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Comparison between optical coherence tomography and phase shifting profilometry for surface estimation

Abstract: Profilometry is the technique that estimates the surface height and tomography of a sample. This technique is crucial to correct the intensity variations and angle changes when optical properties of a sample are estimated and its calculation depends on the surface profile. Two systems have been evaluated in this work: an Optical Coherence Tomography (OCT) system and a Spatial-Frecuency Domain Imaging (Hyperspectral-SFDI) system made up of a rotating mirror hyperspectral camera and a Red-Green-Blue (RGB) projector. The estimation of the height map with the OCT system based on the high contrasted backscattering of the air-sample interface whereas, while with the HSI-SFDI system the Phase Shifting Profilometry (PSP) technique has been implemented employing different frequencies. This work compares both approaches and evaluates the differences between them.

Other conference communications or articles related to authors from the University of Cantabria

 Authorship: Gutíerrez-Gutíerrez J.A., Mieites V., Pardo A., Lopez-Higuera J.M., Conde O.M.,

 Congress: Translational Biophotonics: Diagnostics and Therapeutics (3ª : 2023 : Múnich)

 Publisher: SPIE Society of Photo-Optical Instrumentation Engineers

 Publication date: 11/08/2023

 No. of pages: 4

 Publication type: Conference object

 DOI: 10.1117/12.2670564

 ISSN: 0277-786X,1996-756X

 Spanish project: PID2019-107270RB-C21

 Publication Url: https://doi.org/10.1117/12.2670564

Authorship

VERONICA MIEITES ALONSO

ARTURO PARDO FRANCO