This 3D-tracking-prototype was part of my Master Thesis in Interaction Design. I was designing for the Radiologists Reading Room.
I am tracking the position and orientation of a pen in free 3D space. So you can use the pen to mark and view a 3 dimensional CT-scan.
here is a video of the prototype
more information can be found here, you can also download the patch from there and the 3D files.
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