A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application

Abstract Finding the correspondence between the captured and projected uncoded stripe pattern, which is called the indexing problem, has proved to be difficult to overcome reliably. Due to the interference of the non‐ideal phenomena, the extracted stripe might be lost, increased or shifted undetecta...

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Autores principales:	Jiawen Xue, Yi Hu, Guolin Li, Zhihua Wang, Xiang Xie
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/128bf194b2104b999f3f5c763a0ffb0b
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spelling	oai:doaj.org-article:128bf194b2104b999f3f5c763a0ffb0b2021-12-03T08:34:31ZA novel and robust method of indexing the uncoded stripes for multi‐line based structured light application1350-911X0013-519410.1049/ell2.12161https://doaj.org/article/128bf194b2104b999f3f5c763a0ffb0b2021-12-01T00:00:00Zhttps://doi.org/10.1049/ell2.12161https://doaj.org/toc/0013-5194https://doaj.org/toc/1350-911XAbstract Finding the correspondence between the captured and projected uncoded stripe pattern, which is called the indexing problem, has proved to be difficult to overcome reliably. Due to the interference of the non‐ideal phenomena, the extracted stripe might be lost, increased or shifted undetectably. This letter proposes a graph‐matching based method to address this problem. The captured stripes are categorized into two parts according to whether they should be offset after projection. For the non‐offset stripes, they can be accurately indexed by the predetermined projection pattern. Based on the structural similarity that exists on the two kinds of stripes, we establish two graphs and match them to index the offset stripes fast and effectively. Thus, the iterative process in the previous study is avoided and the troublesome issues are solved. The proposed method is applied to the virtual touchpad scheme to make an arbitrary surface touch‐sensitiveness. Experimental results show that the ameliorated virtual touchpad scheme yields an average touch detection accuracy of 96.07%, and the indexing accuracy evaluated by randomly selected patterns is 100%.Jiawen XueYi HuGuolin LiZhihua WangXiang XieWileyarticleElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENElectronics Letters, Vol 57, Iss 25, Pp 967-969 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Electrical engineering. Electronics. Nuclear engineering TK1-9971 Jiawen Xue Yi Hu Guolin Li Zhihua Wang Xiang Xie A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
description	Abstract Finding the correspondence between the captured and projected uncoded stripe pattern, which is called the indexing problem, has proved to be difficult to overcome reliably. Due to the interference of the non‐ideal phenomena, the extracted stripe might be lost, increased or shifted undetectably. This letter proposes a graph‐matching based method to address this problem. The captured stripes are categorized into two parts according to whether they should be offset after projection. For the non‐offset stripes, they can be accurately indexed by the predetermined projection pattern. Based on the structural similarity that exists on the two kinds of stripes, we establish two graphs and match them to index the offset stripes fast and effectively. Thus, the iterative process in the previous study is avoided and the troublesome issues are solved. The proposed method is applied to the virtual touchpad scheme to make an arbitrary surface touch‐sensitiveness. Experimental results show that the ameliorated virtual touchpad scheme yields an average touch detection accuracy of 96.07%, and the indexing accuracy evaluated by randomly selected patterns is 100%.
format	article
author	Jiawen Xue Yi Hu Guolin Li Zhihua Wang Xiang Xie
author_facet	Jiawen Xue Yi Hu Guolin Li Zhihua Wang Xiang Xie
author_sort	Jiawen Xue
title	A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
title_short	A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
title_full	A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
title_fullStr	A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
title_full_unstemmed	A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
title_sort	novel and robust method of indexing the uncoded stripes for multi‐line based structured light application
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/128bf194b2104b999f3f5c763a0ffb0b
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A novel and robust method of indexing the uncoded stripes for multi‐line based structured light application

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