drkohler said:
Hmm you got me there. I have to think a while to figure out if that is actually possible at all, considering the reflectivity of a volume element changes with angle of illumination. Just think of a mirror cube that rotates at a fixed axis in front of the camera. The reflected ir light would vary from 0% to 100% with the cube constantly at the same distance. That would refute your idea.. |
Well, it wasn't my idea, I read it here, so I figured they would be right...
"A player standing anywhere between 0.8 and 4 metres from Natal is illuminated with infrared light. A monochrome video camera records how much of that light they reflect, using the brightness of the signal to approximate their distance from the device and capture their movements in 3D."
