Results 41 to 50 of about 3,752 (140)
Applied Sciences, 2018 Fringe projection technologies have been widely used for three-dimensional (3D) shape measurement. One of the critical issues is absolute phase recovery, especially for measuring multiple isolated objects.
Xu Yang +5 more
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Light-Field-Assisted Phase Unwrapping of Fringe Projection Profilometry
IEEE Access, 2021 A phase unwrapping algorithm assisted by light field without additional time coding is proposed, which can be used in various aspects of optical imaging and metrology.
Ziwei Wang +8 more
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Step Surface Profile Measurement Based on Fringe Projection Phase-Shifting Using Selective Sampling
Photonics, 2021 Fringe projection is a non-contact optical method that is widely used in the optical precision measurement of complex stepped surfaces. However, the accuracy of the fringe phase extraction employed has a direct impact on the measurement precision of the ...
Songsong Zhang, Haisong Huang
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Calculation of Fringe Angle with Enhanced Phase Sensitivity and 3D Reconstruction
SensorsIn the field of fringe projection profilometry, phase sensitivity is a critical factor influencing the precision of object measurements. Traditional techniques that employ basic horizontal or vertical fringe projection often do not achieve optimal levels
Hongyang Wang +6 more
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Opto-Electronic AdvancesRecent advancements in artificial intelligence have transformed three-dimensional (3D) optical imaging and metrology, enabling high-resolution and high-precision 3D surface geometry measurements from one single fringe pattern projection.
Wenwu Chen +10 more
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COMPACT HANDHELD FRINGE PROJECTION BASED UNDERWATER 3D-SCANNER [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 A new, fringe projection based compact handheld 3D scanner for the surface reconstruction of measurement objects under water is introduced. The weight of the scanner is about 10 kg and can be used in a water depth of maximal 40 metres.
C. Bräuer-Burchardt +4 more
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Theoretical and Applied Mechanics Letters, 2016 Although the structured light system that uses digital fringe projection has been widely implemented in three-dimensional surface profile measurement, the measurement system is susceptible to non-linear error.
Chen Xiong +3 more
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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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Simultaneous Measurement of In-Plane and Out-of-Plane Displacements Using Talbot Fringe Projection
International Journal of Optics, 2020 The fringe projection technique has been widely used in optical measurements. In this paper, we demonstrate a scheme to measure the 3D displacement of a deformed sample using Talbot fringe projection. In this process, we designed a two-dimensional square
Haibin Sun, Tingting Liu
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IEEE Access, 2016 Fringe projection profilometry (FPP) is a popular optical 3-D imaging approach, in which the images of deformed fringe patterns are analyzed to extract object surfaces (i.e., height maps of object surfaces).
Qinghua Guo +5 more
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