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Fourier profilometry information


Fourier profilometry is a method for measuring profiles using distortions in periodic patterns. The method uses Fourier analysis (a 2-dimensional fast Fourier transform) to determine localized slopes on a curving surface.

This allows a x, y, z coordinate system of the surface to be generated from a single image which has been overlaid with the distortion pattern.

It is used specifically in measuring the shape of the human cornea for use in contact lens design.

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Fourier profilometry

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Fourier profilometry is a method for measuring profiles using distortions in periodic patterns. The method uses Fourier analysis (a 2-dimensional fast...

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Profilometer

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microscopy; pattern projection methods such as fringe projection, Fourier profilometry, Moire, and pattern reflection methods. Contact and pseudo-contact...

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surface metrology in hard-to-reach spaces and in hostile environments, profilometry of surfaces with high aspect ratio features (grooves, channels, holes)...

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See dOCTor-8 Dufour, Marc L.; Gauthier, Bruno (2003). "Precise surface profilometry based on low-coherence interferometry". In Lessard, Roger A; Lampropoulos...

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surface metrology in hard-to-reach spaces and in hostile environments, profilometry of surfaces with high aspect ratio features (grooves, channels, holes)...

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