MID-INFRARED (MIR) OCT-based inspection in industry

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Natalia P. García-de-la-Puente, Rocío del Amor, Fernando García-Torres, Niels Møller Israelsen, Coraline Lapre, Christian Rosenberg Petersen, Ole Bang, Dominik Brouczek, Martin Schwentenwein, Kevin Neumann, Niels Benson, Valery Naranjo

Published: 2025, Last Modified: 26 Feb 2026CoRR 2025EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: This paper aims to evaluate mid-infrared (MIR) Optical Coherence Tomography (OCT) systems as a tool to penetrate different materials and detect sub-surface irregularities. This is useful for monitoring production processes, allowing Non-Destructive Inspection Techniques of great value to the industry. In this exploratory study, several acquisitions are made on composite and ceramics to know the capabilities of the system. In addition, it is assessed which preprocessing and AI-enhanced vision algorithms can be anomaly-detection methodologies capable of detecting abnormal zones in the analyzed objects. Limitations and criteria for the selection of optimal parameters will be discussed, as well as strengths and weaknesses will be highlighted.