scholarly journals Double-pattern triangular pulse width modulation technique for high-accuracy high-speed 3D shape measurement

2017 ◽  
Vol 25 (24) ◽  
pp. 30177 ◽  
Author(s):  
Yajun Wang ◽  
Chufan Jiang ◽  
Song Zhang
Keyword(s):  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
High Accuracy ◽  
Shape Measurement ◽  
Triangular Pulse ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Modulation Technique

Multilevel symmetric pattern design and optimization for high-speed and high-accuracy 3D shape measurement

2020 ◽  
Vol 126 ◽  
pp. 106103 ◽  
Author(s):  
Yajun Wang ◽  
Jae Sang Hyun ◽  
Song Zhang ◽  
Bin Luo ◽  
Ziping Liu ◽  
...  
Keyword(s):  
High Speed ◽  
High Accuracy ◽  
Shape Measurement ◽  
Pattern Design ◽  
Design And Optimization ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Symmetric Pattern

3D shape measurement method combining sinusoidal pulse width modulation fringe with phase coding fringe

2016 ◽  
Vol 45 (6) ◽  
pp. 0617006
Author(s):  
李彪 Li Biao ◽  
吴海涛 Wu Haitao ◽  
张建成 Zhang Jiancheng ◽  
伏燕军 Fu Yanjun
Keyword(s):  
Pulse Width ◽  
Measurement Method ◽  
Pulse Width Modulation ◽  
Shape Measurement ◽  
Phase Coding ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Sinusoidal Pulse Width Modulation

Real-time microscopic 3D shape measurement based on optimized pulse-width-modulation binary fringe projection

2017 ◽  
Vol 28 (7) ◽  
pp. 075010 ◽  
Author(s):  
Yan Hu ◽  
Qian Chen ◽  
Shijie Feng ◽  
Tianyang Tao ◽  
Hui Li ◽  
...  
Keyword(s):  
Real Time ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Fringe Projection ◽  
Shape Measurement ◽  
3D Shape ◽  
3D Shape Measurement

scholarly journals High Speed 3D Shape Measurement with Temporal Fourier Transform Profilometry

2019 ◽  
Vol 9 (19) ◽  
pp. 4123 ◽  
Author(s):  
Haihua Zhang ◽  
Qican Zhang ◽  
Yong Li ◽  
Yihang Liu
Keyword(s):  
Fourier Transform ◽  
High Speed ◽  
Shape Measurement ◽  
Measurement Technology ◽  
Reconstruction Process ◽  
Measured Object ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Fourier Transform Profilometry ◽  
Dynamic Objects

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). Instead of using the digital light projector, a mechanical projector is employed to generate multi-period phase-shifting fringe patterns sequentially. During the reconstruction process, the phase value of each pixel is calculated independently along the temporal axis and no spectrum filtering operation is performed in a spatial domain. Therefore, high-frequency components containing the detailed information of the measured object effectively remain. The proposed method is suitable for measuring isolated dynamic objects. Only one frame of deformed fringe pattern is required to retrieve one 3D shape of the measured object, so it has the obvious advantage if measuring the dynamic scene at a high speed. A low-cost self-made mechanical projector with fast projection speed is developed to execute the principle-proof experiments, whose results demonstrate the feasibility of measuring isolated dynamic objects.

scholarly journals High-speed real-time 3D shape measurement based on adaptive depth constraint

2018 ◽  
Vol 26 (17) ◽  
pp. 22440 ◽  
Author(s):  
Tianyang Tao ◽  
Qian Chen ◽  
Shijie Feng ◽  
Jiaming Qian ◽  
Yan Hu ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Shape Measurement ◽  
3D Shape ◽  
3D Shape Measurement
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