Line Crossing

v1.1.0perimeter

Tripwire counting and alerts — tallies every tracked object crossing a drawn line per direction and hour, and alarms on each crossing, on a count threshold, or only at night.

What it needs

object_detectionserved by Tier-0, on by default

Satisfied by YOLOv8 — or any adapter advertising the task.

multi_object_trackingneeds an adapter enabled

Satisfied by ByteTrack — or any adapter advertising the task.

What it publishes

These land on your own event bus, where any other app, automation or integration can pick them up.

  • line-crossing
  • passthrough

What it can reach

nothing outside OpenNVRApps run on an isolated network with no route to your camera network or the internet. This one asks for no exceptions.

Read its docsSourceAll apps

Maintained by OpenNVR. Built on theOpenNVR App SDK.