You don't need to be lucid to notice dream activation. Cues in your dream are reading a book, attending classes where the subject is being discuss. Parts of the stories being played out in your dream.
I've woken up with a clear understanding of what the book was about.
For many lucid dreams are hard to achieve. So when it comes to PhotoReading and activating in a lucid dream sure it would probably work but my bet is you'd get bored of it and lose lucity quickly. It's much more fun being a hero in your own action adventure than being the bookworm. 
Try it an see. Share your experience.
Alex
