Results 41 to 50 of about 355 (113)

Improving the Performance of 3D Shape Measurement of Moving Objects by Fringe Projection and Data Fusion

IEEE Access, 2021
Fringe projection profilometry (FPP) has been widely studied for measurements of three-dimensional (3D) shapes. However, the measurement of moving objects is still a challenging problem associated with commonly used methods.
Chengpu Duan, Jun Tong, Lei Lu, Jiangtao Xi, Yanguang Yu, Qinghua Guo   +5 more
doaj   +1 more source

Hybrid calibration procedure for fringe projection profilometry based on stereo-vision and polynomial fitting

, 2020
The key to accurate 3D shape measurement in Fringe Projection Profilometry (FPP) is the proper calibration of the measurement system. Current calibration techniques rely on phase-coordinate mapping (PCM) or back-projection stereo-vision (SV) methods. PCM
Marrugo, Andres G., Romero, Lenny A., Vargas, Raul, Zhang, Song   +3 more
core   +1 more source

Accurate characterisation of hole geometries by fringe projection profilometry [PDF]

, 2017
Accurate localisation and characterisation of holes is often required in the field of automated assembly and quality control. Compared to time consuming coordinate measuring machines (CMM), fringe-projection-based 3D scanners offer an attractive ...
Harshana Dantanarayana (1253958), Huimin Yue (7206737), Jonathan Huntley (1248681), Yuxiang Wu (748543)   +3 more
core   +4 more sources

A Self-Adaptive Multiple Exposure Image Fusion Method for Highly Reflective Surface Measurements

Machines, 2022
Fringe projection profilometry (FPP) has been extensively applied in various fields for its superior fast speed, high accuracy and high data density.
Xiaobo Chen, Hui Du, Jinkai Zhang, Xiao Yang, Juntong Xi   +4 more
doaj   +1 more source

Temporal phase unwrapping using deep learning

, 2019
The multi-frequency temporal phase unwrapping (MF-TPU) method, as a classical phase unwrapping algorithm for fringe projection profilometry (FPP), is capable of eliminating the phase ambiguities even in the presence of surface discontinuities or ...
Asundi, Anand, Chen, Qian, Feng, Shijie, Huang, Lei, Tao, Tianyang, Trusiak, Maciej, Yin, Wei, Zuo, Chao   +7 more
core   +1 more source

Development of a calibration pipeline for a monocular-view structured illumination 3D sensor utilizing an array projector [PDF]

, 2021
Commercial off-the-shelf digital projection systems are commonly used in active structured illumination photogrammetry of macro-scale surfaces due to their relatively low cost, accessibility, and ease of use.
Wong, Eugene
core  

Single-Shot Fringe Projection Profilometry Based on LC-SLM Modulation and Polarization Multiplexing

Photonics
Fringe projection profilometry (FPP) is extensively utilized for the 3D measurement of various specimens. However, traditional FPP typically requires at least three phase-shifted fringe patterns to achieve a high-quality phase map.
Long Shu, Junxiang Li, Yijun Du, Chen Fan, Zirui Hu, Huan Chen, Hong Zhao, Zixin Zhao   +7 more
doaj   +1 more source

Fringe Pattern Analysis With Message Passing Based Expectation Maximization for Fringe Projection Profilometry

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, Jiangtao Xi, Limei Song, Yanguang Sunny Yu, Yongkai Yin, Xiang Peng   +5 more
doaj   +1 more source

PROFILOMETRY OF SOLIDS UTILIZING STEREO PROJECTION AND CO-PHASE OF STRUCTURED LIGHT [PDF]

, 2021
"Measurement of three-dimensional objects has become a current industrial issue to improve manufacturing verification processes and reverse engineering.
Sotero Ordoñes
core  

Dual-frequency angular-multiplexed fringe projection profilometry with deep learning: breaking hardware limits for ultra-high-speed 3D imaging

Opto-Electronic Advances
Recent 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, Yifan Liu, Shijie Feng, Wei Yin, Jiaming Qian, Yixuan Li, Hang Zhang, Maciej Trusiak, Malgorzata Kujawinska, Qian Chen, Chao Zuo   +10 more
doaj   +1 more source