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High activity sensitivity

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6 comments

  • Logi_Aron

    In our system, people being detected does not imply high activity (blue). The threshold for high activity is not configurable as its dynamically driven by our computer vision algorithms. If you want to limit notifications, you could setup zones to exclude certain areas of the video.

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  • Matt9265
    Ok, the problem is I have grey activities marked with a person that contain a car driving across the frame and someone walking to the door which is just off the centre of the field of view. I'd hope this would be marked as high activity as someone going to a door is something a security camera should be highlighting. As I understand it the person highlighting is just in the premium option (I'm on the free trail at the moment) so when that expires I'm going to miss people trying to get through a door which is disappointing.
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  • Matt9265

    Hi,

     

    Is there any response to this? I've repositioned the camera so it has the door centre frame and car to the right, someone walking out of the door and driving the car away isn't logged as high activity, in my view you couldn't get much higher an activity?!

     

    It was logged with a person indicator, but I'm going to loose this unless I pay £80 a year.

     

    Interested in your response, are these camera always learning and improving or is the "intelligence" set?

     

    Thanks

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  • datasound

    Hi Matt, I have been baffled by this as well for a few months now. Logitech folks please correct me if this is wrong, but here is what I have figured out.

     

    Person alerts means that if a person is seen ANYWHERE in the camera's field of view then a 'person' icon will appear in the circles. Person detection has nothing to do with any zones or activity levels you have selected. (Note: Person detection for me fails a lot especially at night).

     

    Next, if you define zones and set those to alert. They will alert if they see any motion at all. The amount of motion determines whether the circle is gray or blue. And I agree with you that I get motion alerts with cars going by that I would think would be blue and they are in fact gray. Maybe Logitech can clarify: is Activity level based on "speed of motion" or is it based on "duration of motion" or is it "Size of object"? For example would a slow walking cat make a grey circle and a fast running cat make a blue circle?

     

    For me the biggest issue that needs addressing is I don't want to get a person alert if they are not in my defined zones. IE: Person walking in the street I don't care about. Person walking up to my front door I do care about.

     

    I hope this helps.

     

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  • Logi_Aron

    I'll do my best to answer the various questions:

     

    1. Person alerts (or the person tag) are only searched for in areas of the video that contain motion. This is so that if you have a painting or a photograph of a person, it won't constantly trigger it. However, motion in front of photograph may cause alerts if the foreground / background extraction doesn't work for your scene.
    2. You can configure your alerts to only be sent if a person AND a zone is triggered. But you are right, the person detection is run on all the areas that had motion, not just your one zone used for notifications. We do this because zones, and person tags are retroactive search criteria not just exclusions for notifications.
    3. Blue/Grey - There are three major scores that go into making a bubble blue. The first is the relative size of moving objects. The larger the objects are respective to the field of view, the higher the score. The second is the location of the movement. The more to the center, the higher the score. The third then takes the two previous and weights them based on how long each occurs relative to the length of the video. If you have a Circle 2, you can try adjusting the Field of View settings as well.

     

    If you want, please send an email to innercircle@logitech.com and either attach some recordings, or include links to Google Drive or someplace else where you can upload the recordings too. Just reference this forum post / "Aron" and we will look at them further.

     

    Best regards,

    Logi_Aron

    Head of Engineering, Logitech Circle

     

    ?If this reply adequately addresses your issue, please mark it as ?Select as Best? and click ?Like?, so this information can benefit other community members.

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  • Matt9265

    Thank you for the explanation, it looks like the video I mentioned above has now been deleted, but I'll keep an eye out of other examples.

     

    Thanks

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