Question: How to compute the overlap of an image pair?

[codeaddict00]

Hi! Congratz on the great work!

In the paper, it says: "we pass all pairs through network F and measure their overlap based on the average confidence in both pairs, then we filter out low-confidence pairs."

I would like to know how to compute the average confidence of a pair?
and what threshold do you use to filter out the low-confidence ones?

Thanks!