Optical Dual Laser Based Sensor Denoising for OnlineMetal Sheet Flatness Measurement Using Hermite Interpolation
dc.contributor.author | Alonso Nieto, Marcos | |
dc.contributor.author | Izaguirre Altuna, Alberto | |
dc.contributor.author | Andonegui Artegui, Imanol | |
dc.contributor.author | Graña Romay, Manuel María | |
dc.date.accessioned | 2020-10-15T10:02:12Z | |
dc.date.available | 2020-10-15T10:02:12Z | |
dc.date.issued | 2020-09-22 | |
dc.identifier.citation | Sensors 20(18) : (2020) // Article ID 5441 | es_ES |
dc.identifier.issn | 1424-8220 | |
dc.identifier.uri | http://hdl.handle.net/10810/46907 | |
dc.description.abstract | Flatness sensors are required for quality control of metal sheets obtained from steel coils by roller leveling and cutting systems. This article presents an innovative system for real-time robust surface estimation of flattened metal sheets composed of two line lasers and a conventional 2D camera. Laser plane triangulation is used for surface height retrieval along virtual surface fibers. The dual laser allows instantaneous robust and quick estimation of the fiber height derivatives. Hermite cubic interpolation along the fibers allows real-time surface estimation and high frequency noise removal. Noise sources are the vibrations induced in the sheet by its movements during the process and some mechanical events, such as cutting into separate pieces. The system is validated on synthetic surfaces that simulate the most critical noise sources and on real data obtained from the installation of the sensor in an actual steel mill. In the comparison with conventional filtering methods, we achieve at least a 41% of improvement in the accuracy of the surface reconstruction. | es_ES |
dc.description.sponsorship | This work was partially supported by FEDER funds through MINECO project TIN2017-85827-P, RFCS EU funded project FLATBEND with Grant Number 800730, and Grant IT1284-19 of the university research group of excellence from the Basque Government. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/TIN2017-85827-P, RFCS EU | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | cubic Hermite interpolation | es_ES |
dc.subject | laser triangulation | es_ES |
dc.subject | metal sheet | es_ES |
dc.subject | flatness measurement | es_ES |
dc.subject | roller leveling | es_ES |
dc.subject | smooth surface reconstruction | es_ES |
dc.subject | shape measurement system | es_ES |
dc.title | Optical Dual Laser Based Sensor Denoising for OnlineMetal Sheet Flatness Measurement Using Hermite Interpolation | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2020-09-25T13:32:21Z | |
dc.rights.holder | 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1424-8220/20/18/5441 | es_ES |
dc.identifier.doi | 10.3390/s20185441 | |
dc.departamentoes | Ciencia de la computación e inteligencia artificial | |
dc.departamentoeu | Konputazio zientziak eta adimen artifiziala |
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Except where otherwise noted, this item's license is described as 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).