On the way to solve lighting problems in underwater imaging
dc.contributor.author
dc.date.accessioned
2010-05-20T10:07:44Z
dc.date.available
2010-05-03T15:08:54Z
2010-05-20T10:07:44Z
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
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
dc.title
On the way to solve lighting problems in underwater imaging
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.identifier.doi