Improved visual detection of flaws by using temporal phase modulation in digital speckle shearing interferometry

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Abstract

The visual detection of flaws by digital speckle shearing interferometry is hampered by a spatial texture form cue deteriorated by speckles. The incorporation of time-varying phase modulations, proposed in this letter, adds a temporal component which helps to improve the differentiation of the flaw-developed fringe pattern from its background.

Original languageEnglish
Article number003
Pages (from-to)715-717
Number of pages3
JournalPure and Applied Optics
Volume3
Issue number5
DOIs
Publication statusPublished - 1 Jan 1994
Externally publishedYes

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