This is what we face blind lack. People who don't have face blindness can remember faces readily, and they can identify a face so remembered in less than a second. Evaluation of potential sexual partners. There is certain neurological circuitry that gets activated when a potential sexual partner is seen. Most people are not attracted to every specimen of a sex group, but rather to a subset of it.
Age is the most common criteria imposed, but people generally have others, too.
There are other ways to recognize images too. They are not designed to operate just on human forms, so they may not work as well as the above. If I have seen the street only a few times, though, I cannot tell you where I am. I can't always do it in under a second, though. It may take several.