Boy these Kinect hacks just keep coming at us reminding us of the things that a brain can do. A British artist and designer by the name Chris O’Shea has managed to play a guitar using Kinect’s camera to good effect and is calling his project Air Guitar prototype. Demo video after the jump.

Kinect Guitar

O’Shea’s primary intent behind this splendid effort was to explore what the potential of interactive music games could be in the future & also just to experiment with the Kinect. Seeing this video, I won’t be surprised if the big names in the gaming industry start working on the idea.

Chris who has an eye for creating digital toys used C++ to make the magic happen. Here’s how the hack works:

First it thresholds the scene to find a person, then uses a histogram to get the most likely depth of a person in the scene. Then any pixels closer than the person to the camera are possible hands. It also uses contour extremity finding on the person blob to look for hands in situations where your hand is at the same depth as your body. It only works if you are facing the camera front on. Then it uses one hand as the neck of the guitar, drawing a virtual line from the neck through the person centroid to create the guitar line. The other hand is tracked to see if it passes through this line, strumming the guitar. The neck hand position controls the chord.

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[via Kinect Hacks]