I have found this video, which I must say is very impressive!
"3D Mapping Video projected creates a single event using the innovativing system that consists in applying video onto a
monumental architecture or object playing with its forms and its volumes.”
I suspect it's a AAE thing. I would be very much appreciated if someone briefly describe this technique or make some video tutorials:
PULL BRICKS OUT OF THE WALL - 4:00
ROBOT WALKING BEHIND THE PILLARS - 1:30
WAVEING FACADE - 5:46
If you want to create this kind of effect on a shot of a building in AE you can use the techniques I describe in this tutorial that I did for Creative Cow a long time ago. It involves a little creativity, using lights and solids as projectors instead of shadow casters. There's a little movie here that shows kind of what's going on. The still at the right is from the tutorial.
If on the other hand you want to create images that you project on a building all you have to do is create the images and get a projector. If you want to match the perspective with your projection then you go to the exact location where you would set up the projector and photograph the building from the same angle. Then you load the photo into AE and build your graphic so that it works with the building. Then you remove the photo of the building and render the video, set up the projector and have fun.
I actually did some projects about a zillion years ago that were projected on the food Seattle Opera House at the Seattle Center. I didn't use AE though, I used a Nikon F2, Kodachrome, and a pair of Eckotragraphic Projectors with a dissolve unit . I projected a shot of the front of the building on a white show card, traced the outline of the building, then setup my artwork on a easel and photographed it. Same idea, different tools.