scholarly journals Modified Gray-Level Coding Method for Absolute Phase Retrieval

Sensors ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 2383 ◽  
Author(s):  
Xiangcheng Chen ◽  
Shunping Chen ◽  
Jie Luo ◽  
Mengchao Ma ◽  
Yuwei Wang ◽  
...  
Keyword(s):  
Phase Retrieval ◽  
Gray Level ◽  
Absolute Phase ◽  
Coding Method

An improved gray-level coding method for absolute phase measurement based on half-period correction

2020 ◽  
Vol 128 ◽  
pp. 106012 ◽  
Author(s):  
Bolin Cai ◽  
Yu Yang ◽  
Jun Wu ◽  
Yuwei Wang ◽  
Mengyu Wang ◽  
...  
Keyword(s):  
Phase Measurement ◽  
Half Period ◽  
Gray Level ◽  
Absolute Phase ◽  
Coding Method

Novel phase-coding method for absolute phase retrieval

2012 ◽  
Vol 37 (11) ◽  
pp. 2067 ◽  
Author(s):  
Yajun Wang ◽  
Song Zhang
Keyword(s):  
Phase Retrieval ◽  
Phase Coding ◽  
Absolute Phase ◽  
Coding Method

An improved phase-coding method for absolute phase retrieval based on the path-following algorithm

2019 ◽  
Vol 122 ◽  
pp. 65-73 ◽  
Author(s):  
Shenzhen Lv ◽  
Qiang Sun ◽  
Jianbai Yang ◽  
Yang Jiang ◽  
Feng Qu ◽  
...  
Keyword(s):  
Phase Retrieval ◽  
Path Following ◽  
Phase Coding ◽  
Absolute Phase ◽  
Coding Method ◽  
Path Following Algorithm

Optimized phase-coding method for absolute phase retrieval based on K-means algorithm

2021 ◽  
pp. 1-8
Author(s):  
Bolin Cai ◽  
Yuan Shen ◽  
Jun Wu ◽  
Yu Yang ◽  
Yuwei Wang ◽  
...  
Keyword(s):  
Phase Retrieval ◽  
Phase Coding ◽  
Absolute Phase ◽  
Coding Method

Phase-shifting coding method for absolute phase retrieval

2019 ◽  
Vol 58 (10) ◽  
pp. 1
Author(s):  
Han Yuan ◽  
Guoying Feng ◽  
Hongru Li ◽  
Lei Cui ◽  
Zhongyi Bao
Keyword(s):  
Phase Retrieval ◽  
Phase Shifting ◽  
Absolute Phase ◽  
Coding Method

scholarly journals Absolute Phase Retrieval Using One Coded Pattern and Geometric Constraints of Fringe Projection System

2018 ◽  
Vol 8 (12) ◽  
pp. 2673 ◽  
Author(s):  
Xu Yang ◽  
Chunnian Zeng ◽  
Jie Luo ◽  
Yu Lei ◽  
Bo Tao ◽  
...  
Keyword(s):  
Phase Shift ◽  
Phase Retrieval ◽  
Code Word ◽  
Geometric Constraints ◽  
Fringe Projection ◽  
Average Intensity ◽  
Fringe Order ◽  
Projection System ◽  
Absolute Phase ◽  
Three Phase

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. This paper proposes a method for absolute phase retrieval using only one coded pattern. A total of four patterns including one coded pattern and three phase-shift patterns are projected, captured, and processed. The wrapped phase, as well as average intensity and intensity modulation, are calculated from three phase-shift patterns. A code word encrypted into the coded pattern can be calculated using the average intensity and intensity modulation. Based on geometric constraints of fringe projection system, the minimum fringe order map can be created, upon which the fringe order can be calculated from the code word. Compared with the conventional method, the measurement depth range is significantly improved. Finally, the wrapped phase can be unwrapped for absolute phase map. Since only four patterns are required, the proposed method is suitable for real-time measurement. Simulations and experiments have been conducted, and their results have verified the proposed method.

Sign in / Sign up

Export Citation Format

Share Document