On the way to solve lighting problems in underwater imaging

A major obstacle to processing images of the ocean floor comes from the absorption and scattering effects of the light in the aquatic environment. Due to the absorption of the natural light, underwater vehicles often require artificial light sources attached to them to provide the adequate illuminat...

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Detalhes bibliográficos
Autores: García Campos, Rafael, Nicosevici, Tudor, Cufí i Solé, Xavier
Tipo de documento: artigo
Data de publicação:2002
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/2343
Acesso em linha:http://hdl.handle.net/10256/2343
Access Level:Acceso aberto
Palavra-chave:Imatges -- Processament
Imatge, Tècniques d'
Image processing
Imaging systems
Computer vision
Visió per ordinador
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spelling On the way to solve lighting problems in underwater imagingGarcía Campos, RafaelNicosevici, TudorCufí i Solé, XavierImatges -- ProcessamentImatge, Tècniques d'Image processingImaging systemsComputer visionVisió per ordinadorA major obstacle to processing images of the ocean floor comes from the absorption and scattering effects of the light in the aquatic environment. Due to the absorption of the natural light, underwater vehicles often require artificial light sources attached to them to provide the adequate illumination. Unfortunately, these flashlights tend to illuminate the scene in a nonuniform fashion, and, as the vehicle moves, induce shadows in the scene. For this reason, the first step towards application of standard computer vision techniques to underwater imaging requires dealing first with these lighting problems. This paper analyses and compares existing methodologies to deal with low-contrast, nonuniform illumination in underwater image sequences. The reviewed techniques include: (i) study of the illumination-reflectance model, (ii) local histogram equalization, (iii) homomorphic filtering, and, (iv) subtraction of the illumination field. Several experiments on real data have been conducted to compare the different approachesIEEE2002info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10256/2343http://hdl.handle.net/10256/2343© OCEANS '02 MTS/IEEE, 2002, vol. 2, p. 1018-1024Articles publicats (D-ATC)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1109/OCEANS.2002.1192107info:eu-repo/semantics/altIdentifier/isbn/0-7803-7534-3Tots els drets reservatsinfo:eu-repo/semantics/openAccessoai:recercat.cat:10256/23432026-05-29T05:05:01Z
dc.title.none.fl_str_mv On the way to solve lighting problems in underwater imaging
title On the way to solve lighting problems in underwater imaging
spellingShingle On the way to solve lighting problems in underwater imaging
García Campos, Rafael
Imatges -- Processament
Imatge, Tècniques d'
Image processing
Imaging systems
Computer vision
Visió per ordinador
title_short On the way to solve lighting problems in underwater imaging
title_full On the way to solve lighting problems in underwater imaging
title_fullStr On the way to solve lighting problems in underwater imaging
title_full_unstemmed On the way to solve lighting problems in underwater imaging
title_sort On the way to solve lighting problems in underwater imaging
dc.creator.none.fl_str_mv García Campos, Rafael
Nicosevici, Tudor
Cufí i Solé, Xavier
author García Campos, Rafael
author_facet García Campos, Rafael
Nicosevici, Tudor
Cufí i Solé, Xavier
author_role author
author2 Nicosevici, Tudor
Cufí i Solé, Xavier
author2_role author
author
dc.subject.none.fl_str_mv Imatges -- Processament
Imatge, Tècniques d'
Image processing
Imaging systems
Computer vision
Visió per ordinador
topic Imatges -- Processament
Imatge, Tècniques d'
Image processing
Imaging systems
Computer vision
Visió per ordinador
description A major obstacle to processing images of the ocean floor comes from the absorption and scattering effects of the light in the aquatic environment. Due to the absorption of the natural light, underwater vehicles often require artificial light sources attached to them to provide the adequate illumination. Unfortunately, these flashlights tend to illuminate the scene in a nonuniform fashion, and, as the vehicle moves, induce shadows in the scene. For this reason, the first step towards application of standard computer vision techniques to underwater imaging requires dealing first with these lighting problems. This paper analyses and compares existing methodologies to deal with low-contrast, nonuniform illumination in underwater image sequences. The reviewed techniques include: (i) study of the illumination-reflectance model, (ii) local histogram equalization, (iii) homomorphic filtering, and, (iv) subtraction of the illumination field. Several experiments on real data have been conducted to compare the different approaches
publishDate 2002
dc.date.none.fl_str_mv 2002
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/2343
http://hdl.handle.net/10256/2343
url http://hdl.handle.net/10256/2343
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1109/OCEANS.2002.1192107
info:eu-repo/semantics/altIdentifier/isbn/0-7803-7534-3
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv © OCEANS '02 MTS/IEEE, 2002, vol. 2, p. 1018-1024
Articles publicats (D-ATC)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.223283

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