Geometric calibration of cameras applying least-squares method
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3120 |
Resumo: | To make artificial vision or computer vision possible, it is necessary to solve a series of problems of reasonable complexity. The first problem is the calibration of the cameras which will be used by the artificial vision system. The calibration process requires the, use of well-known patterns with known ℜ3 coordinates, once the basic problem consists of associating a point in ℜ3, tridimensional space, with another point in ℜ2, image plane or plane of camera retina, involving optical, electronic, electronic-numerical and mechanical phenomena that contribute with mistakes to the system. To minimize them it is necessary that the artificial vision system be redundant having more equations than variables. The least-squares method was applied to solve this system. A methodology appropriate to the acquisition of the necessary calibration patterns is also presented. |
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Geometric calibration of cameras applying least-squares methodCalibração geométrica de câmeras, aplicando o método dos mínimos quadradoscalibração de câmerasvisão por computadormínimos quadrados1.03.00.00-7 Ciência da ComputaçãoTo make artificial vision or computer vision possible, it is necessary to solve a series of problems of reasonable complexity. The first problem is the calibration of the cameras which will be used by the artificial vision system. The calibration process requires the, use of well-known patterns with known ℜ3 coordinates, once the basic problem consists of associating a point in ℜ3, tridimensional space, with another point in ℜ2, image plane or plane of camera retina, involving optical, electronic, electronic-numerical and mechanical phenomena that contribute with mistakes to the system. To minimize them it is necessary that the artificial vision system be redundant having more equations than variables. The least-squares method was applied to solve this system. A methodology appropriate to the acquisition of the necessary calibration patterns is also presented.Para tornar possível a visão artificial, ou visão computacional, é necessário resolver uma série de problemas de razoável complexidade. O primeiro problema a ser resolvido é a calibração das câmeras que serão utilizadas pelo sistema de visão artificial. No processo de calibração, devem-se utilizar padrões conhecidos e com coordenadas ℜ3 conhecidas, uma vez que o problema básico consiste em associar um ponto em ℜ3, espaço tridimensional, com um outro ponto em ℜ2, plano de imagem ou plano de retina da câmera, o que envolve fenômenos óticos, eletrônicos, eletrônico-numéricos e mecânicos, os quais contribuem com erros para o sistema. Para minimizá-los, é necessário que o sistema de visão artificial seja redundante, que se tenham mais equações do que incógnitas para resolvê-lo. Para resolver esse sistema, opta-se, neste trabalho, pelo método dos mínimos quadrados. Apresenta-se, também, uma metodologia para aquisição dos padrões necessários à calibração.Universidade Estadual De Maringá2008-05-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/312010.4025/actascitechnol.v20i0.3120Acta Scientiarum. Technology; Vol 20 (1998); 495-503Acta Scientiarum. Technology; v. 20 (1998); 495-5031806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3120/2327Polidorio, Airton MarcoBortolozzi, FlavioFigueiredo, Mauricioinfo:eu-repo/semantics/openAccess2024-05-17T13:02:57Zoai:periodicos.uem.br/ojs:article/3120Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:57Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Geometric calibration of cameras applying least-squares method Calibração geométrica de câmeras, aplicando o método dos mínimos quadrados |
title |
Geometric calibration of cameras applying least-squares method |
spellingShingle |
Geometric calibration of cameras applying least-squares method Polidorio, Airton Marco calibração de câmeras visão por computador mínimos quadrados 1.03.00.00-7 Ciência da Computação |
title_short |
Geometric calibration of cameras applying least-squares method |
title_full |
Geometric calibration of cameras applying least-squares method |
title_fullStr |
Geometric calibration of cameras applying least-squares method |
title_full_unstemmed |
Geometric calibration of cameras applying least-squares method |
title_sort |
Geometric calibration of cameras applying least-squares method |
author |
Polidorio, Airton Marco |
author_facet |
Polidorio, Airton Marco Bortolozzi, Flavio Figueiredo, Mauricio |
author_role |
author |
author2 |
Bortolozzi, Flavio Figueiredo, Mauricio |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Polidorio, Airton Marco Bortolozzi, Flavio Figueiredo, Mauricio |
dc.subject.por.fl_str_mv |
calibração de câmeras visão por computador mínimos quadrados 1.03.00.00-7 Ciência da Computação |
topic |
calibração de câmeras visão por computador mínimos quadrados 1.03.00.00-7 Ciência da Computação |
description |
To make artificial vision or computer vision possible, it is necessary to solve a series of problems of reasonable complexity. The first problem is the calibration of the cameras which will be used by the artificial vision system. The calibration process requires the, use of well-known patterns with known ℜ3 coordinates, once the basic problem consists of associating a point in ℜ3, tridimensional space, with another point in ℜ2, image plane or plane of camera retina, involving optical, electronic, electronic-numerical and mechanical phenomena that contribute with mistakes to the system. To minimize them it is necessary that the artificial vision system be redundant having more equations than variables. The least-squares method was applied to solve this system. A methodology appropriate to the acquisition of the necessary calibration patterns is also presented. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-05-13 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3120 10.4025/actascitechnol.v20i0.3120 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3120 |
identifier_str_mv |
10.4025/actascitechnol.v20i0.3120 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3120/2327 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 20 (1998); 495-503 Acta Scientiarum. Technology; v. 20 (1998); 495-503 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
_version_ |
1799315333082775552 |