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People Detection False Positives

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lightvox
 
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Joined: Fri Jul 22, 2016 2:56 am

People Detection False Positives

by lightvox » Fri Jul 22, 2016 1:19 pm

I just purchased the basic license last night and then set up a number of rules. Today, I'm noticing a ridiculous amount of false positives for a rule that is supposed to send an alert via email if it sees a person within a region (zone) that I set.

I'm getting false positives from the sun coming in and out of the clouds. I was getting this with the default motion detection software that came with the camera. I was not expecting such poor performance from this software. When reviewing the video it shows a yellow box around the entire viewing area of the camera that moves and shrinks with the light and shadows. I don't understand how Sighthound Video doesn't already filter out for situations where what is detected encompasses the ENTIRE screen. A person that size would have to be 50 feet wide! I know there are settings to filter for smaller objects like pets, but Sighthound should be filtering out 50 ft wide "people" as well. Hopefully this gets fixed in subsequent releases. I'm very surprised this is not something that is already built in.

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whmoorejr
 
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Joined: Mon Aug 22, 2016 11:07 am

Re: People Detection False Positives

by whmoorejr » Fri Aug 26, 2016 5:04 pm

I have the same issue in addition to people being classified as "unknown objects". This is from a camera that is looking directly up a walkway with all the time in the world to figure out what kind of object is approaching.

I don't get a lot of false detections.... I get the sun / cloud thing like you described about once per day on about half the cameras.

Sighthound has also done well with filtering out rain and most bugs. I still get the occasional bug flying into a camera that sighthound thinks is a person.... but it's not nearly as bas as when I was only using camera pixel motion detection. (built in camera detection or build in NVR detection).

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Devin
 
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Re: People Detection False Positives

by Devin » Wed Aug 31, 2016 3:07 pm

Hello whmoorejr and lightvox,

The accuracy of detections can vary depending on the conditions of a scene and it's stream. If you could send an example video and/or image of these false detections to [email protected] I'd be happy to provide feedback. In the meantime you may find some of the information in these articles useful:

Tips for getting best recognition: https://www.sighthound.com/support/tips ... ecognition
It's hard to find what I want because there are too many clips: https://www.sighthound.com/support/its- ... many-clips

Regards,

-Devin


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