For the complete documentation index, see llms.txt. This page is also available as Markdown.
Line Crossing Detection
Detect or count objects that cross a defined line, and generate an event.
Line crossing detection can be used to detect or count objects which cross a defined line. The postprocessor works by tracking objects through the frames, and detect when this object crosses a line, and the direction.
Line Crossing Detection settings
Use the Nx Meta interface to draw a line on the video frame and click Apply for changes to take effect.
When a crossing is detected, an event is generated. This event can be configured to trigger any action, see adding event rules.
Line Crossing Detection event configuration
Select the Line Crossing Detection postprocessor and click Apply before creating the event.
Line Crossing Detection is compatible with any model which generates bounding boxes.
