2024/01/29 by Steve A. Johnson, Hal Gee, Johnson, Steven +5
Computer Science · Engineering · #Advanced Measurement and Metrology Techniques #FOS: Physical sciences #Optical Systems and Laser Technology #Optical measurement and interference techniques #Optics (physics.optics)
paper · pdf · doi:10.48550/arxiv.2401.16171
openalex publication_date 2024/01/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Phase shift profilometry has become a standard technique for recording the surface of an object using the projection of sinusoidal patterns. We present a method of projecting the patterns via a pair of single-mode optical fibers mounted within a needle. The system presented can capture sub-millimetre precision depth profiles at 60 frames per second. The key features of the system that enable the high-speed imaging are the creation of an automated calibration system and developments in the image unwrapping and reconstruction algorithms to produce high fidelity surface measurements. These methods produce a compact projection system capable of accurate and fast profilometry.