Please have a look at this article : How it Works: Augmented Reality
Remember the winking, nodding magical collectible cards of famous witches and wizards from Harry Potter? French company Total Immersion has something similar for Muggles: The company helped create baseball cards where 3-D avatars of players emerged on the desktop to pitch and bat with real-world users, and is also now working with Mattel to create a new line of action figures based on the upcoming sci-fi-flick Avatar.
Digital magic known as augmented reality made it possible. “Augmented reality is a composite experience–a video stream merged with a synthetic component and manipulated in real time,” says Greg Davis, general manager at Total Immersion. “We are taking video and superimposing a digital layer over it.” more
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