Articles with "projection profilometry" as a keyword



Microscopic fringe projection profilometry: A review

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Published in 2020 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2020.106192

Abstract: Abstract Structured light three-dimensional (3D) measurement technology is considered one of the most reliable 3D data acquisition methods. Driven by the demand for high-precision 3D data acquisition for miniaturized samples in many fields such as… read more here.

Keywords: projection; projection profilometry; fringe projection; microscopic fringe ... See more keywords

Multi-factor quality assessment of digital speckle pattern for speckle projection profilometry

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Published in 2024 at "Measurement Science and Technology"

DOI: 10.1088/1361-6501/ad646a

Abstract: The digital speckle pattern (DSP) is an essential component in the speckle projection profilometry (SPP) task, its quality directly affects the results of three-dimensional (3D) shape reconstruction. However, the SPP field lacks specialized numerical metrics… read more here.

Keywords: quality; speckle projection; digital speckle; projection profilometry ... See more keywords

Double-Shot 3D Shape Measurement With a Dual-Branch Network for Structured Light Projection Profilometry

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Published in 2024 at "IEEE Transactions on Circuits and Systems for Video Technology"

DOI: 10.1109/tcsvt.2024.3502134

Abstract: The structured light (SL)-based three-dimensional (3D) measurement techniques with deep learning have been widely studied to improve measurement efficiency, among which fringe projection profilometry (FPP) and speckle projection profilometry (SPP) are two popular methods. However,… read more here.

Keywords: projection; branch; structured light; network ... See more keywords

Phase-to-Coordinates Calibration for Fringe Projection Profilometry Using Gaussian Process Regression

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Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"

DOI: 10.1109/tim.2022.3162275

Abstract: In the task of 3-D topography measurement by fringe projection profilometry (FPP), it is crucial to establish mapping from the phase map to the 3-D coordinates, known as 3-D calibration. The traditional methods are prone… read more here.

Keywords: projection profilometry; regression; calibration; fringe projection ... See more keywords
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Phase-Shifting Temporal Phase Unwrapping Algorithm for High-Speed Fringe Projection Profilometry

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Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"

DOI: 10.1109/tim.2023.3252627

Abstract: Fringe projection profilometry based on temporal phase unwrapping (TPU) without error propagation has been widely used to measure the 3-D shape of the complex scene. This article develops a phase-shifting temporal unwrapping (PS-TPU) algorithm to… read more here.

Keywords: projection profilometry; phase unwrapping; fringe; fringe projection ... See more keywords

Three-image composite encoding method for fast fringe projection profilometry with enhanced efficiency and accuracy

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Published in 2025 at "Optical Engineering"

DOI: 10.1117/1.oe.64.6.063102

Abstract: Abstract. Fringe projection profilometry (FPP) is generally used to measure the 3D shape of an object because of the advantages of noncontact operation, full-field acquisition, and high resolution based on phase-shifted demodulation and multifrequency unwrapping… read more here.

Keywords: fringe; composite encoding; image; fringe projection ... See more keywords

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

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Published in 2020 at "Applied optics"

DOI: 10.1364/ao.383602

Abstract: 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… read more here.

Keywords: calibration; fringe projection; projection profilometry; projection ... See more keywords

LiteF2DNet: a lightweight learning framework for 3D reconstruction using fringe projection profilometry.

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Published in 2023 at "Applied optics"

DOI: 10.1364/ao.483303

Abstract: Fringe projection profilometry (FPP) is the most commonly used structured light approach for 3D object profiling. Traditional FPP algorithms have multistage procedures that can lead to error propagation. Deep-learning-based end-to-end models currently have been developed… read more here.

Keywords: projection profilometry; framework; litef2dnet lightweight; fringe projection ... See more keywords

Single-frame two-stage fringe projection profilometry based on deep learning.

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Published in 2024 at "Applied optics"

DOI: 10.1364/ao.545804

Abstract: For dynamic objects with surface discontinuities, traditional fringe projection profilometry struggles to obtain accurate three-dimensional information. To address this challenge, this paper presents a single-frame, dual-stage fringe projection profilometry technique that requires only one deformed… read more here.

Keywords: fringe; single frame; projection profilometry; fringe projection ... See more keywords

Accurate and robust calibration method based on pattern geometric constraints for fringe projection profilometry.

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Published in 2017 at "Applied optics"

DOI: 10.1364/ao.56.000784

Abstract: In fringe projection profilometry, the relationship between phase and height is of the utmost significance to perform accurate measurement. To enhance accuracy and robustness, a calibration method is presented based on pattern geometric constraints. By… read more here.

Keywords: based pattern; calibration method; projection profilometry; method ... See more keywords

Large DOF microscopic fringe projection profilometry with a coaxial light-field structure.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.452361

Abstract: Fringe projection profilometry (FPP) has been widely researched for three-dimensional (3D) microscopic measurement during recent decades. Nevertheless, some disadvantages arising from the limited depth of field and occlusion still exist and need to be further… read more here.

Keywords: light field; projection profilometry; field; fringe projection ... See more keywords