Abstract
A novel method for noncontact visual measurement of the profile of surfaces is described. Sinusoidal color fringe patterns are projected onto the surface to be measured, which is then viewed with a color camera. From examination of the red, green, and blue components of a single color image the depth at each point on the surface is determined from the calculation of relative phase shifts.
A description of the system is given together with experimental results. The system has been tested for several objects with neutral colored surfaces, including the measurement of three-dimensional profiles of turbine blades.
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Wust, C., Capson, D.W. Surface profile measurement using color fringe projection. Machine Vis. Apps. 4, 193–203 (1991). https://doi.org/10.1007/BF01230201
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DOI: https://doi.org/10.1007/BF01230201