A New Set of Signal-Processing Algorithms in Laser Speckle Metrology

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Abstract

Non-contacting methods for strain and displacement measurement are now well established, although not in very wide spread use in material science applications. Besides other methods laser speckle pattern shift techniques can be successfully used for strain and displacement measurements. Using such a technique one is confronted with the problem of calculating speckle pattern shift values from a time series of images. In this paper we present a new set of algorithms based on minimum-mean-square error and maximum likelihood principles suitable to do this task. We show their application in two different strain and displacement measurement set-ups.
Original languageEnglish
Title of host publicationProceedings of the 21st IEEE Instrumentation and Measurement Technology Conference, IMTC/04
EditorsS. Demidenko, R. Ottoboni, D. Petri, V. Piuri, D.C.T. Weng
Pages1338-1343
Number of pages6
DOIs
Publication statusPublished - May 2004

Publication series

NameConference Record - IEEE Instrumentation and Measurement Technology Conference
Volume2
ISSN (Print)1091-5281

Fields of science

  • 202036 Sensor systems

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