threshold

Per-class-threshold of primary detector.

Increasing the threshold restricts output to objects with higher detection confidence.

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roi-top-offset
roi-bottom-offset

Per-class top/bottom region of interest (RoI) offset.

Restricts output to objects in a specified region of the frame.

To reduce spurious detections seen on the dashboard of dashcams

detected-min-w
detected-min-h
detected-max-w
detected-max-h

Per-class min/max object width/height for primary-detector

Restricts output to objects of specified size.

To reduce false detections, for example, a tree being detected as a person