Color-encoded single-shot computer-generated Moiré profilometry

Abstract A color-encoded single-shot computer-generated Moiré profilometry (CSCGMP) is proposed. Two sinusoidal gratings with a π phase difference are encoded in red and blue channels respectively to combine a composite color grating. While this composite color grating is projected onto the measured...

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Autores principales:	Hechen Zhang, Yiping Cao, Chengmeng Li, Lu Wang, Hongmei Li, Cai Xu, Yingying Wan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fb7afeeb5b1749a18eea67d47192ebfa
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spelling	oai:doaj.org-article:fb7afeeb5b1749a18eea67d47192ebfa2021-12-02T15:49:40ZColor-encoded single-shot computer-generated Moiré profilometry10.1038/s41598-021-90522-x2045-2322https://doaj.org/article/fb7afeeb5b1749a18eea67d47192ebfa2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90522-xhttps://doaj.org/toc/2045-2322Abstract A color-encoded single-shot computer-generated Moiré profilometry (CSCGMP) is proposed. Two sinusoidal gratings with a π phase difference are encoded in red and blue channels respectively to combine a composite color grating. While this composite color grating is projected onto the measured object, the corresponding color deformed pattern can be captured. So two deformed patterns with a π phase difference are separated from its red and blue components respectively. After normalization and subtraction, the AC component of both separated deformed patterns can be extracted. If this AC component respectively multiplied by the two AC components of fringe patterns of reference plane with a π/2 phase difference prepared and saved on the computer in advance, two computer-generated Moiré fringes just respectively standing for sine and cosine of phase which is modulated by the height of the object relative to the reference plane are figured out. So the 3D shape of the measured object can be reconstructed with normal computer-generated Moiré profilometry. Both simulation and experimental results show the feasibility and validity of the proposed method. It has potential in real-time 3D measurement due to its single-shot feature.Hechen ZhangYiping CaoChengmeng LiLu WangHongmei LiCai XuYingying WanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hechen Zhang Yiping Cao Chengmeng Li Lu Wang Hongmei Li Cai Xu Yingying Wan Color-encoded single-shot computer-generated Moiré profilometry
description	Abstract A color-encoded single-shot computer-generated Moiré profilometry (CSCGMP) is proposed. Two sinusoidal gratings with a π phase difference are encoded in red and blue channels respectively to combine a composite color grating. While this composite color grating is projected onto the measured object, the corresponding color deformed pattern can be captured. So two deformed patterns with a π phase difference are separated from its red and blue components respectively. After normalization and subtraction, the AC component of both separated deformed patterns can be extracted. If this AC component respectively multiplied by the two AC components of fringe patterns of reference plane with a π/2 phase difference prepared and saved on the computer in advance, two computer-generated Moiré fringes just respectively standing for sine and cosine of phase which is modulated by the height of the object relative to the reference plane are figured out. So the 3D shape of the measured object can be reconstructed with normal computer-generated Moiré profilometry. Both simulation and experimental results show the feasibility and validity of the proposed method. It has potential in real-time 3D measurement due to its single-shot feature.
format	article
author	Hechen Zhang Yiping Cao Chengmeng Li Lu Wang Hongmei Li Cai Xu Yingying Wan
author_facet	Hechen Zhang Yiping Cao Chengmeng Li Lu Wang Hongmei Li Cai Xu Yingying Wan
author_sort	Hechen Zhang
title	Color-encoded single-shot computer-generated Moiré profilometry
title_short	Color-encoded single-shot computer-generated Moiré profilometry
title_full	Color-encoded single-shot computer-generated Moiré profilometry
title_fullStr	Color-encoded single-shot computer-generated Moiré profilometry
title_full_unstemmed	Color-encoded single-shot computer-generated Moiré profilometry
title_sort	color-encoded single-shot computer-generated moiré profilometry
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fb7afeeb5b1749a18eea67d47192ebfa
work_keys_str_mv	AT hechenzhang colorencodedsingleshotcomputergeneratedmoireprofilometry AT yipingcao colorencodedsingleshotcomputergeneratedmoireprofilometry AT chengmengli colorencodedsingleshotcomputergeneratedmoireprofilometry AT luwang colorencodedsingleshotcomputergeneratedmoireprofilometry AT hongmeili colorencodedsingleshotcomputergeneratedmoireprofilometry AT caixu colorencodedsingleshotcomputergeneratedmoireprofilometry AT yingyingwan colorencodedsingleshotcomputergeneratedmoireprofilometry
_version_	1718385728357924864

Color-encoded single-shot computer-generated Moiré profilometry

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