Patent ID: 9282304
Filing Date: 2016-03-08
CPC Classification: G01B,G02B,H04N

Claim Text:
1. An interferometric method for producing a color image of a sample surface from white-light interference irradiance measurements, the method comprising the following steps: acquiring irradiance data produced by multiple wavelengths at each pixel of a color detector receiving said interference irradiance; processing said irradiance data for each of said wavelengths to remove an interference component of the irradiance data and produce a DC component thereof; estimating a reference-surface contribution to said DC component of the irradiance data; subtracting said reference-surface contribution from the DC component of the irradiance data to produce a sample-surface component thereof; and combining said sample-surface component for each of said wavelengths received at pixels of the color detector corresponding to a predetermined area of the sample surface to produce a color image thereof; wherein said acquiring, processing, estimating, subtracting, and combining steps are carried out with a computer processor.