Data compression for speckle correlation interferometry temporal fringe pattern analysis
Temporal fringe pattern analysis is gaining prominence in speckle correlation interferometry, in particular for transient phenomena studies. This form of analysis, nevertheless, necessitates large data storage. Current compression schemes do not facilitate efficient data retrieval and may even result in important data loss. We describe a novel compression scheme that does not result in crucial data loss and allows for the efficient retrieval of data for temporal fringe analysis. In sample tests with digital speckle interferometry on fringe patterns of a plate and of a cantilever beam subjected to temporal phase and load evolution, respectively, we achieved a compression ratio of 1.6 without filtering out any data from discontinuous and low fringe modulation spatial points. By eliminating 38% of the data from discontinuous and low fringe modulation spatial points, we attained a significant compression ratio of 2.4.
- OSTI ID:
- 20702435
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 14 Vol. 44; ISSN 0003-6935; ISSN APOPAI
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fourier-transform method of data compression and temporal fringe pattern analysis
A SIMPLE HETERODYNE TEMPORAL SPECKLE-PATTERN INTERFEROMETER
Phase measurement in temporal speckle pattern interferometry signals presenting low-modulated regions by means of the bidimensional empirical mode decomposition
Journal Article
·
Sat Nov 19 23:00:00 EST 2005
· Applied Optics
·
OSTI ID:20702665
A SIMPLE HETERODYNE TEMPORAL SPECKLE-PATTERN INTERFEROMETER
Journal Article
·
Fri May 28 00:00:00 EDT 2010
· AIP Conference Proceedings
·
OSTI ID:21366757
Phase measurement in temporal speckle pattern interferometry signals presenting low-modulated regions by means of the bidimensional empirical mode decomposition
Journal Article
·
Wed Feb 09 23:00:00 EST 2011
· Applied Optics
·
OSTI ID:22036579