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dc.contributor.authorHelmholz, Petra
dc.contributor.authorLichti, D.D.
dc.date.accessioned2021-04-23T00:54:52Z
dc.date.available2021-04-23T00:54:52Z
dc.date.issued2020
dc.identifier.citationHelmholz, P. and Lichti, D.D. 2020. Investigation of chromatic aberration and its influence on the processing of underwater imagery. Remote Sensing. 12 (18): Article No. 3002.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/83268
dc.identifier.doi10.3390/RS12183002
dc.description.abstract

The number of researchers utilising imagery for the 3D reconstruction of underwater natural (e.g., reefs) and man-made structures (e.g., shipwrecks) is increasing. Often, the same procedures and software solutions are used for processing the images as in-air without considering additional aberrations that can be caused by the change of the medium from air to water. For instance, several publications mention the presence of chromatic aberration (CA). The aim of this paper is to investigate CA effects in low-cost camera systems (several GoPro cameras) operated in an underwater environment. We found that underwater and in-air distortion profiles differed by more than 1000 times in terms of maximum displacement and in terms of curvature. Moreover, significant CA effects were found in the underwater profiles that did not exist in-air. Furthermore, the paper investigates the effect of adjustment constraints imposed on the underwater self-calibration and the reliability of the interior orientation parameters. The analysis of the precision shows that in-air RMS values are just due to random errors. In contrast, the underwater calibration RMS values are 3x-6x higher than the exterior orientation parameter (EOP) precision, so these values contain both random error and the systematic effects from the CA. The accuracy assessment shows significant differences.

dc.languageEnglish
dc.publisherMDPI
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LP180100284
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectScience & Technology
dc.subjectLife Sciences & Biomedicine
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectEnvironmental Sciences
dc.subjectGeosciences, Multidisciplinary
dc.subjectRemote Sensing
dc.subjectImaging Science & Photographic Technology
dc.subjectEnvironmental Sciences & Ecology
dc.subjectGeology
dc.subjectchromatic aberration
dc.subjectcamera calibration
dc.subjectunderwater
dc.subjectin-air comparison
dc.subjectadjustment constraint
dc.subjectprecision
dc.subjectaccuracy
dc.subjectCAMERA
dc.subjectCALIBRATION
dc.subjectQUALITY
dc.titleInvestigation of chromatic aberration and its influence on the processing of underwater imagery
dc.typeJournal Article
dcterms.source.volume12
dcterms.source.number18
dcterms.source.titleRemote Sensing
dc.date.updated2021-04-23T00:54:52Z
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidHelmholz, Petra [0000-0001-9894-3119]
curtin.contributor.researcheridHelmholz, Petra [K-6913-2013]
curtin.identifier.article-numberArticle No. 3002
dcterms.source.eissn2072-4292
curtin.contributor.scopusauthoridHelmholz, Petra [55439901000]


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