Improved spatial-shifting two-wavelength algorithm for 3D shape measurement with a look-up table
| العنوان: | Improved spatial-shifting two-wavelength algorithm for 3D shape measurement with a look-up table |
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| المؤلفون: | Dongdong Xi, Caixia Wang, Xiangcheng Chen, Yajun Wang, Jiaxu Cai, Yuwei Wang |
| المصدر: | Applied Optics. 60:4878 |
| بيانات النشر: | Optica Publishing Group, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Coprime integers, Computer science, Phase (waves), Physics::Optics, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010309 optics, Wavelength, symbols.namesake, Fourier transform, Robustness (computer science), 0103 physical sciences, Lookup table, Range (statistics), symbols, Electrical and Electronic Engineering, Engineering (miscellaneous), Algorithm, Selection (genetic algorithm) |
| الوصف: | Conventional two-wavelength algorithms have been broadly used for three-dimensional shape measurement. However, the maximum unambiguous range of phase unwrapping depends on the least-common multiple of two wavelengths, and thus coprime wavelengths are commonly selected. The recently proposed spatial-shifting two-wavelength (SSTW) algorithm can achieve the maximum unambiguous range with two non-coprime wavelengths, but this algorithm tends to fail for some wavelength selections. To address this problem, this paper presents a general look-up-table-based SSTW (LUT-SSTW) algorithm with arbitrary wavelength selection. The paper also analyzes the phase unwrapping robustness in terms of phase errors and provides guidance for wavelength selection. In addition, an improved LUT-SSTW algorithm is developed to enhance the phase unwrapping robustness, and further relax wavelength selection. Some experiments have been conducted, and their results verify the efficiency of the proposed method. |
| تدمد: | 2155-3165 1559-128X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe4d4980f962351f697d0b4cf5905912Test https://doi.org/10.1364/ao.425084Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....fe4d4980f962351f697d0b4cf5905912 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21553165 1559128X |
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