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Proceedings Paper

Real-Time Fringe Processing by Hybrid Analog-Digital System
Author(s): S. Toyooka; K. Ohashi; K. Yamada; K. Kobayashi
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Paper Abstract

Two-dimensional fringe pattern such as interference fringes or incoherent grating-like pattern are widely used to measure surface configuration, roughness, and deformation. Recently several methods of automatic fringe processing have been developed. These methods are on the basis of Fourier analysis and then have high precision. They can be classified into two typed in which a desired phase modulation is treated (1) on temporally varying carrier such as fringe scanning method (2) on spatially varying carrier such as Fourier transform method":). In the later, whole field of phase distribution can be determined by analyzing only one fringe pattern, and then real-time processing is possible In our present paper, we propose real-time fringe processing system by using an analog-digital hybrid system.

Paper Details

Date Published: 1 January 1987
PDF: 2 pages
Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); doi: 10.1117/12.967140
Show Author Affiliations
S. Toyooka, Saitama University (Japan)
K. Ohashi, Saitama University (Japan)
K. Yamada, Saitama University (Japan)
K. Kobayashi, Saitama University (Japan)


Published in SPIE Proceedings Vol. 0813:
Optics and the Information Age

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