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7.11.6 Tripwire detection
Enable tripwire: The tripwire function detects whether an object crosses a
virtual line in the video image in a certain direction or both
directions. Then, an event can be triggered.
Preview video: configure the virtual line here.
Max. size: This function determines the maximum size of the object to be
detected. This is done by drawing a rectangle in the preview
video. The rectangle can be drawn anywhere in the preview
video.
Min. size: This function determines the minimum size of the object to be
detected. This is done by drawing a rectangle in the preview
video. The rectangle can be drawn anywhere in the preview
video.
Drawing: a virtual line appears in the preview video after the button is
pressed. It is then possible to click on this line and move it
using the mouse and the red corner points. "A" and "B"
indicate the directions.
Delete: delete the virtual line
Virtual plane: number of available virtual lines: 4
Direction: definition of the direction(s) in which an object crosses and triggers
an event.
Sensitivity: The higher the value, the earlier a crossing object is detected.
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