False detection

[borsecurity]

Hi,
I made many requests and I saw that in so many photos that the system detected people, in reality people were not there.
I used the demo system.
Is it possible that this affects the performance of the detection?
Because on a sample of 1000 photos 15% of the detections are wrong.

I still have many more photos like this

[borsecurity]

Images:

https://drive.google.com/file/d/1XSGmOt ... sp=sharing