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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.

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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

Consult in UCrea Read publication

Authorship

JOSE ALBERTO GUTIERREZ GUTIERREZ

VERONICA MIEITES ALONSO

ARTURO PARDO FRANCO

JOSE MIGUEL LOPEZ HIGUERA

OLGA MARIA CONDE PORTILLA

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