Three dimensional color imaging

Optics: measuring and testing – For optical fiber or waveguide inspection

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356326, 356376, G01B 1124, G01J 350

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active

051775565

ABSTRACT:
Three dimensional digital imaging of the profile of a surface of an object is improved to include the collection of data on the color of the surface, this result being achieved with only minor changes to a monochromatic 3-D camera and without the complications of multiple detectors or multiple color filters. The surface is scanned with an incident beam of light that contains a plurality of wavelengths including at least one well defined wavelength, e.g. either three well defined wavelengths corresponding respectively to the primary colors, or a continuum of visible light plus one well defined wavelength outside such continuum. The return beam that is analyzed to generate the digital profile data is dispersed into a plurality of separate return beams according to wavelength, the relative intensities of such separate return beams providing the color data.

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patent: 4645347 (1987-02-01), Rioux
patent: 4701049 (1987-10-01), Beckmann et al.
P. J. Besl "Active, Optical Range Imaging Sensors" published in Machine Vision and Applications (1988) 1:127-152.

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