On the way to solve lighting problems in underwater imaging

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dc.contributor.author García Campos, Rafael
dc.contributor.author Nicosevici, Tudor
dc.contributor.author Cufí i Solé, Xavier
dc.date.issued 2002
dc.identifier.citation Garcia, R., Nicosevici, T., i Cufi, X. (2002). On the way to solve lighting problems in underwater imaging. OCEANS '02 MTS/IEEE, 2, 1018-1024. Recuperat 20 maig 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1192107
dc.identifier.isbn 0-7803-7534-3
dc.identifier.uri http://hdl.handle.net/10256/2343
dc.description.abstract 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
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IEEE
dc.relation.isformatof Reproducció digital del document publicat a: http://dx.doi.org/10.1109/OCEANS.2002.1192107
dc.relation.ispartof © OCEANS '02 MTS/IEEE, 2002, vol. 2, p. 1018-1024
dc.relation.ispartofseries Articles publicats (D-ATC)
dc.rights Tots els drets reservats
dc.subject Imatges -- Processament
dc.subject Imatge, Tècniques d'
dc.subject Image processing
dc.subject Imaging systems
dc.subject Computer vision
dc.subject Visió per ordinador
dc.title On the way to solve lighting problems in underwater imaging
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1109/OCEANS.2002.1192107


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