A method for inspecting an object includes emitting light from a light source, projecting the light emitted from the light source onto a surface of the object, splitting light reflected from the object surface into a first image and a second image, receiving the first image and the second image with an imaging sensor, and analyzing the first and second images received by the imaging sensor to facilitate inspecting at least a portion of the object.
https://app.acclaimip.com/pdf/Zu3J-y7Nyt127cmey83K0R09UerZSkNK-h5WSWc/US7576347B2
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