Automated analysis in digital speckle shearing interferometry using an object step-loading method

T. W. Ng, F. S. Chau

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

Automated analysis in digital speckle shearing interferometry using the conventional two-frame differencing method is hindered by phase unwrapping errors and unresolved fringe patterns due to excessive object load. An object step-loading method with the ability to surmount these limitations is proposed and demonstrated. An added advantage of the proposed method is its ability to yield the entire slope versus load history within one loading cycle.

Original languageEnglish
Pages (from-to)214-218
Number of pages5
JournalOptics Communications
Volume108
Issue number4-6
DOIs
Publication statusPublished - 1 Jun 1994
Externally publishedYes

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