Young's Fringe Analysis Using Computer Image-Processing System
| Autor: | Yoshiaki Sawa, Fu-Pen Chiang, Masanori Kikuchi, Kenji Machida |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Diffraction
Pixel Computer science business.industry Orientation (computer vision) Mechanical Engineering Fast Fourier transform Astrophysics::Instrumentation and Methods for Astrophysics Deformation (meteorology) Speckle pattern symbols.namesake Fourier transform Optics Mechanics of Materials symbols General Materials Science Halo business |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A. 60:1294-1299 |
| ISSN: | 1884-8338 0387-5008 |
| DOI: | 10.1299/kikaia.60.1294 |
| Popis: | Two-dimensional Fourier transform analysis is presented as an advanced method for numerically processing the Young's fringes diffraction pattern from a double-exposure speckle photograph. The fringe spacing and orientation are determined using only one Young's fringes pattern without any other diffraction halo patterns. This algorithm is based on the 2-D FFT of the fringe pattern with 256×256 pixels. Therefore, it has enabled automatic analysis to be performed with noisy and poor fringe patterns. The measurement of deformation field by the laser speckle method can be carried out with higher accuracy, reliability and speed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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