How to Perform Easy Camera Mapping VFX with Adobe After Effects

First of all, what is Camera mapping? From Wikipedia:

Camera mapping is a clever technique that allows you to take a still image and convert it into 3d geometry for use in an animation. This powerful technique is used extensively by visual effects studios for feature films, commercials and television shows.

wrenthereaper

shows us how to perform easy camera mapping visual effects with Adobe After Effects:

You can download his project video file (MOV) here.