How does Metashape search for tie points?

[salarconrobledo]

Hi all,

Would anyone be able to explain to me the criteria used by Metahsape when analyzing key points in search of tie points? I remember having read that it searches for patterns of variation of brightness among groups of a certain amount of pixels. I would very much appreciate if anyone could coorect or confirm this. Thank you!

[tazzo]

Would be useful to understand how to post-process images for best results. At least some guidelines.