video analytics week ending 2 19 12
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Findings and Notes 16 alerts active this week, 351 total alerts 138 true positives, 213 false positives NYSE C15:

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video analytics week ending 2 19 12

Findings and Notes

  • 16 alerts active this week, 351 total alerts
  • 138 true positives, 213 false positives
  • NYSE C15:
    • Decrease in FPs this week due to less camera movement by security personnel on NYSE C15 camera-1003. However FPs caused by reflections and camera movement continue to be a problem. This accounted for 25% of this camera’s FPs.
    • The fixed position of NYSE C15 changed early in the week causing an incorrect Region of Interest (RoI). This accounted for 30% of this camera’s FPs. Re-aiming camera does not eliminate reflections. It must be shielded from the light source
    • Field testing configuration changes: using Regions of Un-interest and camera movement detection
  • FEDRS FRB#02:
    • Continued high FPs on this camera
    • Field testing configuration change using an aspect ratio filter to ignore loitering people
  • NYMEX C1:
    • Surge in FPs this week
    • Caused by traffic lights reflecting off wet pavement at night
    • No immediate solution

Video Analytics – Week Ending 2/19/12

All (2.2)

No Obj(1.3)

(averages taken over weeklong periods, excepting when cameras are down)

video analytics week ending 2 19 121

Video Analytics – Week Ending 2/19/12

AP-Abandoned Pkg L-Loitering GA-Gate Activity M-Motion

video analytics tracking true positives

Findings and Notes

  • 138 true positives
  • 8 staged events
  • Fewer TPs this week due to a decrease in guard activity at NYSE and maintenance at service elevator. Guard is still present at NYSE.

Video Analytics – Tracking True Positives

The number of true positives is not a direct indicator of the accuracy of the SVS system, because activity varies from week to week. Instead, the number of true positives is indicative of the operational environment.

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