Wednesday, June 3, 2009

Polarikey

So chromakey(bluescreen/greenscreen) is nice and all, but has anyone considered using polarized light for the purpose?

Consider what one could do if rather than using a green wall and matched against green, one used a multicolor display emitting polarized light. The camera would use a filter polarized at 90 degrees from the display, and the postprocessing would simply overlay the camera image on top of the display image.

This would have the benefit of allowing the presenter to see what he was pointing at (or even read cues from the display surface), while at the same time allowing the data displayed to not lose image quality from being processed by the camera.

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