Pixelated polarizing system for dynamic interferometry events employing a temporal phase unwrapping approach

Parra-Escamilla, Geliztle A.; Serrano-García, David I.; Flores, Jorge L.; Otani, Yukitoshi

doi:10.1016/j.optcom.2019.124862

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…To verify the effectiveness of the proposal, two sets of data from the polarization Michelson interferometer were used and presented earlier in [12,26]. The samples show temporal refractive index variations: In the first, the index variations were generated by a jet flame and in the second, by the movement of a ghost shrimp underwater.…”

Section: Resultsmentioning

confidence: 99%

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Pixelated polarizing system for dynamic interferometry events employing a temporal phase unwrapping algorithm

Parra-Escamilla

Serrano-García

Flores

et al. 2022

Optical Technology and Measurement for Industrial Applications Conference 2022

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We describe a robust system to retrieve the phase using a temporal phase unwrapping approach. Combining the polarization Michelson interferometer with a polarizing sensor and temporal phase unwrapping algorithms the phase unwrapping procedure is not only simplified, but also the computing time is reduced one order of magnitude compared with other algorithms and we can analyze dynamic events in real-time, i.e., 7.4fps. In the approach taken, each pixel is processed independently obtaining the phase difference for a specific time opening the possibility of real-time analysis and the masking process is avoided limiting the noise propagation in spatial manner. Validation experiments are presented.

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Section: Resultsmentioning

confidence: 99%

“…We proposed a temporal phase unwrapping algorithm for dynamic interferometry events by combining the phase demodulation and unwrapping process in one-step. The proposal considers the temporal dependence on the acquired data between two consecutive frames [26]…”

Section: Introductionmentioning

confidence: 99%

Pixelated polarizing system for dynamic interferometry events employing a temporal phase unwrapping algorithm

Parra-Escamilla

Serrano-García

Flores

et al. 2022

Optical Technology and Measurement for Industrial Applications Conference 2022

View full text Add to dashboard Cite

show abstract

“…Current methods for phase unwrapping can be categorized into three main groups: path-dependent methods [12][13][14][15][16][17], minimum norm methods [18][19][20][21], and path-independent (temporal) unwrapping approaches [22][23][24][25]. Temporal unwrapping algorithms excel at unwrapping objects with physical discontinuities, but they face challenges in noisy conditions due to their reliance on the ratio between multiple wavelengths (low and high frequencies), which amplifies noise during phase unwrapping.…”

Section: Introductionmentioning

confidence: 99%

Residue-guided phase unwrapping in fringe projection measurements using second differences

Fang

2023

Meas. Sci. Technol.

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This paper presents an innovative algorithm for unwrapping 2D phase maps with discontinuities. The method employs residue detection for identifying affected areas at a coarse scale. Unlike traditional techniques relying on subjective assessment, this algorithm automates threshold determination, ensuring precision without manual intervention. At the pixel level, it utilizes a bitmap mask based on second differences and the geometric mean formula to locate inconsistencies within the wrapped map precisely. This coarse-to-fine process establishes an optimal threshold for the second difference mask, resulting in highly accurate unwrapped outcomes while maintaining computational efficiency. Compared to conventional methods, this approach delivers superior unwrapped results, making it suitable for diverse applications. Experimental validation includes computer-simulated surfaces and practical fringe projection systems, accompanied by a thorough error analysis.

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Phase-tilt iteration: Accurate and robust phase extraction from random tilt-shift interferograms

Duan

Zong

Zhu

et al. 2021

Optics and Lasers in Engineering

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Pixelated polarizing system for dynamic interferometry events employing a temporal phase unwrapping approach

Cited by 6 publications

References 22 publications

Pixelated polarizing system for dynamic interferometry events employing a temporal phase unwrapping algorithm

Pixelated polarizing system for dynamic interferometry events employing a temporal phase unwrapping algorithm

Residue-guided phase unwrapping in fringe projection measurements using second differences

Phase-tilt iteration: Accurate and robust phase extraction from random tilt-shift interferograms

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