Perhaps instead of having the camera and a lazer pointer you could have something that monitors the movement of ones eyes - as in like a pair of spectacles that watch you eye movements and then recreate images(on a pc) based on those movements.

Not sure how the color can be done, perhaps in a similar way to how those finger clamp, mental pc control pickups work.

I saw a documentary once where a similar technology was applied to get an idea how the human brain automatically scans its environment for threats/treats.