Results 61 to 70 of about 355 (113)

Deep Learning Enhanced Dynamic 3-Dimensional Shape Measurement Using Single-Shot Spatial Multiplexing and Transformer-Based Phase Retrieval

open access: yesAdvanced Devices & Instrumentation
Real-time, high-precision 3-dimensional (3D) imaging is essential for applications such as industrial inspection, robotic navigation, and human–computer interaction.
Yixuan Li   +5 more
doaj   +1 more source

Novel calibration technique for hybrid structured-light three-dimensional measurement system [PDF]

open access: yesMATEC Web of Conferences
Hybrid structured-light measurement technique is used for form measurement of structured composite surfaces. A hybrid structured-light measurement system contains a phase measuring deflectometry (PMD) subsystem and a fringe projection profilometry (FPP ...
Xu Yongjia   +3 more
doaj   +1 more source

3D Reconstruction Based On Pair Camera and Projector with Sub-Pixel Accuracy [PDF]

open access: yes, 2014
In this paper, 3D reconstruction is done by using fringe projection profilometry (FPP). Fringe pattern is analyzed by using inverse function analysis (IFA) that is mathematically prove to improve accuracy compare to traditional methods. However, it known
Zainal, Muhammad Aminuddin
core  

Multimodal adaptive temporal phase unwrapping using deep learning and physical priors [PDF]

open access: yes
In optical 3D measurement, temporal phase unwrapping (TPU) is widely employed in fringe projection and interferometry, as it is crucial for resolving wrapped phase ambiguities and obtaining absolute phase distributions.
Chen, Qian   +7 more
core   +1 more source

New approach to improve the performance of fringe pattern profilometry using multiple triangular patterns for the measurement of objects in motion [PDF]

open access: yes, 2014
Fringe pattern profilometry using triangular patterns and intensity ratios is a robust and computationally efficient method in three-dimensional shape measurement technique.
Jiangtao Xi   +4 more
core   +2 more sources

Hybrid 3D Shape Measurement Using the MEMS Scanning Micromirror

open access: yesMicromachines, 2019
A surface with large reflection variations represents one of the biggest challenges for optical 3D shape measurement. In this work, we propose an alternative hybrid 3D shape measurement approach, which combines the high accuracy of fringe projection ...
Tao Yang   +3 more
doaj   +1 more source

Effective bias removal for fringe projection profilometry using the dual-tree complex wavelet transform [PDF]

open access: yes, 2014
Author name used in this publication: Daniel Pak-Kong Lun2012-2013 > Academic research: refereed > Publication in refereed journalVersion of ...
Lun, PKD, Ng, WWL
core   +1 more source

PRACTICAL EIGHT-FRAME ALGORITHMS FOR FRINGE PROJECTION PROFILOMETRY [PDF]

open access: yes, 2013
In this paper we present several eight-frame algorithms for their use in phase shifting profilometry and their application for the analysis of semi-fossilized materials.
AMALIA MARTINEZ GARCIA   +5 more
core  

Robust measurement of 3D human skin features via fringe projection profilometry [PDF]

open access: yes, 2020
Fringe Projection Profilometry (FPP) is becoming an essential tool in the measurementof 3D human skin features due to its non-contact nature and high precision. Skinfeatures are necessary for monitoring and characterize lesions of the skin.
Pineda Castro, Jesús David
core  

Deep-learning-enabled temporally super-resolved multiplexed fringe projection profilometry: high-speed kHz 3D imaging with low-speed camera

open access: yesPhotoniX
Recent advances in imaging sensors and digital light projection technology have facilitated rapid progress in 3D optical sensing, enabling 3D surfaces of complex-shaped objects to be captured with high resolution and accuracy.
Wenwu Chen   +6 more
doaj   +1 more source

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