle hits 48. Verdict: marked real by the reviewer.

Annotated vru_intrusion alert frame from camera 3238 — Figure 11. Camera 3238, cell vehicle hits 38. Verdict: marked not real; alarms like it set the detector gates.

Annotated vru_intrusion alert frame from camera 3252 — Figure 12. Camera 3252, cell vehicle hits 62. Verdict: marked not real; alarms like it set the detector gates.

wrong-way

Annotated wrong_way alert frame from camera 3238 — Figure 13. Camera 3238, heading share 0.0028. Verdict: marked real by the reviewer.

Annotated wrong_way alert frame from camera 3252 — Figure 14. Camera 3252, heading share 0.0022. Verdict: marked real by the reviewer.

Annotated wrong_way alert frame from camera 3238 — Figure 15. Camera 3238, heading share 0.0167. Verdict: marked not real; alarms like it set the detector gates.

Annotated wrong_way alert frame from camera 3252 — Figure 16. Camera 3252, heading share 0.0097. Verdict: marked not real; alarms like it set the detector gates.