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Title: Depth-resolved imaging and displacement measurement techniques viewed as linear filtering operations
Authors: Ruiz, Pablo D.
Huntley, Jonathan M.
Coupland, Jeremy M.
Keywords: Phase imaging
Speckle interferometry
Optical coherence tomography
Wavelength scanning
Frequency scanning
Tilt scanning
Displacement measurement
Linear filtering
Issue Date: 2011
Publisher: Springer / © Society for Experimental Mechanics
Citation: RUIZ, P.D., HUNTLEY, J.M. and COUPLAND, J.M., 2011. Depth-resolved imaging and displacement measurement techniques viewed as linear filtering operations. Experimental Mechanics, 51 (4), pp. 453 - 465.
Abstract: The last 5 years have seen the emergence of a family of optical interferometric techniques that provide deformation measurements throughout three-dimensional (3-D) weakly scattering materials. They include wavelength scanning interferometry (WSI), tilt scanning interferometry (TSI), phase contrast spectral optical coherence tomography (PC SOCT) and hyperspectral interferometry (HSI) and can be thought of as a marriage between the phase sensing capabilities of Phase Shifting Interferometry and the depth-sensing capabilities of Optical Coherence Tomography. It was recently shown that some closely related 3-D optical imaging techniques can be treated as shift-invariant linear filtering operations. In this paper, we extend that work to include WSI, TSI, PC SOCT and HSI as spatial filtering operations and also relate the properties of their transfer functions in the spatial frequency domain to their spatial resolution and phase sensitivity, for depth-resolved displacement measurements.
Description: This article was published in the journal, Experimental Mechanics [Springer / © Society for Experimental Mechanics]. The final publication is available at link.springer.com and the definitive version is available at: http://dx.doi.org/10.1007/s11340-010-9393-8
Version: Accepted for publication
DOI: 10.1007/s11340-010-9393-8
URI: https://dspace.lboro.ac.uk/2134/13318
Publisher Link: http://dx.doi.org/10.1007/s11340-010-9393-8
ISSN: 0014-4851
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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