Patent ID: 8310560

Claim:
A device comprising: a camera including a lens and one or more sensors capable of capturing a two-dimensional color image of a field of view including an intensity at a first wavelength and an intensity at a second wavelength for each of a plurality of pixel locations in a two-dimensional array, each one of the plurality of pixel locations corresponding to a direction from the lens into the field of view; and a processor programmed to calculate a thickness through a medium to a luminescent layer, the medium being a non-fluorescent medium, in the direction corresponding to each one of the plurality of pixel locations as a function of a ratio of the intensity of the first wavelength to the intensity of the second wavelength at that one of the plurality of pixel locations, thereby providing a plurality of thickness measurements, the processor further programmed to calculate a three-dimensional image of an object within the field of view based upon the plurality of thickness measurements.