High-Accuracy 3-D Sensor for Rivet Inspection Using Fringe Projection Profilometry with Texture Constraint [PDF]
Sensors, 2020 Riveted workpieces are widely used in manufacturing; however, current inspection sensors are mainly limited in nondestructive testing and obtaining the high-accuracy dimension automatically is difficult.
Yunfan Wang +3 more
doaj +2 more sources
Single Fringe Phase Retrieval for Translucent Object Measurements Using a Deep Convolutional Generative Adversarial Network [PDF]
SensorsFringe projection profilometry (FPP) is a measurement technique widely used in the field of 3D reconstruction. However, it faces issues of phase shift and reduced fringe modulation depth when measuring translucent objects, leading to decreased ...
Jiayan He +4 more
doaj +2 more sources
Three-dimensional shape and deformation measurement on complex structure parts [PDF]
Scientific Reports, 2022 Stereo digital image correlation technique (stereo-DIC or 3D-DIC) has been widely used in three-dimensional (3D) shape and deformation measurement due to its high accuracy and flexibility.
Zhoujie Wu +5 more
doaj +2 more sources
Phase Error Reduction for a Structured-Light 3D System Based on a Texture-Modulated Reprojection Method [PDF]
SensorsFringe projection profilometry (FPP), with benefits such as high precision and a large depth of field, is a popular 3D optical measurement method widely used in precision reconstruction scenarios.
Chenbo Shi +9 more
doaj +2 more sources
Measurement Simulation System of Fringe Projection Profilometry Based on Ray Tracing
IEEE Access, 2023 Fringe projection profilometry (FPP) plays an important role in the quality control of complex surface workpieces. Simulation using realistic image synthesis referring to physical sensors provide valid measures for the design and optimization of FPP ...
Qiushuang Zhang +4 more
doaj +1 more source
3D measurement using fringe projection profilometry
Компьютерная оптика, 2023 This work is devoted to measuring the depth of the 3D object using the structured light method, in particular, phase shift profilometry. Theoretical studies on the methods of three-dimensional measurement systems and fringe projection profilometry are ...
M.N. Alkhatib +4 more
doaj +1 more source
A Markov random field based method for removing invalid unwrapping phase points in 3D reconstruction
IET Image Processing, Volume 17, Issue 12, Page 3477-3487, 16 October 2023., 2023 The proposed method is an effective invalid points removal method for 3D reconstruction, which formulates the unwrapped phase map and the generated mask map as two Markov random fields (MRFs). Moreover, this method designs these two MRFs as the energy function and use iterative method to minimize the function, finally obtaining the optimal threshold to
Jinfeng Gao +4 more
wiley +1 more source
Intensity-Averaged Double Three-Step Phase-Shifting Algorithm with Color-Encoded Fringe Projection
Photonics, 2022 Fringe projection profilometry (FPP) has been broadly employed for three-dimensional shape measurements. However, the measurement accuracy suffers from gamma nonlinearity.
Yuwei Wang +3 more
doaj +1 more source
A gamma self‐correction method via chord distribution coding in fringe projection profilometry
Electronics Letters, Volume 58, Issue 8, Page 315-317, April 2022., 2022 Abstract This paper presents a gamma self‐correction method via chord distribution coding to eliminate the system's gamma effect. For this purpose, the prior gamma‐Gaussian characteristic value, which is extracted by chord distribution Gaussian fitting of the preset gamma's wrapped phase, is used to map the projector's gamma.
Gaoxu Deng +4 more
wiley +1 more source
Journal of Sensors, Volume 2022, Issue 1, 2022., 2022 Color crosstalk is challenging for color fringe projection profilometry, which will cause color imbalance and phase‐shift deviation, thus resulting in phase error. To address this challenge, this paper presents a blind crosstalk correction method for color phase‐shifting fringe projection profilometry without crosstalk calibration.
Jun Yang +7 more
wiley +1 more source