Patent ID: 6999178

Claim:
A method, comprising: digitally recording a first spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis using a first reference beam and a first object beam; digitally recording a second spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis using a second reference beam and a second object beam; Fourier analyzing the digitally recorded first spatially-heterodyned hologram, by shifting a first original origin of the digitally recorded first spatially-heterodyned hologram to sit on top of a first spatial-heterodyne carrier frequency defined by a first angle between the first reference beam and the first object beam, to define a first analyzed image; Fourier analyzing the digitally recorded second spatially-heterodyned hologram, by shifting a second original origin of the digitally recorded second spatially-heterodyned hologram to sit on top of a second spatial-heterodyne carrier frequency defined by a second angle between the second reference beam and the second object beam, to define a second analyzed image; digitally filtering the first analyzed image to cut off signals around the first original origin to define a first result; and digitally filtering the second analyzed image to cut off signals around the second original origin to define a second result; performing a first inverse Fourier transform on the first result, and performing a second inverse Fourier transform on the second result, wherein the first object beam is transmitted through an object that is at least partially translucent and the second object beam is reflected from the object.