Minimum number of frames / minimum duration of event for detection of object in a zone

[Mincka]

I use almost everything possible to avoid false positive: min_area, max_area, masks, custom threshold (no less than default 0.7), and I'm also going to use min_ratio, max_ratio for edge cases, but I would love a minimum duration, or a minimum number of frames in a zone to avoid false positives.

From time to time, because of an bird, an insect, or a shadow with car lights or sun, I get a false positive for person detection, or because there is a person in an adjacent zone and there's of a short box extension (for just 1 frame), the bottom point used for the detection enters the zone and triggers my alarm automation.

I use -stream_loop on the clips to debug them and I see the person box in the zone for less than a second / or a single frame over the detection threshold. I know from the docs than threshold is based on the median of the history of scores (padded to 3 values) so it's often not because of a "single" frame.

Similarly to what's done for "Stationary Objects", I'd love the ability to also also a minimum number of frame to consider an object to be detected in a zone.

https://docs.frigate.video/configuration/stationary_objects

threshold is the number of frames an object needs to remain relatively still before it is considered stationary.

I only found a mention of this in this topic:
#3583 (comment)

[Mincka]

This is the kind of case I have.

Despite the min_ratio / max_ratio, when the subject entered the field of view, for a single frame, the object detection was in the yellow zone.
When the detection threshold was above 0.7 a few frames after, the ratio was fine but the object was already tracked in the yellow zone.