Patent ID: 7898651

Claim:
A method for inspecting an object, said method comprising: coupling a computer to at least one of a liquid crystal display (LCD) device, a liquid crystal on silicon (LCOS) device, and at least one imaging sensor; emitting light from at least one of the liquid crystal display (LCD) device and the liquid crystal on silicon (LCOS) device in a sinusoidal fringe pattern; controlling the fringe pattern using a computer; phase-shifting the light emitted from at least one of the LCD device and the LCOS device; projecting the phase-shifted sinusoidal fringe pattern of light onto a surface of the object that reflects light; receiving light reflected from the surface of the object with the imaging sensor; determining a phase map of the object; and analyzing the light received by the imaging sensor by identifying multiple bounce reflections based on light received by the imaging sensor to facilitate substantially reducing image noise in the light received from the surface of the object to further facilitate inspecting at least a portion of the object.