Translator Disclaimer
28 May 1993 Determining the optimum image recording conditions in shearography based on spatial frequency considerations
Author Affiliations +
Proceedings Volume 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing; (1993) https://doi.org/10.1117/12.145543
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States
Abstract
The transmission function of a double-exposure shearing specklegram consists of fringe- bearing and non-fringe bearing components. To obtain interference fringes, spatial filtering is performed on the processed specklegram to allow only the fringe-bearing components to pass. The spatial frequency for filtering is often determined on a trial-and-error basis. In this paper, a technique is presented to obtain a spectral distribution from which the optimum spatial filtering frequency can be deduced. Knowledge of the optimum spatial filtering frequency to recording aperture relationship enables better selection of image recording conditions.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fook Siong Chau and Tuck Wah Ng "Determining the optimum image recording conditions in shearography based on spatial frequency considerations", Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); https://doi.org/10.1117/12.145543
PROCEEDINGS
12 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Moire Strain Contours Of Crack-Tip Deformation
Proceedings of SPIE (February 17 1987)
Coded Apertures Derived From The Fresnel Zone Plate
Proceedings of SPIE (March 01 1974)
Optical Processing Of Photographic Images
Proceedings of SPIE (December 07 1981)
Development of sunlight speckle photography
Proceedings of SPIE (March 20 1997)

Back to Top