Patent ID: 7903256
Filing Date: 2011-03-08
Classification: A61B,G01B

Abstract:
1. A method for performing real-time quadrature projection processing to produce a full-range image of an object, the method comprising: (a) applying a Fourier transform to each individual interferogram signal of a plurality of interferogram signals, generated by projecting light from a light source onto an object of interest and detecting light reflected from the object and from at least one reference source; (b) calculating a real quadrature component and an imaginary quadrature component for each of the plurality of transformed interferogram signals; (c) combining the real quadrature components of the transformed interferogram signals to generate a derived real component and combining the imaginary quadrature components of the transformed interferogram signals to generate a derived imaginary component; (d) constructing a full-range depth profile of the object by combining the derived real component and the derived imaginary component; and (e) generating a full-range depth image of the object using the full-range depth profile.