High speed three dimensional imaging method

Details High speed three dimensional imaging method High speed three dimensional imaging method

1999-08-12

2000-11-14

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

356 301, 356375, G01B 1124

Patent

active

061477605

ABSTRACT:
A three-dimensional (3D) surface profile measurement method and apparatus uses projected energy with a known spatially varying wavelength distribution over the surface of objects in a scene. The varying wavelength of the light corresponds to the angle at which the light is emitted from a light source. Given this correspondence, light reflected from the scene can be identified by wavelength as to angle at which it was emitted. Triangulation can then be used to determine the distance to the point in the scene from which the detected light is reflected. When performed over a number of points on the scene, a three-dimensional profile of the scene can be generated.

REFERENCES:
patent: 4864395 (1989-09-01), Tajima
patent: 5157487 (1992-10-01), Tajima
Tajima, Johji "Rainbow Range Finder Principle for Range Data Acquisition" C&C Information Technology Research Laboratories, NEC Corporation 4-4-1, Miyazaki, Miyamai-ku, Kawasaki 213, Japan, 1987 IEEE.

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