Shape defect measurement by fringe projection profilometry and phase-shifting algorithms

Nogales, Sotero Ordoñes; Servı́n, Manuel; Padilla, Moises; Choque, Ivan; Núñez, Jorge L. Flores; Muñoz, Antonio

doi:10.1117/1.oe.59.1.014107

Cited by 8 publications

(3 citation statements)

References 21 publications

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“…Once pc is determined, it becomes straightforward to find the position of p, and the normal vector n(p) can then be determined by Eq. (7).…”

Section: Fig 2 Light Propagation Process Under Led Illuminationsmentioning

confidence: 99%

“…Unfortunately, its performance is limited since the commonly encountered metallic surfaces are textureless. With the advancements in active 3D measurement accuracy, the structure light reconstruction method [7] and deflectometry method [8] gain popular because of their simple hardware which only consist of several cameras and a projector. These methods rebuild the surface by projecting pattern on the object and determining the phase-shape mapping relationship.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fast calibration based photometric stereo for multiscale metallic surface measurement

Ma,

Liu,

Liu

et al. 2023

Optical Metrology and Inspection for Industrial Applications X

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“…Once pc is determined, it becomes straightforward to find the position of p, and the normal vector n(p) can then be determined by Eq. (7).…”

Section: Fig 2 Light Propagation Process Under Led Illuminationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fast calibration based photometric stereo for multiscale metallic surface measurement

Ma,

Liu,

Liu

et al. 2023

Optical Metrology and Inspection for Industrial Applications X

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“…MFPP finds common applications in high-precision automatic optical inspection (AOI) and three-dimensional measurement equipment 1 . Compared to conventional FPP, MFPP is more suitable for precision measurement requirements in various fields, including electronic products 2 , shape defect 3 , surface mounted technology (SMT) inspection 4 , and ball grid array packaging 5 .…”

Section: Introductionmentioning

confidence: 99%

Flexible continuous phase shifts method for binary defocusing technique with short pitch fringes

Wang,

Zhou,

Zhang

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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An Improved Phase Unwrapping Method Based on Geometric Constraints

Liu

Pan

2022

Springer Proceedings in Physics

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In the field of three-dimensional measurement of structured light, the phase unwrapping method based on geometric constraints has the characteristics of high precision. This method does not need to acquire additional marking images, nor does it need to use expensive hardware equipment, and can achieve rapid and accurate phase unwrapping with the help of a reference plane, which can meet the practical requirements of fast and high precision 3D measurement. However, the 3D measurement method based on geometric constraints has a problem of limited measurement depth, and the maximum measurement depth range is within the phase domain of 2π . If the height of the measured object is beyond this range, normal phase unwrapping cannot be performed. In this paper, the target image is segmented according to the boundary discontinuous feature of the region beyond the measurement range, and then the relative phase unwrapping algorithm based on modulation intensity sorting is used for this region. Finally, the correct absolute phase information of the measured target is recovered. Experiments show that this method can not only increase the depth of measurement but also has better robustness for low phase mass region. The validity and correctness of the proposed method are verified by experiments.

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Shape defect measurement by fringe projection profilometry and phase-shifting algorithms

Cited by 8 publications

References 21 publications

Fast calibration based photometric stereo for multiscale metallic surface measurement

Fast calibration based photometric stereo for multiscale metallic surface measurement

Flexible continuous phase shifts method for binary defocusing technique with short pitch fringes

An Improved Phase Unwrapping Method Based on Geometric Constraints

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