Patent ID: 8786767

Claim:
A method comprising: rapidly flashing at a flash rate at least twice as fast as an image capture rate of a first image sensor, or a second image sensor an object with a first light source, the object illuminated by a second light source in addition to the first light source; synchronizing shuttering of image sensors to the rapid flashing, the synchronized shuttering exposing the first image sensor during the flashes and the second image sensor not during the flashes; capturing, at the first image sensor, a first image of the object, the first image integrating multiple exposures during which the object is illuminated by the first light source during multiple, respective flashes and during which the object is also illuminated by the second light source; capturing, at the second image sensor, a second image of the object, the second image integrating multiple exposures during which the object is not illuminated by the first light source but is illuminated by the second light source; and comparing the first image and the second image effective to create a net image, the net image showing the object illuminated by the first light source but not illuminated by the second light source.