Utility Perimeters
Use fixed views that include both the fence line and the ground below it.
Damaged Fence Detection for Perimeter Review
A missing section, fallen panel, or open gap can change a perimeter’s condition. StreamVLM™ can route that visible condition to an operator for inspection.
The Visible Condition
Give the Operator a Frame to Review
The condition in scope is a missing, broken, displaced, or visibly open section of a fence or barrier. It is a visible scene detail, not a diagnosis, a conclusion about intent, or an automatic decision.
In StreamVLM™, an authorized operator writes a prompt such as “Alert when a perimeter fence has a visible gap.” The model evaluates selected live frames against that prompt and sends a match, camera, location, and time into the IREX event workflow for human review.
StreamVLM™ runs on a GPU node in the customer instance. Each prompt has its own confidence threshold, alert cooldown, event type, and camera selection.
Explore StreamVLM Prompt DetectorsWhere It Helps
Set the Prompt Where the Condition Matters
Storage Yards
Compare the alert with the live image and prior inspection records where available.
Public-Site Boundaries
Create a maintenance or security task only after a person confirms the condition.
Illustrative Camera Frames
What the Operator Reviews
These illustrative frames show the kind of visible condition a prompt can surface. They are not real incidents, deployments, or proof of detection accuracy.
Perimeter gap
A Visible Gap in the Fence
A missing panel creates a clear opening. Staff inspect the actual perimeter and check the repair schedule.
From Prompt to Action
A Review Workflow for This Condition
- 01
Identify High-Value Fence Sections
Write a concise prompt for a missing, broken, displaced, or visibly open section of a fence or barrier, then select the cameras and times where the condition warrants attention.
- 02
Confirm the Gap Is a Barrier Issue Rather Than Temporary Occlusion
Open the event with its camera, location, time, and available video context. Confirm what is visible before treating the match as actionable.
- 03
Assign Inspection or Repair through the Local Workflow
The authorized team applies the local procedure. StreamVLM supplies a review cue; it does not decide the response.
Limits to Test
Validate It on the Actual Cameras
- Scene Context
- Vegetation, shadows, snow, and parked equipment can obscure a fence line.
- Camera Fit
- The intact fence and the suspected gap need to be visible at a useful scale.
- Human Decision
- A match cannot establish how or when damage occurred, or whether entry occurred.
FAQ
Can it tell whether someone cut the fence?
No. The prompt concerns the visible state of the barrier. It does not determine cause, time of damage, or responsibility.
Can StreamVLM confirm damaged fence?
No. It reports a match to the visible condition in the prompt. An operator reviews the frame and local context before deciding what it means.
How should a team tune the prompt?
Start with representative cameras, define what makes a useful alert, then adjust the camera selection, confidence threshold, and alert cooldown during a camera-specific pilot.
Is there a published accuracy figure for this use case?
IREX does not publish a universal accuracy figure for this prompt. Image quality, camera angle, lighting, occlusion, and the local definition of a useful alert all affect results.
Inspect Perimeter Gaps Earlier
Pilot on one fence run with a clear baseline view and a named owner for inspection and repair decisions.