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Optical Engineering

Strain contouring using gabor filters: principle and algorithm
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Paper Abstract

Moire interferometry is a powerful technique for high sensitivity in-plane deformation contouring. However, from an engineering viewpoint, the derivatives of displacement, i.e., strain, are the desired parameter. Thus there is a need to differentiate the displacement field. Optical and digital methods have been proposed for this differentiation. Optical methods provide contours that still need to be quantified, while digital methods suffer from drawbacks inherent in the digital differentiation process. We describe a novel approach of strain segmentation for the moire pattern using a multichannel Gabor filter. Appropriate filter design allows for user-specific segmentation, which is essentially in engineering design and analysis.

Paper Details

Date Published: 1 June 2002
PDF: 6 pages
Opt. Eng. 41(6) doi: 10.1117/1.1477440
Published in: Optical Engineering Volume 41, Issue 6
Show Author Affiliations
Anand Krishna Asundi, Nanyang Technological Univ. (Singapore)
Jun Wang, Nanyang Technological Univ. (Singapore)


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