Results 21 to 30 of about 3,752 (140)
Adaptive Binocular Fringe Dynamic Projection Method for High Dynamic Range Measurement
Sensors, 2019 Three-dimensional measurement with fringe projection sensor has been commonly researched. However, the measurement accuracy and efficiency of most fringe projection sensors are still seriously affected by image saturation and the non-linear effects of ...
Changzhi Yu +3 more
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In-process measurement and monitoring of a polymer laser sintering powder bed with fringe projection
Materials & Design, 2018 We investigate the feasibility of using fringe projection to monitor the powder bed of a polyamide 12 polymer laser sintering machine. In particular, we demonstrate the ability of fringe projection to identify a number of defects arising during the ...
Nicholas Southon +3 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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Quantitative Schlieren imaging based on fringe projection [PDF]
EPJ Web of Conferences, 2022 An effective yet simple quantitative synthetic Schlieren imaging technique is presented in this paper. A multiplexed fringe pattern displayed on a common laptop screen is observed through a disturbed medium resulting in a change of the fringe pattern ...
Psota Pavel +6 more
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CALIBRATION EVALUATION AND CALIBRATION STABILITY MONITORING OF FRINGE PROJECTION BASED 3D SCANNERS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013 In this work a simple new method for calibration evaluation and calibration stability monitoring of fringe projection based 3D scanners is introduced. This method is based on high precision point correspondence finding of fringe projection sensors using ...
C. Bräuer-Burchardt +5 more
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Sensors, 2022 The camera and projector are indispensable hardware parts of a color fringe projection 3D measurement system. Chromatic aberration between different color channels of the projector and camera has an impact on the measurement accuracy of the color fringe ...
Yuzhuo Zhang +4 more
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3D measurement using fringe projection profilometry
Компьютерная оптика, 2023 This work is devoted to measuring the depth of the 3D object using the structured light method, in particular, phase shift profilometry. Theoretical studies on the methods of three-dimensional measurement systems and fringe projection profilometry are ...
M.N. Alkhatib +4 more
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Investigation of Phase Pattern Modulation for Digital Fringe Projection Profilometry
Measurement Science Review, 2020 The fringe projection profilometry with sinusoidal patterns based on phase-shifting algorithms is commonly distorted by the nonlinear intensity response of commercial projector.
Liu Cheng-Yang, Wang Chung-Yi
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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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Untrained deep learning-based fringe projection profilometry
APL Photonics, 2022 Deep learning-based fringe projection profilometry (FPP) shows potential for challenging three-dimensional (3D) reconstruction of objects with dynamic motion, complex surface, and extreme environment. However, the previous deep learning-based methods are
Haotian Yu +4 more
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