Adjacent to what the OP is looking for, there is the concept of the “search image” (which is very difficult to google before because you’ll get lots of links about image searches.) In various fields such as paleontology, anthropology, archaeology, meteorite hunting, and other fields that involve lots of time walking around staring at the ground looking for small bits of specific things surrounded by mountains of small bits of nonspecific things, you gradually learn how to recognize things that 99.99% of other people would walk over without noticing.
Here are a few search results with more terms added to ensure positive hits.