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

José A. Gutiérrez-Gutiérrez; Verónica Mieites; Arturo Pardo; José M. López-Higuera; Olga M. Conde

doi:10.1117/12.2670564

11 August 2023 Comparison between optical coherence tomography and phase shifting profilometry for surface estimation

José A. Gutiérrez-Gutiérrez, Verónica Mieites, Arturo Pardo, José M. López-Higuera, Olga M. Conde

Proceedings Volume 12627, Translational Biophotonics: Diagnostics and Therapeutics III; 126271P (2023) https://doi.org/10.1117/12.2670564
Event: European Conferences on Biomedical Optics, 2023, Munich, Germany

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.

Citation Download Citation

José A. Gutiérrez-Gutiérrez, Verónica Mieites, Arturo Pardo, José M. López-Higuera, and Olga M. Conde "Comparison between optical coherence tomography and phase shifting profilometry for surface estimation", Proc. SPIE 12627, Translational Biophotonics: Diagnostics and Therapeutics III, 126271P (11 August 2023); https://doi.org/10.1117/12.2670564

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