Joint Coding Strategy of the Phase Domain and Intensity Domain for Absolute Phase Retrieval

Zheng, Yabing; Jin, Yi; Duan, Minghui; Zhu, Changan; Chen, Enhong

doi:10.1109/tim.2021.3088471

Cited by 12 publications

(1 citation statement)

References 26 publications

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“…For an FPP system, the imaging model can be expressed as following [21] x y z is the spatial point of the world coordinate; C and P denote the multiplication of intrinsic and extrinsic parameters of the camera and projector respectively. According to ref.…”

Section: The Geometric Constraint Methodsmentioning

confidence: 99%

Measurement depth modeling and extension for geometric constraint phase unwrapping method

2024

International Conference on Optical and Photonic Engineering (icOPEN 2023)

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As an important phase unwrapping method in Fringe Projecting Profilometry, the geometric constraint enables pixel-by-pixel computation while avoiding the projection of additional patterns. However, its measurement depth is limited to one fringe period and influenced by multiple factors from the camera-projector system. There is still a lack of a generalized model that can describe the measurement depth. In this paper, to completely understand the variables related to the measurement depth, we analyze the unwrapping process of geometric constraint and derive a generalized model. To validate the key variables in the model, we establish a virtual camera-projector system and conduct simulations. Based on the simulation results, we propose four ways to extend the measurement depth, including (a) selecting a reference plane farther away from the camera, (b) designing the fringe patterns with fewer periods, (c) using the shorter focal lens and (d) reducing the camera-projector distance.

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Section: The Geometric Constraint Methodsmentioning

confidence: 99%

Measurement depth modeling and extension for geometric constraint phase unwrapping method

2024

International Conference on Optical and Photonic Engineering (icOPEN 2023)

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Quasi-Periodic Phase Coding for Long-Depth-Range 3-D Measurements of Moving Objects

Duan

Chen

Sun

et al. 2022

IEEE Trans. Instrum. Meas.

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An Optimizing Diffusion Kernel-Based Binary Encoding Strategy With Genetic Algorithm for Fringe Projection Profilometry

Zhu

Zhou

et al. 2022

IEEE Trans. Instrum. Meas.

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Joint Coding Strategy of the Phase Domain and Intensity Domain for Absolute Phase Retrieval

Cited by 12 publications

References 26 publications

Measurement depth modeling and extension for geometric constraint phase unwrapping method

Measurement depth modeling and extension for geometric constraint phase unwrapping method

Quasi-Periodic Phase Coding for Long-Depth-Range 3-D Measurements of Moving Objects

An Optimizing Diffusion Kernel-Based Binary Encoding Strategy With Genetic Algorithm for Fringe Projection Profilometry

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