Minimal size of detected object per settings?

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validation

Hi there!
Is there a way to set the minimal size of an object to be recognized as person for example?
In comparison to deepstack which I used before I get quite some false positives from shadows depending on sun and time of day. Those could be removed if it would be possible to adjust the minimal object size...

I've added an example image: Imgur: example image[^]

Thanks in advance!

What I have tried:

hope for the best.............