Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11554-014-0472-4 http://hdl.handle.net/11449/171721 |
Resumo: | This paper presents a methodology and all procedures used to validate it, which were executed in a physics laboratory under controlled and known conditions. The validation was based on the analyses of registered data in an image sequence and the measurements acquired by high precision sensors. This methodology intended to measure the velocity of a rigid object in linear motion with the use of an image sequence acquired by commercial digital video camera. The proposed methodology does not need a stereo pair of images to calculate the object position in the 3D space: it needs only images sequence acquired for one, only one, angle view (monocular vision). To do so, these objects need to be detected while in movement, which is conducted by the application of a segmentation technique based on the temporal average values of each pixel registered in N consecutive image frames. After detecting and framing these objects, specific points belonging to the object (pixels), on the plane image (2D coordinates or space image), are automatically chosen, which are then transformed into corresponding points in the space object (3D coordinates) by the application of collinearity equations or rational functions (proposed in this work). After obtaining the coordinates of these points in the space object that are registered in the sequence of images, the distance, in meters, covered by the object in a particular time interval may be measured and, consequently, its velocity can be calculated. The system is low cost, use only a computer (architecture Intel I3), and a webcam used to acquire the images (640 × 480, 30 fps). The complexity of the algorithm is linear, fact that allows the system to operate in real time. The results of the analyses are discussed and the advantages and disadvantages of the method are presented. |
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Repositório Institucional da UNESP |
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Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analysesCollinearity equationsGeometric transformationImage segmentationMonocular image sequenceMoving objectsRational polynomialsVelocity measurementThis paper presents a methodology and all procedures used to validate it, which were executed in a physics laboratory under controlled and known conditions. The validation was based on the analyses of registered data in an image sequence and the measurements acquired by high precision sensors. This methodology intended to measure the velocity of a rigid object in linear motion with the use of an image sequence acquired by commercial digital video camera. The proposed methodology does not need a stereo pair of images to calculate the object position in the 3D space: it needs only images sequence acquired for one, only one, angle view (monocular vision). To do so, these objects need to be detected while in movement, which is conducted by the application of a segmentation technique based on the temporal average values of each pixel registered in N consecutive image frames. After detecting and framing these objects, specific points belonging to the object (pixels), on the plane image (2D coordinates or space image), are automatically chosen, which are then transformed into corresponding points in the space object (3D coordinates) by the application of collinearity equations or rational functions (proposed in this work). After obtaining the coordinates of these points in the space object that are registered in the sequence of images, the distance, in meters, covered by the object in a particular time interval may be measured and, consequently, its velocity can be calculated. The system is low cost, use only a computer (architecture Intel I3), and a webcam used to acquire the images (640 × 480, 30 fps). The complexity of the algorithm is linear, fact that allows the system to operate in real time. The results of the analyses are discussed and the advantages and disadvantages of the method are presented.Department of Informatics UEMCartography Department UNESPCartography Department UNESPUniversidade Estadual de Maringá (UEM)Universidade Estadual Paulista (Unesp)Filitto, DaniloHasegawa, Júlio Kiyoshi [UNESP]Polidório, Airton MarcoMartins, Nardênio AlmeidaFlores, Franklin César2018-12-11T16:56:45Z2018-12-11T16:56:45Z2016-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article829-846application/pdfhttp://dx.doi.org/10.1007/s11554-014-0472-4Journal of Real-Time Image Processing, v. 11, n. 4, p. 829-846, 2016.1861-8200http://hdl.handle.net/11449/17172110.1007/s11554-014-0472-42-s2.0-849125573402-s2.0-84912557340.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Real-Time Image Processing0,322info:eu-repo/semantics/openAccess2024-06-18T15:01:12Zoai:repositorio.unesp.br:11449/171721Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:04:48.154845Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
title |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
spellingShingle |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses Filitto, Danilo Collinearity equations Geometric transformation Image segmentation Monocular image sequence Moving objects Rational polynomials Velocity measurement |
title_short |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
title_full |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
title_fullStr |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
title_full_unstemmed |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
title_sort |
Real-time velocity measurement to linear motion of a rigid object with monocular image sequence analyses |
author |
Filitto, Danilo |
author_facet |
Filitto, Danilo Hasegawa, Júlio Kiyoshi [UNESP] Polidório, Airton Marco Martins, Nardênio Almeida Flores, Franklin César |
author_role |
author |
author2 |
Hasegawa, Júlio Kiyoshi [UNESP] Polidório, Airton Marco Martins, Nardênio Almeida Flores, Franklin César |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Maringá (UEM) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Filitto, Danilo Hasegawa, Júlio Kiyoshi [UNESP] Polidório, Airton Marco Martins, Nardênio Almeida Flores, Franklin César |
dc.subject.por.fl_str_mv |
Collinearity equations Geometric transformation Image segmentation Monocular image sequence Moving objects Rational polynomials Velocity measurement |
topic |
Collinearity equations Geometric transformation Image segmentation Monocular image sequence Moving objects Rational polynomials Velocity measurement |
description |
This paper presents a methodology and all procedures used to validate it, which were executed in a physics laboratory under controlled and known conditions. The validation was based on the analyses of registered data in an image sequence and the measurements acquired by high precision sensors. This methodology intended to measure the velocity of a rigid object in linear motion with the use of an image sequence acquired by commercial digital video camera. The proposed methodology does not need a stereo pair of images to calculate the object position in the 3D space: it needs only images sequence acquired for one, only one, angle view (monocular vision). To do so, these objects need to be detected while in movement, which is conducted by the application of a segmentation technique based on the temporal average values of each pixel registered in N consecutive image frames. After detecting and framing these objects, specific points belonging to the object (pixels), on the plane image (2D coordinates or space image), are automatically chosen, which are then transformed into corresponding points in the space object (3D coordinates) by the application of collinearity equations or rational functions (proposed in this work). After obtaining the coordinates of these points in the space object that are registered in the sequence of images, the distance, in meters, covered by the object in a particular time interval may be measured and, consequently, its velocity can be calculated. The system is low cost, use only a computer (architecture Intel I3), and a webcam used to acquire the images (640 × 480, 30 fps). The complexity of the algorithm is linear, fact that allows the system to operate in real time. The results of the analyses are discussed and the advantages and disadvantages of the method are presented. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-01 2018-12-11T16:56:45Z 2018-12-11T16:56:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11554-014-0472-4 Journal of Real-Time Image Processing, v. 11, n. 4, p. 829-846, 2016. 1861-8200 http://hdl.handle.net/11449/171721 10.1007/s11554-014-0472-4 2-s2.0-84912557340 2-s2.0-84912557340.pdf |
url |
http://dx.doi.org/10.1007/s11554-014-0472-4 http://hdl.handle.net/11449/171721 |
identifier_str_mv |
Journal of Real-Time Image Processing, v. 11, n. 4, p. 829-846, 2016. 1861-8200 10.1007/s11554-014-0472-4 2-s2.0-84912557340 2-s2.0-84912557340.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Real-Time Image Processing 0,322 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
829-846 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128604980117504 |