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Fourier-transform speckle profilometry: three-dimensional shape measurements of diffuse objects with large height steps and/or spatially isolated surfaces
- Source :
- Applied Optics. Dec 1, 1994, Vol. 33 Issue 34, p7829, 10 p.
- Publication Year :
- 1994
-
Abstract
- An interferometric technique for automated profilometry of diffuse objects has been proposed. It is based on the Fourier-fringe analysis of spatiotemporal specklegrams produced by a wavelength-shift interferometer with a laser diode as a frequency-tunable light source. Unlike conventional moire techniques the proposed technique permits the objects to have discontinuous height steps and/or surfaces spatially isolated from one another. Experimental results are presented that demonstrate the validity of the principle. Key words: Profilometry, interferometry, speckle, Fourier transform.
Details
- ISSN :
- 1559128X
- Volume :
- 33
- Issue :
- 34
- Database :
- Gale General OneFile
- Journal :
- Applied Optics
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.16576009