Young's fringes analysis with a computer image-processing system
| Autor: | Fu-Pen Chiang, Yoshiaki Sawa, Kenji Machida, Masanori Kikuchi |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Diffraction
Physics Pixel Orientation (computer vision) business.industry Mechanical Engineering Fast Fourier transform Astrophysics::Instrumentation and Methods for Astrophysics Image processing Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Speckle pattern symbols.namesake Interferometry Fourier transform Optics symbols Computer vision Artificial intelligence Electrical and Electronic Engineering business |
| Zdroj: | Optics and Lasers in Engineering. 21:151-164 |
| ISSN: | 0143-8166 |
| DOI: | 10.1016/0143-8166(94)90068-x |
| Popis: | A two-dimensional Fourier transform analysis is presented 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 enables automatic analysis to be performed on specklegram with noisy and poor fringe patterns. The measurement of deformation by the laser speckle method can be carried out with high accuracy, reliability and speed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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