If i have learned anything about UX, it's that 1) people don't read, 2) people also don't read, and 3) if you have something important to tell them, don't make them read.

What that leaves you as options is pretty limited.

Depends on the situation though. If you've taken an image of something you want to identify, people are going to read it when you give them text to read. If that text as any longer than just the name of the thing you IDd then they'll probably stop reading.