Results 31 to 40 of about 394 (147)
SoftwareX, 2021 Fringe projection profilometry and off-axis digital holographic interferometry are two techniques commonly used for non-contact optical surface measurement and movement tracking; however, they can be difficult to implement due to the complex software ...
Parsa Omidi +4 more
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Phase Error Analysis and Correction for Crossed-Grating Phase-Shifting Profilometry
Sensors, 2021 Crossed-grating phase-shifting profilometry (CGPSP) has great utility in three-dimensional shape measurement due to its ability to acquire horizontal and vertical phase maps in a single measurement.
Fuqian Li, Wenjing Chen
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Fringe Quality Map for Fringe Projection Profilometry in LabVIEW
Optica Pura y Aplicada, 2018 The phase retrieval process is mainly affected by local shadows, irregular surface brightness and fringe discontinuities. To overcome these problems, image-processing strategies are carried out such as binary masks, interpolation techniques, and filtering. Similarly, many unwrapping algorithms have been developed to handle phase unwrapping errors in
Pineda, J. +5 more
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Microscopic fringe projection profilometry: A review
Optics and Lasers in Engineering, 2020 Abstract Structured light three-dimensional (3D) measurement technology is considered one of the most reliable 3D data acquisition methods. Driven by the demand for high-precision 3D data acquisition for miniaturized samples in many fields such as surface condition analysis, mechanical function test, and micro-electro-mechanical systems (MEMS ...
Yan Hu, Qian Chen, Shijie Feng, Chao Zuo
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Valid point detection in fringe projection profilometry
Optics Express, 2015 Fringe projection profilometry has become one of the most popular 3D information acquisition techniques being developed over the past three decades. However, the general and practical issues on valid point detection, including object segmentation, error correction and noisy point removal, have not been studied thoroughly.
Haixia, Wang +2 more
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Micromachines, 2023 It is challenging to stably and rapidly achieve accurate absolute phase retrieval for isolated objects with a single-shot pattern in fringe projection profilometry (FPP).
Min Xu +4 more
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Improved geometrical model of fringe projection profilometry
Optics Express, 2014 The accuracy performance of fringe projection profilometry (FPP) depends on accurate phase-to-height (PTH) mapping and system calibration. The existing PTH mapping is derived based on the condition that the plane formed by axes of camera and projector is perpendicular to the reference plane, and measurement error occurs when the condition is not met ...
Huang, Zhengrong +4 more
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Optical Fringe Projection: A Straightforward Approach to 3D Metrology
MetrologyOptical fringe projection is an outstanding technology that significantly enhances three-dimensional (3D) metrology in numerous applications in science and engineering.
Rigoberto Juarez-Salazar +2 more
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High Speed 3D Shape Measurement with Temporal Fourier Transform Profilometry
Applied Sciences, 2019 A novel high-speed 3D shape measurement technology called temporal Fourier transform profilometry (TFTP for short) is proposed by combining the merits of Fourier transform profilometry (FTP) and phase-measuring profilometry (PMP).
Haihua Zhang +3 more
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Measurement Simulation System of Fringe Projection Profilometry Based on Ray Tracing
IEEE Access, 2023 Fringe projection profilometry (FPP) plays an important role in the quality control of complex surface workpieces. Simulation using realistic image synthesis referring to physical sensors provide valid measures for the design and optimization of FPP ...
Qiushuang Zhang +4 more
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