Service Yards
Apply the prompt only to views and hours where the area is normally closed.
After Hours Intrusion Detection for Site Review
A person in an area that should be empty after closing can warrant a review. StreamVLM™ pairs that visible condition with the cameras and times you choose.
The Visible Condition
Give the Operator a Frame to Review
The condition in scope is a person entering or remaining in a selected site area during the hours set by the operator. 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 on anyone in the service yard after hours.” 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
Campus Approaches
Give the reviewer an up-to-date contractor and maintenance context where available.
Perimeter Entrances
Route verified access concerns through the site’s existing security procedure.
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.
After-hours intrusion
At the Fence Line
A lone person at a closed perimeter prompts a review of the live scene and the site schedule.
After-hours intrusion
Beyond the Lit Perimeter
The visible presence is a review cue. Site staff determine whether access is expected or requires a response.
After-hours intrusion
A Perimeter Crossing
The operator verifies the camera context before applying the established security procedure.
From Prompt to Action
A Review Workflow for This Condition
- 01
Set the Area and Hours
Write a concise prompt for a person entering or remaining in a selected site area during the hours set by the operator, then select the cameras and times where the condition warrants attention.
- 02
Check Whether the Person Has an Expected Reason to Be There
Open the event with its camera, location, time, and available video context. Confirm what is visible before treating the match as actionable.
- 03
Send a Verified Concern to Site Security
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
- Staff, contractors, and authorized visitors can produce valid visible matches.
- Camera Fit
- The detector needs a defined camera area and a schedule that reflects site operations.
- Human Decision
- A frame does not determine authorization, intent, or whether a person poses a threat.
FAQ
Will a night-shift worker trigger this prompt?
They may. Camera selection, schedule, and prompt wording should reflect the site’s real operating pattern, and the reviewer confirms authorization.
Can StreamVLM confirm after-hours intrusion?
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.
Define an After-Hours Review Zone
Choose one site area with stable hours and an agreed security response before expanding to the rest of the perimeter.