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Optical Engineering

Three-dimensional shape analysis by use of a projected grating image
Author(s): Miwa Suganuma; Toru Yoshizawa
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Paper Abstract

A grating pattern projected onto an object deforms in accordance with the three-dimensional shape of the surface. This deformed image can be analyzed by detecting the shifted phase of the original grating pattern with the aid of Fourier transformation. The profile of the object is expressed in moiré contours as well as in a wire-frame model for the intuitive understanding of the shape. In this procedure, multiplication and visibility enhancement of moiré fringes are performed with an improved result.

Paper Details

Date Published: 1 October 1991
PDF: 5 pages
Opt. Eng. 30(10) doi: 10.1117/12.55963
Published in: Optical Engineering Volume 30, Issue 10
Show Author Affiliations
Miwa Suganuma, Tokyo University of Agriculture and Technology (Japan)
Toru Yoshizawa, Tokyo Univ. of Agriculture and Technology (Japan)


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